2 $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.210 2003/10/16 03:47:28 momjian Exp $
5 <appendix id="release">
6 <title>Release Notes</title>
8 <sect1 id="release-devel">
9 <title>7.4 Development Branch</title>
12 Below is a subset of the changes that have gone into the
13 development branch of <productname>PostgreSQL</productname> since
14 version 7.3. For a complete list of changes, consult the CVS logs.
18 Developers: When you add a feature, mention it here. This avoids
19 lossiness when digging out the information from the CVS logs, and
20 furthermore it advertises your feature to external parties at the
21 earliest possible moment.
23 CDATA means the content is "SGML-free", so you can write without
24 worries about funny characters.
26 <literallayout><![CDATA[
29 <sect2><title>Overview</title>
30 <para> Major changes in this release:
33 <glossentry> <glossterm> IPv6</glossterm>
35 <glossdef><para> Full support for IPv6 connections and IPv6 address
36 data types</para></glossdef>
39 <glossentry><glossterm> SSL</glossterm>
41 <glosssdef><para> Major improvements in SSL performance and
42 reliability</para></glosssdef>
45 <glossentry><glossterm> Index Growth Prevention</glossterm>
47 <glossdef><para> Allow free space map to efficiently reuse empty index
48 pages, and other free space management improvements.</para></glossdef>
51 <glossentry><glossterm> Standards Compliance</glossterm>
53 <glossdef><para> Implement information schema Support for read-only
56 <para>Make cursors comply more closely with the SQL standard
61 <glossentry><glossterm> New Client/Server Communication
64 <glossdef><para> New protocol improves connection speed/reliability,
65 and adds error codes, status information, a binary protocol, error
66 reporting verbosity, and cleaner startup packets.</para></glossdef>
69 <glossentry><glossterm> Performance</glossterm>
71 <glossdef><para> IN/NOT IN subqueries now perform as efficiently as
74 <para> Improved GROUP BY processing by using hash buckets</para>
76 <para> New multi-key hash join capability</para>
78 <para> ANSI joins are now better optimized</para>
80 <para> Faster and more powerful regular expression code</para>
82 <para> Function-inlining for simple SQL functions</para></glossdef>
85 <glossentry><glossterm> Holdable Cursors</glossterm>
87 <glossdef><para> Allow cursors to exist outside transactions
91 <glossentry><glossterm> Threads</glossterm>
93 <glossdef><para> libpq and ecpg are now fully thread-safe with
94 --enable-thread-safety</para></glossdef>
97 <glossentry><glossterm> Contrib</glossterm>
99 <glossdef><para> New version of full text indexing (tsearch2)</para>
101 <para> New autovacuum tool</para>
103 <para> Array handling has been improved and moved into the main
104 server</para></glossdef>
106 </glosslist></para></sect2>
108 <sect2><title> Migration to version 7.4</title>
110 <para> A dump/restore using <application>pg_dump</application> is
111 required for those wishing to migrate data from any previous release.</para>
113 <para> Observe the following incompatibilities:
115 <listitem><para> The server-side autocommit setting was removed and reimplemented
116 in client applications and languages.</para></listitem>
117 <listitem><para> Error message wording has changed substantially in this release,
118 and error codes have been added.</para></listitem>
119 <listitem><para> ANSI joins may behave differently because they are now better optimized</para></listitem>
120 <listitem><para> A number of server variables have been renamed for clarity</para></listitem>
121 <listitem><para> MOVE/FETCH 0 now does nothing; return value of MOVE/FETCH 1/0
122 varies based on the current offset in the cursor</para></listitem>
123 <listitem><para> COPY now can process carriage-return/line-feed and carriage-return
124 terminated files. Literal carriage-returns and line-feeds are no
125 longer accepted as data values; use \r and \n instead.</para></listitem>
126 <listitem><para> Trailing spaces are now trimmed when converting
127 from <type>CHAR(n)</type> to
128 <type>VARCHAR(n)</type> / <type>TEXT</type></para></listitem>
129 <listitem><para> <function>FLOAT(p)</function> now measures 'p' in bits, not digits</para></listitem>
130 <listitem><para> Ambiguous date values now must match the ordering specified by DateStyle</para></listitem>
131 <listitem><para> The <function>oidrand()</function>, <function>oidsrand()</function>,
132 and <function>userfntest()</function> functions have been
133 removed.</para></listitem>
134 </itemizedlist></para></sect2>
136 <sect2> <title> Changes </title>
138 <sect3><title> Server Operation</title>
140 <listitem><para>Allow IPv6 server connections (Nigel Kukard, Johan Jordaan, Bruce, Tom, Kurt
141 Roeckx, Andrew Dunstan)</para></listitem>
142 <listitem><para>Fix SSL to handle errors cleanly (Nathan Mueller)</para></listitem>
143 <listitem><para>SSL protocol security and performance improvements (Sean Chittenden)</para></listitem>
144 <listitem><para>Print lock information when a deadlock is detected (Tom)</para></listitem>
145 <listitem><para>Update <filename>/tmp</filename> socket mod. times regularly to avoid their removal (Tom)</para></listitem>
146 <listitem><para>Enable PAM for MAC OS X (Aaron Hillegass)</para></listitem>
147 <listitem><para>Make btree indexes fully WAL-safe (Tom)</para></listitem>
148 <listitem><para>Allow btree index compaction and empty page reuse (Tom)</para></listitem>
149 <listitem><para>Fix inconsistent index lookups during split of first root page (Tom)</para></listitem>
150 <listitem><para>Improve free space map allocation logic (Tom)</para></listitem>
151 <listitem><para>Preserve free space information between postmaster restarts (Tom)</para></listitem>
152 <listitem><para>Set proper schema permissions in initdb (Peter)</para></listitem>
153 <listitem><para>Add start time to pg_stat_activity (Neil)</para></listitem>
154 <listitem><para>New code to detect corrupt disk pages; erase with zero_damaged_pages (Tom)</para></listitem>
155 <listitem><para>New client/server protocol: faster, no username length limit, allow
156 clean exit from COPY (Tom)</para></listitem>
157 <listitem><para>Add transaction status, tableid, columnid to backend protocol (Tom)</para></listitem>
158 <listitem><para>Add new binary I/O protocol (Tom)</para></listitem>
159 <listitem><para>Remove autocommit server setting; move to client applications (Tom)</para></listitem>
160 <listitem><para>New error message wording, error codes, and three levels of error detail (Tom)</para></listitem>
161 </itemizedlist></sect3>
163 <sect3><title>Performance</title>
167 <listitem><para>Add hashing for GROUP BY aggregates (Tom)</para></listitem>
168 <listitem><para>Allow nested loops to be smarter about multicolumn indexes (Tom)</para></listitem>
169 <listitem><para>Allow multi-key hash joins (Tom)</para></listitem>
170 <listitem><para>Improve constant folding (Tom)</para></listitem>
171 <listitem><para>Add ability to inline simple SQL functions (Tom)</para></listitem>
172 <listitem><para>Reduce memory usage for queries using complex functions (Tom)</para></listitem>
173 <listitem><para>Improve GEQO optimizer performance (Tom)</para></listitem>
174 <listitem><para>Allow IN/NOT IN to be handled via hash tables (Tom)</para></listitem>
175 <listitem><para>Improve NOT IN (subquery) performance (Tom)</para></listitem>
176 <listitem><para>Allow most IN subqueries to be processed as joins (Tom)</para></listitem>
177 <listitem><para>Allow the postmaster to preload libraries using preload_libraries (Joe)</para></listitem>
178 <listitem><para>Improve optimizer cost computations, particularly for subqueries (Tom)</para></listitem>
179 <listitem><para>Avoid sort when subquery ORDER BY matches upper query (Tom)</para></listitem>
180 <listitem><para>Assume WHERE a.x = b.y and b.y = 42 also means a.x = 42 (Tom)</para></listitem>
181 <listitem><para>Allow hash/merge joins on complex joins (Tom)</para></listitem>
182 <listitem><para>Allow hash joins for more data types (Tom)</para></listitem>
183 <listitem><para>Allow join optimization of ANSI joins, disable with join_collapse_limit (Tom)</para></listitem>
184 <listitem><para>Add from_collapse_limit to control conversion of subqueries to joins (Tom)</para></listitem>
185 <listitem><para>Use faster regular expression code from TCL (Henry Spencer, Tom)</para></listitem>
186 <listitem><para>Use bit-mapped relation sets in the optimizer (Tom)</para></listitem>
187 <listitem><para>Improve backend startup time (Tom)</para></listitem>
188 <listitem><para>Improve trigger/constraint performance (Stephan)</para></listitem>
189 <listitem><para>Improve speed of col IN (const, const, const, ...) (Tom)</para></listitem>
190 <listitem><para>Fix hash indexes which were broken in rare cases (Tom)</para></listitem>
191 <listitem><para>Improve hash index concurrency and speed (Tom)</para></listitem>
192 <listitem><para>Align shared buffers on 32-byte boundary for copy speed improvement</para></listitem>
193 </itemizedlist></sect3>
195 <sect3><title>Server Configuration</title>
198 <listitem><para>Rename server parameter server_min_messages to log_min_messages (Bruce)</para></listitem>
199 <listitem><para>Rename show_*_stats to log_*_stats (Bruce)</para></listitem>
200 <listitem><para>Rename show_source_port to log_source_port (Bruce)</para></listitem>
201 <listitem><para>Rename hostname_lookup to log_hostname (Bruce)</para></listitem>
202 <listitem><para>Add checkpoint_warning to warn of excessive checkpointing (Bruce)</para></listitem>
203 <listitem><para>New read-only server parameters for localization (Tom)</para></listitem>
204 <listitem><para>Change debug server log messages to output as DEBUG rather than LOG (Bruce)</para></listitem>
205 <listitem><para>Prevent server log variables from being turned off by non-super users (Bruce)</para></listitem>
206 <listitem><para>log_min_messages/client_min_messages now controls debug_* output (Bruce)</para></listitem>
207 <listitem><para>Add Rendezvous server support (Chris Campbell)</para></listitem>
208 <listitem><para>Add ability to print only slow statements using log_min_duration_statement
209 (Christopher)</para></listitem>
210 <listitem><para>Allow pg_hba.conf to accept netmasks in CIDR format (Andrew Dunstan)</para></listitem>
211 <listitem><para>New is_superuser read-only variable (Tom)</para></listitem>
212 <listitem><para>New server-side parameter log_error_verbosity to control error detail (Tom)</para></listitem>
213 <listitem><para>postgres --help-config now dumps server config variables (Aizaz Ahmed)</para></listitem>
214 <listitem><para>Make default shared_buffers 1000 and max_connections 100, if possible (Tom)</para></listitem>
215 <listitem><para>Add new columns in pg_settings: context, type, source , min_val, max_val (Joe)</para></listitem>
216 <listitem><para>New pg_hba.conf 'hostnossl' to prevent SSL connections (Jon Jensen)</para></listitem>
217 <listitem><para>Remove geqo_random_seed server parameter (Tom)</para></listitem>
218 </itemizedlist></sect3>
220 <sect3><title>Queries</title>
223 <listitem><para>New SQL-standard information schema (Peter)</para></listitem>
224 <listitem><para>Add read-only transactions (Peter)</para></listitem>
225 <listitem><para>Add server variable regex_flavor to control regular expression
226 processing (Tom)</para></listitem>
227 <listitem><para>Print key name and value in foreign-key violation messages (Dmitry Tkach)</para></listitem>
228 <listitem><para>Allow users to see their own queries in pg_stat_activity (Kevin Brown)</para></listitem>
229 <listitem><para>Fix subquery aggregates of upper query columns to match SQL spec. (Tom)</para></listitem>
230 <listitem><para>Add option to prevent auto-addition of tables referenced in query (Nigel J.
231 Andrews)</para></listitem>
232 <listitem><para>Allow UPDATE ... SET col = DEFAULT (Rod)</para></listitem>
233 <listitem><para>Allow expressions to be used in LIMIT/OFFSET (Tom)</para></listitem>
234 <listitem><para>Change EXECUTE INTO to CREATE TABLE AS EXECUTE (Peter)</para></listitem>
235 </itemizedlist></sect3>
237 <sect3><title>Object Manipulation</title>
240 <listitem><para>Make CREATE SEQUENCE grammar more SQL1999 standards compliant (Neil)</para></listitem>
241 <listitem><para>Add FOR EACH STATEMENT statement-level triggers (Neil)</para></listitem>
242 <listitem><para>Add DOMAIN CHECK constraints (Rod)</para></listitem>
243 <listitem><para>Add ALTER DOMAIN .. SET / DROP NOT NULL, SET / DROP DEFAULT, ADD / DROP
244 CONSTRAINT (Rod)</para></listitem>
245 <listitem><para>Fix several zero-column table bugs (Tom)</para></listitem>
246 <listitem><para>Have ALTER TABLE ... ADD PRIMARY KEY add NOT NULL constraint (Rod)</para></listitem>
247 <listitem><para>Add ALTER DOMAIN OWNER (Rod)</para></listitem>
248 <listitem><para>Add ALTER TABLE ... WITHOUT OIDS (Rod)</para></listitem>
249 <listitem><para>Add ALTER SEQUENCE to modify min/max/increment/cache/cycle values (Rod)</para></listitem>
250 <listitem><para>Add ALTER TABLE ... CLUSTER ON (Alvaro Herrera)</para></listitem>
251 <listitem><para>Improve DOMAIN automatic type casting (Rod, Tom)</para></listitem>
252 <listitem><para>Allow dollar signs in identifiers, except as first character (Tom)</para></listitem>
253 <listitem><para>Disallow dollar signs in operator names, so x=$1 works (Tom)</para></listitem>
254 <listitem><para>Allow SQL200X inheritance syntax LIKE <emphasis>subtable</emphasis>, INCLUDING DEFAULTS (Rod)</para></listitem>
255 <listitem><para>Add WITH GRANT OPTION clause to GRANT, per SQL spec (Peter)</para></listitem>
256 </itemizedlist></sect3>
258 <sect3><title>Utility Commands</title>
260 <listitem><para>Add ON COMMIT PRESERVE ROWS for temp tables (Gavin)</para></listitem>
261 <listitem><para>Allow cursors outside transactions using WITH HOLD (Neil)</para></listitem>
262 <listitem><para>Make MOVE/FETCH 0 actually move/fetch 0 (Bruce)</para></listitem>
263 <listitem><para>Cause FETCH 1 to return the current cursor row, or zero if at
264 beginning/end of cursor, per SQL spec (Bruce)</para></listitem>
265 <listitem><para>Have MOVE return 0 or 1 depending on cursor position (Bruce)</para></listitem>
266 <listitem><para>Properly handle SCROLL with cursors, or report an error (Neil)</para></listitem>
267 <listitem><para>Implement SQL92-compatible FIRST, LAST, ABSOLUTE n, RELATIVE n options
268 for FETCH and MOVE (Tom)</para></listitem>
269 <listitem><para>Allow EXPLAIN on DECLARE CURSOR (Tom)</para></listitem>
270 <listitem><para>Allow CLUSTER to use index marked as pre-clustered by default (Alvaro Herrera)</para></listitem>
271 <listitem><para>Allow CLUSTER to cluster all tables (Alvaro Herrera)</para></listitem>
272 <listitem><para>Prevent CLUSTER on partial indexes (Tom)</para></listitem>
273 <listitem><para>Allow \r and \r\n termination for COPY files (Bruce)</para></listitem>
274 <listitem><para>Disallow literal carriage return as a data value, backslash-carriage-return
275 and \r are still allowed (Bruce)</para></listitem>
276 <listitem><para>COPY changes (binary, \.)? (Tom)</para></listitem>
277 <listitem><para>Recover from COPY IN/OUT failure cleanly (Tom)</para></listitem>
278 <listitem><para>Prevent possible memory leaks in COPY (Tom)</para></listitem>
279 <listitem><para>Make TRUNCATE transaction-safe (Rod)</para></listitem>
280 <listitem><para>Multiple pg_dump fixes, including tar format and large objects</para></listitem>
281 <listitem><para>Allow pg_dump to dump specific schemas (Neil)</para></listitem>
282 <listitem><para>Allow pg_dump to preserve column storage characteristics (Christopher)</para></listitem>
283 <listitem><para>Allow pg_dump to preserve CLUSTER characteristics (Christopher)</para></listitem>
284 <listitem><para>Have pg_dumpall use GRANT/REVOKE to dump database-level permissions (Tom)</para></listitem>
285 <listitem><para>Allow pg_dumpall to support the -a, -s, -x options of pg_dump (Tom)</para></listitem>
286 <listitem><para>Prevent pg_dump from lowercasing identifiers specified on the command line (Tom)</para></listitem>
287 <listitem><para>Allow PREPARE/bind of utility commands like FETCH and EXPLAIN (Tom)</para></listitem>
288 <listitem><para>Add EXPLAIN EXECUTE (Neil)</para></listitem>
289 <listitem><para>Allow pg_get_constraintdef() to support UNIQUE, PRIMARY KEY and
290 CHECK constraints (Christopher)</para></listitem>
291 <listitem><para>Improve VACUUM performance on indexes by reducing WAL traffic (Tom)</para></listitem>
292 <listitem><para>Allow pg_ctl to better handle non-standard ports (Greg)</para></listitem>
293 <listitem><para>Functional indexes now support indexes on column expressions (Tom)</para></listitem>
294 <listitem><para>Syntax errors now reported as 'syntax error' rather than 'parse error' (Tom)</para></listitem>
295 <listitem><para>Have SHOW TRANSACTION_ISOLATION match input to SET TRANSACTION_ISOLATION (Tom)</para></listitem>
296 <listitem><para>Have COMMENT ON DATABASE on non-local database generate a warning (Rod)</para></listitem>
297 <listitem><para>Improve reliability of LISTEN/NOTIFY (Tom)</para></listitem>
298 <listitem><para>Allow REINDEX to reliably reindex non-shared system catalog indexes (Tom)</para></listitem>
299 <listitem><para>pg_dump --use-set-session-authorization and --no-reconnect now do nothing,
300 all dumps use SET SESSION AUTHORIZATION</para></listitem>
301 </itemizedlist></sect3>
304 <sect3><title>Data Types and Functions</title>
306 <listitem><para>New extra_float_digits server parameter to control float precision display
307 (Pedro Ferreira, Tom)</para></listitem>
308 <listitem><para>Allow +1300 as a numeric timezone specifier, for FJST (Tom)</para></listitem>
309 <listitem><para>Remove rarely used oidrand(), oidsrand(), and userfntest() functions (Neil)</para></listitem>
310 <listitem><para>Add md5() function to main server, already in /contrib/pgcrypto (Joe)</para></listitem>
311 <listitem><para>Increase date range of timestamp (John Cochran)</para></listitem>
312 <listitem><para>Change EXTRACT(EPOCH FROM timestamp) so timestamp without time zone
313 is assumed to be in local time, not GMT (Tom)</para></listitem>
314 <listitem><para>Trap division by zero in case the operating system doesn't prevent it (Tom)</para></listitem>
315 <listitem><para>Change the NUMERIC data type internally to base 10000 (Tom)</para></listitem>
316 <listitem><para>New hostmask() function (Greg Wickham)</para></listitem>
317 <listitem><para>Fixes for to_char() (Karel)</para></listitem>
318 <listitem><para>Allow functions that can take any argument data type and return
319 any data type, using ANYELEMENT and ANYARRAY (Joe)</para></listitem>
320 <listitem><para>Arrays may now be specified as ARRAY[1,2,3], ARRAY[['a','b'],['c','d']],
321 or ARRAY[ARRAY[ARRAY[2]]] (Joe)</para></listitem>
322 <listitem><para>Allow proper comparisons for arrays (Joe)</para></listitem>
323 <listitem><para>Allow array concatenation with '||' (Joe)</para></listitem>
324 <listitem><para>Allow indexes on array columns, and used in ORDER BY and DISTINCT (Joe)</para></listitem>
325 <listitem><para>Allow WHERE qualification 'expr <oper> ANY/SOME/ALL (array-expr)' (Joe)
326 <listitem><para>Allow polymorphic SQL functions (Joe)</para></listitem>
327 <listitem><para>New array functions array_append(), array_cat(), array_lower(),
328 array_prepend(), array_to_string(), array_upper(), string_to_array() (Joe)</para></listitem>
329 <listitem><para>Allow user defined aggregates to use polymorphic functions (Joe)</para></listitem>
330 <listitem><para>Allow polymorphic user defined aggregates (Joe)</para></listitem>
331 <listitem><para>Allow assignments to empty arrays (Joe)</para></listitem>
332 <listitem><para>Allow 60 in seconds fields of timestamp, time, interval input values (Tom)</para></listitem>
333 <listitem><para>Allow CIDR data type to be cast to text (Tom)</para></listitem>
334 <listitem><para>Allow the creation of special LIKE indexes for non-C locales (Peter)</para></listitem>
335 <listitem><para>Disallow invalid timezone names (Tom)</para></listitem>
336 <listitem><para>Trim trailing spaces when CHAR() data is cast to VARCHAR or TEXT (Tom)</para></listitem>
337 <listitem><para>Make FLOAT(p) measure the precision p in bits, not decimal digits (Tom)</para></listitem>
338 <listitem><para>Add IPv6 support to the inet and cidr data types (Michael Graff)</para></listitem>
339 <listitem><para>Add family() function to report whether address is IPv4 or IPv6 (Michael Graff)</para></listitem>
340 <listitem><para>Have SHOW DATESTYLE generate output similar to that used by SET DATESTYLE (Tom)</para></listitem>
341 <listitem><para>Change DATESTYLE to output its value in a more common format (Tom)</para></listitem>
342 <listitem><para>Make EXTRACT(TIMEZONE) and SET/SHOW TIMEZONE follow the SQL convention
343 for the sign of timezone offsets, ie, positive is east from UTC (Tom)</para></listitem>
344 <listitem><para>Fix date_trunc('quarter',...) (B?jthe Zolt?n)</para></listitem>
345 <listitem><para>Make initcap() more compatible with Oracle (Mike Nolan)</para></listitem>
346 <listitem><para>Allow only DateStyle field order for date values not in ISO format (Greg)</para></listitem>
347 <listitem><para>Add new DateStyle values MDY, DMY, and YMD, honor US and European for
348 backward compatibility (Tom)</para></listitem>
349 <listitem><para>'now' will no longer work as a column default, use now() (change required for
350 prepared statements) (Tom)</para></listitem>
351 <listitem><para>Assume NaN value to be larger than any other value in MIN()/MAX() (Tom)</para></listitem>
352 <listitem><para>Prevent interval from suppressing ':00' seconds display</para></listitem>
353 <listitem><para>New pg_get_triggerdef(prettyprint) and pg_constraint_is_visible() functions</para></listitem>
354 <listitem><para>Allow time to be specified as '040506' or '0405' (Tom)</para></listitem></oper></para></listitem>
355 </itemizedlist></sect3>
357 <sect3><title>Server-side Languages</title>
360 <listitem><para>Prevent PL/pgSQL crash when RETURN NEXT is used on a zero-row record var. (Tom)</para></listitem>
361 <listitem><para>Make PL/python's spi_execute interface handle NULLs properly (Andrew Bosma)</para></listitem>
362 <listitem><para>Allow PL/pgSQL to declare variables of composite types without %ROWTYPE (Tom)</para></listitem>
363 <listitem><para>Fix PL/python _quote() function to handle big integers (?)</para></listitem>
364 <listitem><para>Make PL/python an untrusted language, now called plpythonu (Kevin Jacobs, Tom)</para></listitem>
365 <listitem><para>Allow polymorphic PL/pgSQL functions (Tom, Joe)</para></listitem>
366 <listitem><para>Improved compiled function caching mechanism in PL/pgSQL with full
367 support for polymorphism (Joe)</para></listitem>
368 <listitem><para>Add new $0 parameter in PL/pgSQL representing the function's actual
369 return type (Joe)</para></listitem>
370 <listitem><para>Allow pltcl and plpython use the same trigger on multiple tables (Tom)</para></listitem>
371 <listitem><para>Fixed PL/Tcl's spi_prepare to accept full qualified type names in
372 the parameter type list (Jan)</para></listitem>
373 </itemizedlist></sect3>
375 <sect3><title>Psql</title>
378 <listitem><para>Add "\pset pager always" to always use pager (Greg)</para></listitem>
379 <listitem><para>Improve tab completion (Rod, Ross Reedstrom, Ian Barwick)</para></listitem>
380 <listitem><para>Reorder \? help into groupings (Harald Armin Massa, Bruce)</para></listitem>
381 <listitem><para>Add schema, cast, and conversion backslash commands (Christopher)</para></listitem>
382 <listitem><para>\encoding now changes based on client_encoding server variable (Tom)</para></listitem>
383 <listitem><para>Save edit history into readline history (Ross)</para></listitem>
384 <listitem><para>Improve \d display (Christopher)</para></listitem>
385 <listitem><para>Enhance HTML mode to be more standards-compliant (Greg)</para></listitem>
386 <listitem><para>New '\set AUTOCOMMIT off' capability (Tom)</para></listitem>
387 <listitem><para>New '\set VERBOSITY' to control error detail (Tom)</para></listitem>
388 <listitem><para>New %T prompt string to show transaction status (Tom)</para></listitem>
389 </itemizedlist></sect3>
391 <sect3><title>Libpq</title>
394 <listitem><para>Allow PQcmdTuples() to return row counts for MOVE and FETCH (Neil)</para></listitem>
395 <listitem><para>Add PQfreemem() for freeing memory on Win32, suggest for NOTIFY (Bruce)</para></listitem>
396 <listitem><para>Document service capability, and add sample file (Bruce)</para></listitem>
397 <listitem><para>Make PQsetdbLogin() have the same defaults as PQconnectdb() (Tom)</para></listitem>
398 <listitem><para>Allow libpq to cleanly fail when result sets are too large (Tom)</para></listitem>
399 <listitem><para>Improve performance of PGunescapeBytea() (Ben Lamb)</para></listitem>
400 <listitem><para>Allow thread-safe libpq with --enable-thread-safety (Lee Kindness, Philip Yarra)</para></listitem>
401 <listitem><para>Allow pqInternalNotice() to accept a format string and args instead of
402 just a preformatted message (Tom, Sean Chittenden)</para></listitem>
403 <listitem><para>Allow control SSL negotiation with sslmode values "disable", "allow",
404 "Prefer", and "require" (Jon Jensen)</para></listitem>
405 <listitem><para>Allow new error codes and levels of text (Tom)</para></listitem>
406 <listitem><para>Allow access to the underlying table and column of a query result (Tom)</para></listitem>
407 <listitem><para>Allow access to the current transaction status (Tom)</para></listitem>
408 <listitem><para>Add ability to pass binary data directly to the backend (Tom)</para></listitem>
409 <listitem><para>Add PQexecPrepared() and PQsendQueryPrepared() functions which
410 perform Bind/Execute of previously prepared statements (Tom)</para></listitem>
411 </itemizedlist></sect3>
413 <sect3><title>JDBC</title>
416 <listitem><para>Allow setNull on updateable resultsets</para></listitem>
417 <listitem><para>Allow executeBatch on a prepared statement (Barry)</para></listitem>
418 <listitem><para>Support SSL connections (Barry)</para></listitem>
419 <listitem><para>Handle schema names in result sets (Paul Sorenson)</para></listitem>
420 <listitem><para>Add refcursor support (Nic Ferrier)</para></listitem>
421 </itemizedlist></sect3>
423 <sect3><title>Miscellaneous Interfaces</title>
425 <listitem><para>Prevent possible memory leak or core dump during libpgtcl shutdown (Tom)</para></listitem>
426 <listitem><para>Add ecpg Informix compatibility (Michael)</para></listitem>
427 <listitem><para>Add ecpg DECIMAL type that is fixed length, for Informix (Michael)</para></listitem>
428 <listitem><para>Allow thread-safe ecpg with --enable-thread-safety (Lee Kindness, Bruce)</para></listitem>
429 <listitem><para>Move python client interface to http://www.pygresql.org (Marc)</para></listitem>
430 </itemizedlist></sect3>
432 <sect3><title>Source Code</title>
436 <listitem><para>Prevent need for separate platform geometry regression result files (Tom)</para></listitem>
437 <listitem><para>Improved PPC locking primitive (Reinhard Max)</para></listitem>
438 <listitem><para>Embed LD_LIBRARY_PATH used for build process into binaries (Billy)</para></listitem>
439 <listitem><para>New palloc0 to allocate and clear memory (Bruce)</para></listitem>
440 <listitem><para>Fix locking code for s390x CPU (64-bit) (Tom)</para></listitem>
441 <listitem><para>Allow OpenBSD to use local ident credentials (William Ahern)</para></listitem>
442 <listitem><para>Make query plan trees read-only to executor (Tom)</para></listitem>
443 <listitem><para>Add Darwin startup scripts (David Wheeler)</para></listitem>
444 <listitem><para>Allow libpq to compile with Borland C++ compiler (Lester Godwin, Karl Waclawek)</para></listitem>
445 <listitem><para>Use our own version of getopt_long() if needed (Peter)</para></listitem>
446 <listitem><para>Convert administration scripts to C (Peter)</para></listitem>
447 <listitem><para>Bison >=1.85 is now required for grammar changes</para></listitem>
448 <listitem><para>Merge documentation into one book (Peter)</para></listitem>
449 <listitem><para>Add Win32 compatibility functions (Bruce)</para></listitem>
450 <listitem><para>Allow client interfaces to compile under MinGW/Win32 (Bruce)</para></listitem>
451 <listitem><para>New ereport() function for error reporting (Tom)</para></listitem>
452 <listitem><para>Support Intel Linux compiler (Peter)</para></listitem>
453 <listitem><para>Improve Linux startup scripts (Slawomir Sudnik, Darko Prenosil)</para></listitem>
454 <listitem><para>Add support for AMD Opteron and Itanium (Jeffrey W. Baker, Bruce)</para></listitem>
455 <listitem><para>Remove configure --enable-recode</para></listitem>
456 <listitem><para>Generate a compile error if spinlock code is not found (Bruce)</para></listitem>
457 </itemizedlist></sect3>
459 <sect3><title>Contrib</title>
462 <listitem><para>Change dbmirror license to BSD</para></listitem>
463 <listitem><para>Improve earthdistance (Bruno Wolff III)</para></listitem>
464 <listitem><para>Portability improvements to pgcrypto (Marko Kreen)</para></listitem>
465 <listitem><para>Prevent xml crash (John Gray, Michael Richards)</para></listitem>
466 <listitem><para>Update oracle</para></listitem>
467 <listitem><para>Update mysql</para></listitem>
468 <listitem><para>Update cube (Bruno Wolff III)</para></listitem>
469 <listitem><para>Update earthdistance to use cube (Bruno Wolff III)</para></listitem>
470 <listitem><para>Update btree_gist (Oleg)</para></listitem>
471 <listitem><para>New tsearch2 full-text search module (Oleg, Teodor)</para></listitem>
472 <listitem><para>Add hashed based crosstab function to tablefuncs (Joe)</para></listitem>
473 <listitem><para>Add serial column to order connectby() siblings in tablefuncs (Nabil Sayegh,Joe)</para></listitem>
474 <listitem><para>Add named persistent connections to dblink (Shridhar Daithanka)</para></listitem>
475 <listitem><para>New pg_autovacuum allows automatic VACUUM (Matthew T. O'Connor)</para></listitem>
476 <listitem><para>Allow pgbench to honor PGHOST, PGPORT, PGUSER env. variables (Tatsuo)</para></listitem>
477 <listitem><para>Improve intarray (Teodor Sigaev)</para></listitem>
478 <listitem><para>Improve pgstattuple (Rod)</para></listitem>
479 <listitem><para>Fix bug in metaphone() in fuzzystrmatch</para></listitem>
480 <listitem><para>Improve adddepend (Rod)</para></listitem>
481 <listitem><para>Update spi/timetravel (B?jthe Zolt?n)</para></listitem>
482 <listitem><para>Fix dbase -s option and improve non-ASCII handling (Thomas Behr,M?rcio Smiderle)</para></listitem>
483 <listitem><para>Remove array module because features now included by default (Joe)</para></listitem>
484 </itemizedlist></sect3>
486 <sect3> <title> Other Uncategorized</title>
488 <listitem><para><function>EXTRACT(TIMEZONE)</function> and <command>SET/SHOW
489 TIMEZONE </command> now follow SQL sign convention
490 (positive = east of UTC)</para></listitem>
491 <listitem><para><command>DATESTYLE</command> can now be set to DMY, YMD, or MDY to specify input field order</para></listitem>
492 <listitem><para>Input date order must now be YYYY-MM-DD (with 4-digit
493 year) or match <envar>DATESTYLE</envar></para></listitem>
494 <listitem><para>Output of <command>SHOW DATESTYLE</command> is now in the same
495 format accepted by <command>SET DATESTYLE</command></para></listitem>
496 <listitem><para>PL/Python is now an untrusted language, and is renamed
497 to <function>plpythonu</function></para></listitem>
498 <listitem><para>Dollar sign ($) is no longer allowed in operator names</para></listitem>
499 <listitem><para>Dollar sign ($) can be a non-first character in identifiers</para></listitem>
500 <listitem><para>Precision in <function> FLOAT(p)</function> is now interpreted as bits, not decimal digits</para></listitem>
501 <listitem><para>Functional indexes have been generalized into expressional indexes</para></listitem>
502 <listitem><para><function>CHAR(n)</function> to <function>TEXT</function> conversion automatically strips trailing blanks</para></listitem>
503 <listitem><para>Pattern matching operations can use indexes regardless of locale</para></listitem>
504 <listitem><para>New frontend/backend protocol supports many long-requested features</para></listitem>
505 <listitem><para><command>SET AUTOCOMMIT TO OFF</command> is no longer
506 supported; psql has an <envar>AUTOCOMMIT</envar> variable</para></listitem>
507 <listitem><para>Reimplementation of NUMERIC datatype for more speed</para></listitem>
508 <listitem><para>New regular expression package, many more regexp features (most of Perl5)</para></listitem>
509 <listitem><para>Can now do <command> EXPLAIN</command> ... <command>EXECUTE</command> to see plan used for a prepared query</para></listitem>
510 <listitem><para>Explicit <command>JOIN</command>s no longer constrain query
511 plan, unless <command>JOIN_COLLAPSE_LIMIT = 1</command></para></listitem>
512 <listitem><para>Performance of <command>foo IN (SELECT ...)</command> queries has been considerably improved</para></listitem>
513 <listitem><para><command>FETCH 0</command> now re-fetches cursor's current row, per SQL spec</para></listitem>
514 <listitem><para>Revised executor state representation; plan trees are read-only to executor now</para></listitem>
515 <listitem><para>Information schema</para></listitem>
516 <listitem><para>Domains now support <command>CHECK</command> constraints</para></listitem>
517 <listitem><para><application>psql</application> backslash commands for listing conversions, casts, and schemas</para></listitem>
518 <listitem><para><command>TRUNCATE TABLE</command> is transaction-safe</para></listitem>
519 <listitem><para><command>CLUSTER</command> can re-cluster a previously clustered table, or all such tables</para></listitem>
520 <listitem><para>Statement-level triggers</para></listitem>
521 <listitem><para>System can use either hash- or sort-based strategy for grouped aggregation</para></listitem>
522 <listitem><para><command>ON COMMIT</command> options for temp tables</para></listitem>
523 <listitem><para>extra_float_digits option allows <application>pg_dump</application> to dump float data accurately</para></listitem>
524 <listitem><para>Long options for <application>psql</application> and
525 <application>pg_dump</application> are now available on all platforms</para></listitem>
526 <listitem><para>Read-only transactions</para></listitem>
527 <listitem><para>Object owners can allow grantees to grant the
528 privilege to others (grant option)</para></listitem>
530 <listitem><para> Added <filename>contrib</filename> module for
531 <application> pg_autovacuum </application> which monitors inserts and
532 deletes, and does <command>ANALYZE</command> or <command> VACUUM
533 ANALYZE </command> when quantities exceed specified
534 thresholds.</para></listitem>
536 </itemizedlist></sect3>
543 <sect1 id="release-7-3-4">
544 <title>Release 7.3.4</title>
547 <title>Release date</title>
548 <simpara>2003-07-24</simpara>
552 This has a variety of fixes from 7.3.3.
557 <title>Migration to version 7.3.4</title>
560 A dump/restore is <emphasis>not</emphasis> required for those
566 <title>Changes</title>
569 <listitem><para>Repair breakage in timestamp-to-date conversion for dates before 2000</para></listitem>
570 <listitem><para>Prevent rare possibility of server startup failure (Tom)</para></listitem>
571 <listitem><para>Fix bugs in interval-to-time conversion (Tom)</para></listitem>
572 <listitem><para>Add constraint names in a few places in pg_dump (Rod)</para></listitem>
573 <listitem><para>Improve performance of functions with many parameters (Tom)</para></listitem>
574 <listitem><para>Fix to_ascii() buffer overruns (Tom)</para></listitem>
575 <listitem><para>Prevent restore of database comments from throwing an error (Tom)</para></listitem>
576 <listitem><para>Work around buggy strxfrm() present in some Solaris releases (Tom)</para></listitem>
577 <listitem><para>Properly escape jdbc setObject() strings to improve security (Barry)</para></listitem>
583 <sect1 id="release-7-3-3">
584 <title>Release 7.3.3</title>
587 <title>Release date</title>
588 <simpara>2003-05-22</simpara>
592 This release contains of variety of fixes for version 7.3.2.
596 <title>Migration to version 7.3.3</title>
599 A dump/restore is <emphasis>not</emphasis> required for those
600 running version 7.3.*.
605 <title>Changes</title>
608 <listitem><para>Repair sometimes-incorrect computation of StartUpID after a crash</para></listitem>
609 <listitem><para>Avoid slowness with lots of deferred triggers in one transaction (Stephan)</para></listitem>
610 <listitem><para>Don't lock referenced row when <command>UPDATE</command> doesn't change foreign key's value (Jan)</para></listitem>
611 <listitem><para>Use <command>-fPIC</command> not <command>-fpic</command> on Sparc (Tom Callaway)</para></listitem>
612 <listitem><para>Repair lack of schema-awareness in contrib/reindexdb</para></listitem>
613 <listitem><para>Fix contrib/intarray error for zero-element result array (Teodor)</para></listitem>
614 <listitem><para>Ensure createuser script will exit on control-C (Oliver)</para></listitem>
615 <listitem><para>Fix errors when the type of a dropped column has itself been dropped</para></listitem>
616 <listitem><para><command>CHECKPOINT</command> does not cause database panic on failure in noncritical steps</para></listitem>
617 <listitem><para>Accept 60 in seconds fields of timestamp, time, interval input values</para></listitem>
618 <listitem><para>Issue notice, not error, if <type>TIMESTAMP</type>,
619 <type> TIME</type>, or <type>INTERVAL</type> precision too large</para></listitem>
620 <listitem><para>Fix <function>abstime-to-time</function> cast function (fix is
621 not applied unless you <application>initdb</application>)</para></listitem>
622 <listitem><para>Fix <application>pg_proc</application> entry for
623 <type> <type>timestampt_izone</type> (fix is not applied unless you
624 <application>initdb</application>)</para></listitem>
625 <listitem><para>Make <function>EXTRACT(EPOCH FROM timestamp without time zone)</function> treat input as local time</para></listitem>
626 <listitem><para><command>'now'::timestamptz</command> gave wrong answer if timezone changed earlier in transaction</para></listitem>
627 <listitem><para><envar>HAVE_INT64_TIMESTAMP</envar> code for time with timezone overwrote its input</para></listitem>
628 <listitem><para>Accept <command>GLOBAL TEMP/TEMPORARY</command> as a
629 synonym for <command>TEMPORARY</command></para></listitem>
630 <listitem><para>Avoid improper schema-permissions-check failure in foreign-key triggers</para></listitem>
631 <listitem><para>Fix bugs in foreign-key triggers for <command>SET DEFAULT</command> action</para></listitem>
632 <listitem><para>Fix incorrect time-qual check in row fetch for
633 <command>UPDATE</command> and <command>DELETE</command> triggers</para></listitem>
634 <listitem><para>Foreign-key clauses were parsed but ignored in
635 <command>ALTER TABLE ADD COLUMN</command></para></listitem>
636 <listitem><para>Fix createlang script breakage for case where handler function already exists</para></listitem>
637 <listitem><para>Fix misbehavior on zero-column tables in <application>pg_dump</application>, COPY, ANALYZE, other places</para></listitem>
638 <listitem><para>Fix misbehavior of <function>func_error()</function> on type names containing '%'</para></listitem>
639 <listitem><para>Fix misbehavior of <function>replace()</function> on strings containing '%'</para></listitem>
640 <listitem><para>Regular-expression patterns containing certain multibyte characters failed</para></listitem>
641 <listitem><para>Account correctly for <command>NULL</command>s in more cases in join size estimation</para></listitem>
642 <listitem><para>Avoid conflict with system definition of <function>isblank()</function> function or macro</para></listitem>
643 <listitem><para>Fix failure to convert large code point values in EUC_TW conversions (Tatsuo)</para></listitem>
644 <listitem><para>Fix error recovery for <function>SSL_read</function>/<function>SSL_write</function> calls</para></listitem>
645 <listitem><para>Don't do early constant-folding of type coercion expressions</para></listitem>
646 <listitem><para>Validate page header fields immediately after reading in any page</para></listitem>
647 <listitem><para>Repair incorrect check for ungrouped variables in unnamed joins</para></listitem>
648 <listitem><para>Fix buffer overrun in <function>to_ascii</function> (Guido Notari)</para></listitem>
649 <listitem><para>contrib/ltree fixes (Teodor)</para></listitem>
650 <listitem><para>Fix core dump in deadlock detection on machines where char is unsigned</para></listitem>
651 <listitem><para>Avoid running out of buffers in many-way indexscan (bug introduced in 7.3)</para></listitem>
652 <listitem><para>Fix planner's selectivity estimation functions to handle domains properly</para></listitem>
653 <listitem><para>Fix <application>dbmirror</application> memory-allocation bug (Steven Singer)</para></listitem>
654 <listitem><para>Prevent infinite loop in <function>ln(numeric)</function> due to roundoff error</para></listitem>
655 <listitem><para><command>GROUP BY</command> got confused if there were multiple equal GROUP BY items</para></listitem>
656 <listitem><para>Fix bad plan when inherited <command>UPDATE</command>/<command>DELETE</command> references another inherited table</para></listitem>
657 <listitem><para>Prevent clustering on incomplete (partial or non-NULL-storing) indexes</para></listitem>
658 <listitem><para>Service shutdown request at proper time if it arrives while still starting up</para></listitem>
659 <listitem><para>Fix left-links in temporary indexes (could make backwards scans miss entries)</para></listitem>
660 <listitem><para>Fix incorrect handling of client_encoding setting in postgresql.conf (Tatsuo)</para></listitem>
661 <listitem><para>Fix failure to respond to <command>pg_ctl stop -m fast</command> after Async_NotifyHandler runs</para></listitem>
662 <listitem><para>Fix SPI for case where rule contains multiple statements of the same type</para></listitem>
663 <listitem><para>Fix problem with checking for wrong type of access permission in rule query</para></listitem>
664 <listitem><para>Fix problem with <command>EXCEPT</command> in <command>CREATE RULE</command></para></listitem>
665 <listitem><para>Prevent problem with dropping temp tables having serial columns</para></listitem>
666 <listitem><para>Fix replace_vars_with_subplan_refs failure in complex views</para></listitem>
667 <listitem><para>Fix regexp slowness in single-byte encodings (Tatsuo)</para></listitem>
668 <listitem><para>Allow qualified type names in <command>CREATE CAST</command>
669 and <command> DROP CAST</command></para></listitem>
670 <listitem><para>Accept <function>SETOF type[]</function>, which formerly had to
671 be written <function>SETOF _type</function></para></listitem>
672 <listitem><para>Fix <application>pg_dump</application> core dump in some cases with procedural languages</para></listitem>
673 <listitem><para>Force ISO datestyle in <application>pg_dump</application> output, for portability (Oliver)</para></listitem>
674 <listitem><para><application>pg_dump</application> failed to handle error return
675 from <function>lo_read</function> (Oleg Drokin)</para></listitem>
676 <listitem><para><application>pg_dumpall</application> failed with groups having no members (Nick Eskelinen)</para></listitem>
677 <listitem><para><application>pg_dumpall</application> failed to recognize --globals-only switch</para></listitem>
678 <listitem><para>pg_restore failed to restore blobs if -X disable-triggers is specified</para></listitem>
679 <listitem><para>Repair intrafunction memory leak in plpgsql</para></listitem>
680 <listitem><para>pltcl's <command>elog</command> command dumped core if given wrong parameters (Ian Harding)</para></listitem>
681 <listitem><para>plpython used wrong value of <envar>atttypmod</envar> (Brad McLean)</para></listitem>
682 <listitem><para>Fix improper quoting of boolean values in Python interface (D'Arcy)</para></listitem>
683 <listitem><para>Added <function>addDataType()</function> method to PGConnection interface for JDBC</para></listitem>
684 <listitem><para>Fixed various problems with updateable ResultSets for JDBC (Shawn Green)</para></listitem>
685 <listitem><para>Fixed various problems with DatabaseMetaData for JDBC (Kris Jurka, Peter Royal)</para></listitem>
686 <listitem><para>Fixed problem with parsing table ACLs in JDBC</para></listitem>
687 <listitem><para>Better error message for character set conversion problems in JDBC</para></listitem>
693 <sect1 id="release-7-3-2">
694 <title>Release 7.3.2</title>
697 <title>Release date</title>
698 <simpara>2003-02-04</simpara>
702 This release contains a variety of fixes for version 7.3.1.
707 <title>Migration to version 7.3.2</title>
710 A dump/restore is <emphasis>not</emphasis> required for those
711 running version 7.3.*.
716 <title>Changes</title>
719 <listitem><para>Restore creation of OID column in CREATE TABLE AS / SELECT INTO</para></listitem>
720 <listitem><para>Fix <application/pg_dump/ core dump when dumping views having comments</para></listitem>
721 <listitem><para>Dump DEFERRABLE/INITIALLY DEFERRED constraints properly</para></listitem>
722 <listitem><para>Fix UPDATE when child table's column numbering differs from parent</para></listitem>
723 <listitem><para>Increase default value of max_fsm_relations</para></listitem>
724 <listitem><para>Fix problem when fetching backwards in a cursor for a single-row query</para></listitem>
725 <listitem><para>Make backward fetch work properly with cursor on SELECT DISTINCT query</para></listitem>
726 <listitem><para>Fix problems with loading <application/pg_dump/ files containing contrib/lo usage</para></listitem>
727 <listitem><para>Fix problem with all-numeric user names</para></listitem>
728 <listitem><para>Fix possible memory leak and core dump during disconnect in libpgtcl</para></listitem>
729 <listitem><para>Make plpython's spi_execute command handle nulls properly (Andrew Bosma)</para></listitem>
730 <listitem><para>Adjust plpython error reporting so that its regression test passes again</para></listitem>
731 <listitem><para>Work with bison 1.875</para></listitem>
732 <listitem><para>Handle mixed-case names properly in plpgsql's %type (Neil)</para></listitem>
733 <listitem><para>Fix core dump in pltcl when executing a query rewritten by a rule</para></listitem>
734 <listitem><para>Repair array subscript overruns (per report from Yichen Xie)</para></listitem>
735 <listitem><para>Reduce MAX_TIME_PRECISION from 13 to 10 in floating-point case</para></listitem>
736 <listitem><para>Correctly case-fold variable names in per-database and per-user settings</para></listitem>
737 <listitem><para>Fix coredump in plpgsql's RETURN NEXT when SELECT into record returns no rows</para></listitem>
738 <listitem><para>Fix outdated use of pg_type.typprtlen in python client interface</para></listitem>
739 <listitem><para>Correctly handle fractional seconds in timestamps in JDBC driver</para></listitem>
740 <listitem><para>Improve performance of getImportedKeys() in JDBC</para></listitem>
741 <listitem><para>Make shared-library symlinks work standardly on HPUX (Giles)</para></listitem>
742 <listitem><para>Repair inconsistent rounding behavior for timestamp, time, interval</para></listitem>
743 <listitem><para>SSL negotiation fixes (Nathan Mueller)</para></listitem>
744 <listitem><para>Make libpq's ~/.pgpass feature work when connecting with PQconnectDB</para></listitem>
745 <listitem><para>Update my2pg, ora2pg</para></listitem>
746 <listitem><para>Translation updates</para></listitem>
747 <listitem><para>Add casts between types lo and oid in contrib/lo</para></listitem>
748 <listitem><para>fastpath code now checks for privilege to call function</para></listitem>
754 <sect1 id="release-7-3-1">
755 <title>Release 7.3.1</title>
758 <title>Release date</title>
759 <simpara>2002-12-18</simpara>
763 This release contains a variety of fixes for version 7.3.
768 <title>Migration to version 7.3.1</title>
771 A dump/restore is <emphasis>not</emphasis> required for those
772 running version 7.3. However, it should be noted that the main
773 PostgreSQL interface library, libpq, has a new major version
774 number for this release, which may require recompilation of client
775 code in certain cases.
780 <title>Changes</title>
783 <listitem><para>Fix a core dump of COPY TO when client/server encodings don't match (Tom)</para></listitem>
784 <listitem><para>Allow <application/pg_dump/ to work with pre-7.2 servers (Philip)</para></listitem>
785 <listitem><para>contrib/adddepend fixes (Tom)</para></listitem>
786 <listitem><para>Fix problem with deletion of per-user/per-database config settings (Tom)</para></listitem>
787 <listitem><para>contrib/vacuumlo fix (Tom)</para></listitem>
788 <listitem><para>Allow 'password' encryption even when pg_shadow contains MD5 passwords (Bruce)</para></listitem>
789 <listitem><para>contrib/dbmirror fix (Steven Singer)</para></listitem>
790 <listitem><para>Optimizer fixes (Tom)</para></listitem>
791 <listitem><para>contrib/tsearch fixes (Teodor Sigaev, Magnus)</para></listitem>
792 <listitem><para>Allow locale names to be mixed case (Nicolai Tufar)</para></listitem>
793 <listitem><para>Increment libpq library's major version number (Bruce)</para></listitem>
794 <listitem><para>pg_hba.conf error reporting fixes (Bruce, Neil)</para></listitem>
795 <listitem><para>Add SCO Openserver 5.0.4 as a supported platform (Bruce)</para></listitem>
796 <listitem><para>Prevent EXPLAIN from crashing server (Tom)</para></listitem>
797 <listitem><para>SSL fixes (Nathan Mueller)</para></listitem>
798 <listitem><para>Prevent composite column creation via ALTER TABLE (Tom)</para></listitem>
804 <sect1 id="release-7-3">
805 <title>Release 7.3</title>
808 <title>Release date</title>
809 <simpara>2002-11-27</simpara>
813 <title>Overview</title>
816 Major changes in this release:
823 Schemas allow users to create objects in separate namespaces,
824 so two people or applications can have tables with the same
825 name. There is also a public schema for shared tables.
826 Table/index creation can be restricted by removing permissions
827 on the public schema.
833 <term>Drop Column</term>
836 PostgreSQL now supports the <literal>ALTER TABLE ... DROP
837 COLUMN</literal> functionality.
843 <term>Table Functions</term>
846 Functions returning multiple rows and/or multiple columns are
847 now much easier to use than before. You can call such a
848 <quote>table function</quote> in the <literal>SELECT</literal>
849 <literal>FROM</literal> clause, treating its output like a
850 table. Also, <application>PL/pgSQL</application> functions can
857 <term>Prepared Queries</term>
860 PostgreSQL now supports prepared queries, for improved
867 <term>Dependency Tracking</term>
870 PostgreSQL now records object dependencies, which allows
871 improvements in many areas. <command>DROP</command>
872 statements now take either <literal>CASCADE</> or
873 <literal>RESTRICT</> to control whether dependent objects are
880 <term>Privileges</term>
883 Functions and procedural languages now have privileges, and
884 functions can be defined to run with the privileges of their
891 <term>Internationalization</term>
894 Both multibyte and locale support are now always enabled.
903 A variety of logging options have been enhanced.
909 <term>Interfaces</term>
912 A large number of interfaces have been moved to <ulink
913 url="http://gborg.postgresql.org">http://gborg.postgresql.org</>
914 where they can be developed and released independently.
920 <term>Functions/Identifiers</term>
923 By default, functions can now take up to 32 parameters, and
924 identifiers can be up to 63 bytes long. Also, <literal>OPAQUE</>
925 is now deprecated: there are specific <quote>pseudo-datatypes</>
926 to represent each of the former meanings of <literal>OPAQUE</>
927 in function argument and result types.
937 <title>Migration to version 7.3</title>
940 A dump/restore using <application>pg_dump</> is required for those
941 wishing to migrate data from any previous release. If your
942 application examines the system catalogs, additional changes will
943 be required due to the introduction of schemas in 7.3; for more
944 information, see: <ulink
945 url="http://developer.postgresql.org/~momjian/upgrade_tips_7.3">
946 http://developer.postgresql.org/~momjian/upgrade_tips_7.3</>.
950 Observe the following incompatibilities:
955 Pre-6.3 clients are no longer supported.
961 <filename>pg_hba.conf</filename> now has a column for the user
962 name and additional features. Existing files need to be
969 Several <filename>postgresql.conf</filename> logging parameters
976 <literal>LIMIT #,#</literal> has been disabled; use
977 <literal>LIMIT # OFFSET #</literal>.
983 <command>INSERT</command> statements with column lists must
984 specify a value for each specified column. For example,
985 <literal>INSERT INTO tab (col1, col2) VALUES ('val1')</literal>
986 is now invalid. It's still allowed to supply fewer columns than
987 expected if the <command>INSERT</command> does not have a column list.
993 <type>serial</type> columns are no longer automatically
994 <literal>UNIQUE</>; thus, an index will not automatically be
1001 A <command>SET</command> command inside an aborted transaction
1008 <command>COPY</command> no longer considers missing trailing
1009 columns to be null. All columns need to be specified.
1010 (However, one may achieve a similar effect by specifying a
1011 column list in the <command>COPY</command> command.)
1017 The data type <type>timestamp</type> is now equivalent to
1018 <type>timestamp without time zone</type>, instead of
1019 <type>timestamp with time zone</type>.
1025 Pre-7.3 databases loaded into 7.3 will not have the new object
1026 dependencies for <type>serial</type> columns, unique
1027 constraints, and foreign keys. See the directory
1028 <filename>contrib/adddepend/</filename> for a detailed
1029 description and a script that will add such dependencies.
1035 An empty string (<literal>''</literal>) is no longer allowed as
1036 the input into an integer field. Formerly, it was silently
1047 <title>Changes</title>
1050 <title>Server Operation</title>
1052 <listitem><para>Add pg_locks view to show locks (Neil)</para></listitem>
1053 <listitem><para>Security fixes for password negotiation memory allocation (Neil)</para></listitem>
1054 <listitem><para>Remove support for version 0 FE/BE protocol (PostgreSQL 6.2 and earlier) (Tom)</para></listitem>
1055 <listitem><para>Reserve the last few backend slots for superusers, add parameter superuser_reserved_connections to control this (Nigel J. Andrews)</para></listitem>
1060 <title>Performance</title>
1062 <listitem><para>Improve startup by calling localtime() only once (Tom)</para></listitem>
1063 <listitem><para>Cache system catalog information in flat files for faster startup (Tom)</para></listitem>
1064 <listitem><para>Improve caching of index information (Tom)</para></listitem>
1065 <listitem><para>Optimizer improvements (Tom, Fernando Nasser)</para></listitem>
1066 <listitem><para>Catalog caches now store failed lookups (Tom)</para></listitem>
1067 <listitem><para>Hash function improvements (Neil)</para></listitem>
1068 <listitem><para>Improve performance of query tokenization and network handling (Peter)</para></listitem>
1069 <listitem><para>Speed improvement for large object restore (Mario Weilguni)</para></listitem>
1070 <listitem><para>Mark expired index entries on first lookup, saving later heap fetches (Tom)</para></listitem>
1071 <listitem><para>Avoid excessive NULL bitmap padding (Manfred Koizar)</para></listitem>
1072 <listitem><para>Add BSD-licensed qsort() for Solaris, for performance (Bruce)</para></listitem>
1073 <listitem><para>Reduce per-row overhead by four bytes (Manfred Koizar)</para></listitem>
1074 <listitem><para>Fix GEQO optimizer bug (Neil Conway)</para></listitem>
1075 <listitem><para>Make WITHOUT OID actually save four bytes per row (Manfred Koizar)</para></listitem>
1076 <listitem><para>Add default_statistics_target variable to specify ANALYZE buckets (Neil)</para></listitem>
1077 <listitem><para>Use local buffer cache for temporary tables so no WAL overhead (Tom)</para></listitem>
1078 <listitem><para>Improve free space map performance on large tables (Stephen Marshall, Tom)</para></listitem>
1079 <listitem><para>Improved WAL write concurrency (Tom)</para></listitem>
1084 <title>Privileges</title>
1086 <listitem><para>Add privileges on functions and procedural languages (Peter)</para></listitem>
1087 <listitem><para>Add OWNER to CREATE DATABASE so superusers can create databases on behalf of unprivileged users (Gavin Sherry, Tom)</para></listitem>
1088 <listitem><para>Add new object permission bits EXECUTE and USAGE (Tom)</para></listitem>
1089 <listitem><para>Add SET SESSION AUTHORIZATION DEFAULT and RESET SESSION AUTHORIZATION (Tom)</para></listitem>
1090 <listitem><para>Allow functions to be executed with the privilege of the function owner (Peter)</para></listitem>
1095 <title>Server Configuration</title>
1097 <listitem><para>Server log messages now tagged with LOG, not DEBUG (Bruce)</para></listitem>
1098 <listitem><para>Add user column to pg_hba.conf (Bruce)</para></listitem>
1099 <listitem><para>Have log_connections output two lines in log file (Tom)</para></listitem>
1100 <listitem><para>Remove debug_level from postgresql.conf, now server_min_messages (Bruce)</para></listitem>
1101 <listitem><para>New ALTER DATABASE/USER ... SET command for per-user/database initialization (Peter)</para></listitem>
1102 <listitem><para>New parameters server_min_messages and client_min_messages to control which messages are sent to the server logs or client applications (Bruce)</para></listitem>
1103 <listitem><para>Allow pg_hba.conf to specify lists of users/databases separated by commas, group names prepended with +, and file names prepended with @ (Bruce)</para></listitem>
1104 <listitem><para>Remove secondary password file capability and pg_password utility (Bruce)</para></listitem>
1105 <listitem><para>Add variable db_user_namespace for database-local user names (Bruce)</para></listitem>
1106 <listitem><para>SSL improvements (Bear Giles)</para></listitem>
1107 <listitem><para>Make encryption of stored passwords the default (Bruce)</para></listitem>
1108 <listitem><para>Allow pg_statistics to be reset by calling pg_stat_reset() (Christopher)</para></listitem>
1109 <listitem><para>Add log_duration parameter (Bruce)</para></listitem>
1110 <listitem><para>Rename debug_print_query to log_statement (Bruce)</para></listitem>
1111 <listitem><para>Rename show_query_stats to show_statement_stats (Bruce)</para></listitem>
1112 <listitem><para>Add param log_min_error_statement to print commands to logs on error (Gavin)</para></listitem>
1117 <title>Queries</title>
1119 <listitem><para>Make cursors insensitive, meaning their contents do not change (Tom)</para></listitem>
1120 <listitem><para>Disable LIMIT #,# syntax; now only LIMIT # OFFSET # supported (Bruce)</para></listitem>
1121 <listitem><para>Increase identifier length to 63 (Neil, Bruce)</para></listitem>
1122 <listitem><para>UNION fixes for merging >= 3 columns of different lengths (Tom)</para></listitem>
1123 <listitem><para>Add DEFAULT keyword to INSERT, e.g., INSERT ... (..., DEFAULT, ...) (Rod)</para></listitem>
1124 <listitem><para>Allow views to have default values using ALTER COLUMN ... SET DEFAULT (Neil)</para></listitem>
1125 <listitem><para>Fail on INSERTs with column lists that don't supply all column values, e.g., INSERT INTO tab (col1, col2) VALUES ('val1'); (Rod)</para></listitem>
1126 <listitem><para>Fix for join aliases (Tom)</para></listitem>
1127 <listitem><para>Fix for FULL OUTER JOINs (Tom)</para></listitem>
1128 <listitem><para>Improve reporting of invalid identifier and location (Tom, Gavin)</para></listitem>
1129 <listitem><para>Fix OPEN cursor(args) (Tom)</para></listitem>
1130 <listitem><para>Allow 'ctid' to be used in a view and currtid(viewname) (Hiroshi)</para></listitem>
1131 <listitem><para>Fix for CREATE TABLE AS with UNION (Tom)</para></listitem>
1132 <listitem><para>SQL99 syntax improvements (Thomas)</para></listitem>
1133 <listitem><para>Add statement_timeout variable to cancel queries (Bruce)</para></listitem>
1134 <listitem><para>Allow prepared queries with PREPARE/EXECUTE (Neil)</para></listitem>
1135 <listitem><para>Allow FOR UPDATE to appear after LIMIT/OFFSET (Bruce)</para></listitem>
1136 <listitem><para>Add variable autocommit (Tom, David Van Wie)</para></listitem>
1141 <title>Object Manipulation</title>
1143 <listitem><para>Make equals signs optional in CREATE DATABASE (Gavin Sherry)</para></listitem>
1144 <listitem><para>Make ALTER TABLE OWNER change index ownership too (Neil)</para></listitem>
1145 <listitem><para>New ALTER TABLE tabname ALTER COLUMN colname SET STORAGE controls TOAST storage, compression (John Gray)</para></listitem>
1146 <listitem><para>Add schema support, CREATE/DROP SCHEMA (Tom)</para></listitem>
1147 <listitem><para>Create schema for temporary tables (Tom)</para></listitem>
1148 <listitem><para>Add variable search_path for schema search (Tom)</para></listitem>
1149 <listitem><para>Add ALTER TABLE SET/DROP NOT NULL (Christopher)</para></listitem>
1150 <listitem><para>New CREATE FUNCTION volatility levels (Tom)</para></listitem>
1151 <listitem><para>Make rule names unique only per table (Tom)</para></listitem>
1152 <listitem><para>Add 'ON tablename' clause to DROP RULE and COMMENT ON RULE (Tom)</para></listitem>
1153 <listitem><para>Add ALTER TRIGGER RENAME (Joe)</para></listitem>
1154 <listitem><para>New current_schema() and current_schemas() inquiry functions (Tom)</para></listitem>
1155 <listitem><para>Allow functions to return multiple rows (table functions) (Joe)</para></listitem>
1156 <listitem><para>Make WITH optional in CREATE DATABASE, for consistency (Bruce)</para></listitem>
1157 <listitem><para>Add object dependency tracking (Rod, Tom)</para></listitem>
1158 <listitem><para>Add RESTRICT/CASCADE to DROP commands (Rod)</para></listitem>
1159 <listitem><para>Add ALTER TABLE DROP for non-CHECK CONSTRAINT (Rod)</para></listitem>
1160 <listitem><para>Autodestroy sequence on DROP of table with SERIAL (Rod)</para></listitem>
1161 <listitem><para>Prevent column dropping if column is used by foreign key (Rod)</para></listitem>
1162 <listitem><para>Automatically drop constraints/functions when object is dropped (Rod)</para></listitem>
1163 <listitem><para>Add CREATE/DROP OPERATOR CLASS (Bill Studenmund, Tom)</para></listitem>
1164 <listitem><para>Add ALTER TABLE DROP COLUMN (Christopher, Tom, Hiroshi)</para></listitem>
1165 <listitem><para>Prevent inherited columns from being removed or renamed (Alvaro Herrera)</para></listitem>
1166 <listitem><para>Fix foreign key constraints to not error on intermediate database states (Stephan)</para></listitem>
1167 <listitem><para>Propagate column or table renaming to foreign key constraints</para></listitem>
1168 <listitem><para>Add CREATE OR REPLACE VIEW (Gavin, Neil, Tom)</para></listitem>
1169 <listitem><para>Add CREATE OR REPLACE RULE (Gavin, Neil, Tom)</para></listitem>
1170 <listitem><para>Have rules execute alphabetically, returning more predictable values (Tom)</para></listitem>
1171 <listitem><para>Triggers are now fired in alphabetical order (Tom)</para></listitem>
1172 <listitem><para>Add /contrib/adddepend to handle pre-7.3 object dependencies (Rod)</para></listitem>
1173 <listitem><para>Allow better casting when inserting/updating values (Tom)</para></listitem>
1178 <title>Utility Commands</title>
1180 <listitem><para>Have COPY TO output embedded carriage returns and newlines as \r and \n (Tom)</para></listitem>
1181 <listitem><para>Allow DELIMITER in COPY FROM to be 8-bit clean (Tatsuo)</para></listitem>
1182 <listitem><para>Make <application/pg_dump/ use ALTER TABLE ADD PRIMARY KEY, for performance (Neil)</para></listitem>
1183 <listitem><para>Disable brackets in multistatement rules (Bruce)</para></listitem>
1184 <listitem><para>Disable VACUUM from being called inside a function (Bruce)</para></listitem>
1185 <listitem><para>Allow dropdb and other scripts to use identifiers with spaces (Bruce)</para></listitem>
1186 <listitem><para>Restrict database comment changes to the current database</para></listitem>
1187 <listitem><para>Allow comments on operators, independent of the underlying function (Rod)</para></listitem>
1188 <listitem><para>Rollback SET commands in aborted transactions (Tom)</para></listitem>
1189 <listitem><para>EXPLAIN now outputs as a query (Tom)</para></listitem>
1190 <listitem><para>Display condition expressions and sort keys in EXPLAIN (Tom)</para></listitem>
1191 <listitem><para>Add 'SET LOCAL var = value' to set configuration variables for a single transaction (Tom)</para></listitem>
1192 <listitem><para>Allow ANALYZE to run in a transaction (Bruce)</para></listitem>
1193 <listitem><para>Improve COPY syntax using new WITH clauses, keep backward compatibility (Bruce)</para></listitem>
1194 <listitem><para>Fix <application/pg_dump/ to consistently output tags in non-ASCII dumps (Bruce)</para></listitem>
1195 <listitem><para>Make foreign key constraints clearer in dump file (Rod)</para></listitem>
1196 <listitem><para>Add COMMENT ON CONSTRAINT (Rod)</para></listitem>
1197 <listitem><para>Allow COPY TO/FROM to specify column names (Brent Verner)</para></listitem>
1198 <listitem><para>Dump UNIQUE and PRIMARY KEY constraints as ALTER TABLE (Rod)</para></listitem>
1199 <listitem><para>Have SHOW output a query result (Joe)</para></listitem>
1200 <listitem><para>Generate failure on short COPY lines rather than pad NULLs (Neil)</para></listitem>
1201 <listitem><para>Fix CLUSTER to preserve all table attributes (Alvaro Herrera)</para></listitem>
1202 <listitem><para>New pg_settings table to view/modify GUC settings (Joe)</para></listitem>
1203 <listitem><para>Add smart quoting, portability improvements to <application/pg_dump/ output (Peter)</para></listitem>
1204 <listitem><para>Dump serial columns out as SERIAL (Tom)</para></listitem>
1205 <listitem><para>Enable large file support, >2G for <application/pg_dump/ (Peter, Philip Warner, Bruce)</para></listitem>
1206 <listitem><para>Disallow TRUNCATE on tables that are involved in referential constraints (Rod)</para></listitem>
1207 <listitem><para>Have TRUNCATE also auto-truncate the toast table of the relation (Tom)</para></listitem>
1208 <listitem><para>Add clusterdb utility that will auto-cluster an entire database based on previous CLUSTER operations (Alvaro Herrera)</para></listitem>
1209 <listitem><para>Overhaul pg_dumpall (Peter)</para></listitem>
1210 <listitem><para>Allow REINDEX of TOAST tables (Tom)</para></listitem>
1211 <listitem><para>Implemented START TRANSACTION, per SQL99 (Neil)</para></listitem>
1212 <listitem><para>Fix rare index corruption when a page split affects bulk delete (Tom)</para></listitem>
1213 <listitem><para>Fix ALTER TABLE ... ADD COLUMN for inheritance (Alvaro Herrera)</para></listitem>
1218 <title>Data Types and Functions</title>
1220 <listitem><para>Fix factorial(0) to return 1 (Bruce)</para></listitem>
1221 <listitem><para>Date/time/timezone improvements (Thomas)</para></listitem>
1222 <listitem><para>Fix for array slice extraction (Tom)</para></listitem>
1223 <listitem><para>Fix extract/date_part to report proper microseconds for timestamp (Tatsuo)</para></listitem>
1224 <listitem><para>Allow text_substr() and bytea_substr() to read TOAST values more efficiently (John Gray)</para></listitem>
1225 <listitem><para>Add domain support (Rod)</para></listitem>
1226 <listitem><para>Make WITHOUT TIME ZONE the default for TIMESTAMP and TIME data types (Thomas)</para></listitem>
1227 <listitem><para>Allow alternate storage scheme of 64-bit integers for date/time types using --enable-integer-datetimes in configure (Thomas)</para></listitem>
1228 <listitem><para>Make timezone(timestamptz) return timestamp rather than a string (Thomas)</para></listitem>
1229 <listitem><para>Allow fractional seconds in date/time types for dates prior to 1BC (Thomas)</para></listitem>
1230 <listitem><para>Limit timestamp data types to 6 decimal places of precision (Thomas)</para></listitem>
1231 <listitem><para>Change timezone conversion functions from timetz() to timezone() (Thomas)</para></listitem>
1232 <listitem><para>Add configuration variables datestyle and timezone (Tom)</para></listitem>
1233 <listitem><para>Add OVERLAY(), which allows substitution of a substring in a string (Thomas)</para></listitem>
1234 <listitem><para>Add SIMILAR TO (Thomas, Tom)</para></listitem>
1235 <listitem><para>Add regular expression SUBSTRING(string FROM pat FOR escape) (Thomas)</para></listitem>
1236 <listitem><para>Add LOCALTIME and LOCALTIMESTAMP functions (Thomas)</para></listitem>
1237 <listitem><para>Add named composite types using CREATE TYPE typename AS (column) (Joe)</para></listitem>
1238 <listitem><para>Allow composite type definition in the table alias clause (Joe)</para></listitem>
1239 <listitem><para>Add new API to simplify creation of C language table functions (Joe)</para></listitem>
1240 <listitem><para>Remove ODBC-compatible empty parentheses from calls to SQL99 functions for which these parentheses do not match the standard (Thomas)</para></listitem>
1241 <listitem><para>Allow macaddr data type to accept 12 hex digits with no separators (Mike Wyer)</para></listitem>
1242 <listitem><para>Add CREATE/DROP CAST (Peter)</para></listitem>
1243 <listitem><para>Add IS DISTINCT FROM operator (Thomas)</para></listitem>
1244 <listitem><para>Add SQL99 TREAT() function, synonym for CAST() (Thomas)</para></listitem>
1245 <listitem><para>Add pg_backend_pid() to output backend pid (Bruce)</para></listitem>
1246 <listitem><para>Add IS OF / IS NOT OF type predicate (Thomas)</para></listitem>
1247 <listitem><para>Allow bit string constants without fully-specified length (Thomas)</para></listitem>
1248 <listitem><para>Allow conversion between 8-byte integers and bit strings (Thomas)</para></listitem>
1249 <listitem><para>Implement hex literal conversion to bit string literal (Thomas)</para></listitem>
1250 <listitem><para>Allow table functions to appear in the FROM clause (Joe)</para></listitem>
1251 <listitem><para>Increase maximum number of function parameters to 32 (Bruce)</para></listitem>
1252 <listitem><para>No longer automatically create index for SERIAL column (Tom)</para></listitem>
1253 <listitem><para>Add current_database() (Rod)</para></listitem>
1254 <listitem><para>Fix cash_words() to not overflow buffer (Tom)</para></listitem>
1255 <listitem><para>Add functions replace(), split_part(), to_hex() (Joe)</para></listitem>
1256 <listitem><para>Fix LIKE for bytea as a right-hand argument (Joe)</para></listitem>
1257 <listitem><para>Prevent crashes caused by SELECT cash_out(2) (Tom)</para></listitem>
1258 <listitem><para>Fix to_char(1,'FM999.99') to return a period (Karel)</para></listitem>
1259 <listitem><para>Fix trigger/type/language functions returning OPAQUE to return proper type (Tom)</para></listitem>
1264 <title>Internationalization</title>
1266 <listitem><para>Add additional encodings: Korean (JOHAB), Thai (WIN874), Vietnamese (TCVN), Arabic (WIN1256), Simplified Chinese (GBK), Korean (UHC) (Eiji Tokuya)</para></listitem>
1267 <listitem><para>Enable locale support by default (Peter)</para></listitem>
1268 <listitem><para>Add locale variables (Peter)</para></listitem>
1269 <listitem><para>Escape byes >= 0x7f for multibyte in PQescapeBytea/PQunescapeBytea (Tatsuo)</para></listitem>
1270 <listitem><para>Add locale awareness to regular expression character classes</para></listitem>
1271 <listitem><para>Enable multibyte support by default (Tatsuo)</para></listitem>
1272 <listitem><para>Add GB18030 multibyte support (Bill Huang)</para></listitem>
1273 <listitem><para>Add CREATE/DROP CONVERSION, allowing loadable encodings (Tatsuo, Kaori)</para></listitem>
1274 <listitem><para>Add pg_conversion table (Tatsuo)</para></listitem>
1275 <listitem><para>Add SQL99 CONVERT() function (Tatsuo)</para></listitem>
1276 <listitem><para>pg_dumpall, pg_controldata, and pg_resetxlog now national-language aware (Peter)</para></listitem>
1277 <listitem><para>New and updated translations</para></listitem>
1282 <title>Server-side Languages</title>
1284 <listitem><para>Allow recursive SQL function (Peter)</para></listitem>
1285 <listitem><para>Change PL/Tcl build to use configured compiler and Makefile.shlib (Peter)</para></listitem>
1286 <listitem><para>Overhaul the PL/pgSQL FOUND variable to be more Oracle-compatible (Neil, Tom)</para></listitem>
1287 <listitem><para>Allow PL/pgSQL to handle quoted identifiers (Tom)</para></listitem>
1288 <listitem><para>Allow set-returning PL/pgSQL functions (Neil)</para></listitem>
1289 <listitem><para>Make PL/pgSQL schema-aware (Joe)</para></listitem>
1290 <listitem><para>Remove some memory leaks (Nigel J. Andrews, Tom)</para></listitem>
1297 <listitem><para>Don't lowercase psql \connect database name for 7.2.0 compatibility (Tom)</para></listitem>
1298 <listitem><para>Add psql \timing to time user queries (Greg Sabino Mullane)</para></listitem>
1299 <listitem><para>Have psql \d show index information (Greg Sabino Mullane)</para></listitem>
1300 <listitem><para>New psql \dD shows domains (Jonathan Eisler)</para></listitem>
1301 <listitem><para>Allow psql to show rules on views (Paul ?)</para></listitem>
1302 <listitem><para>Fix for psql variable substitution (Tom)</para></listitem>
1303 <listitem><para>Allow psql \d to show temporary table structure (Tom)</para></listitem>
1304 <listitem><para>Allow psql \d to show foreign keys (Rod)</para></listitem>
1305 <listitem><para>Fix \? to honor \pset pager (Bruce)</para></listitem>
1306 <listitem><para>Have psql reports its version number on startup (Tom)</para></listitem>
1307 <listitem><para>Allow \copy to specify column names (Tom)</para></listitem>
1312 <title>libpq</title>
1314 <listitem><para>Add $HOME/.pgpass to store host/user password combinations (Alvaro Herrera)</para></listitem>
1315 <listitem><para>Add PQunescapeBytea() function to libpq (Patrick Welche)</para></listitem>
1316 <listitem><para>Fix for sending large queries over non-blocking connections (Bernhard Herzog)</para></listitem>
1317 <listitem><para>Fix for libpq using timers on Win9X (David Ford)</para></listitem>
1318 <listitem><para>Allow libpq notify to handle servers with different-length identifiers (Tom)</para></listitem>
1319 <listitem><para>Add libpq PQescapeString() and PQescapeBytea() to Win32 (Bruce)</para></listitem>
1320 <listitem><para>Fix for SSL with non-blocking connections (Jack Bates)</para></listitem>
1321 <listitem><para>Add libpq connection timeout parameter (Denis A Ustimenko)</para></listitem>
1328 <listitem><para>Allow JDBC to compile with JDK 1.4 (Dave)</para></listitem>
1329 <listitem><para>Add JDBC 3 support (Barry)</para></listitem>
1330 <listitem><para>Allows JDBC to set loglevel by adding ?loglevel=X to the connection URL (Barry)</para></listitem>
1331 <listitem><para>Add Driver.info() message that prints out the version number (Barry)</para></listitem>
1332 <listitem><para>Add updateable result sets (Raghu Nidagal, Dave)</para></listitem>
1333 <listitem><para>Add support for callable statements (Paul Bethe)</para></listitem>
1334 <listitem><para>Add query cancel capability</para></listitem>
1335 <listitem><para>Add refresh row (Dave)</para></listitem>
1336 <listitem><para>Fix MD5 encryption handling for multibyte servers (Jun Kawai)</para></listitem>
1337 <listitem><para>Add support for prepared statements (Barry)</para></listitem>
1342 <title>Miscellaneous Interfaces</title>
1344 <listitem><para>Fixed ECPG bug concerning octal numbers in single quotes (Michael)</para></listitem>
1345 <listitem><para>Move src/interfaces/libpgeasy to http://gborg.postgresql.org (Marc, Bruce)</para></listitem>
1346 <listitem><para>Improve Python interface (Elliot Lee, Andrew Johnson, Greg Copeland)</para></listitem>
1347 <listitem><para>Add libpgtcl connection close event (Gerhard Hintermayer)</para></listitem>
1348 <listitem><para>Move src/interfaces/libpq++ to http://gborg.postgresql.org (Marc, Bruce)</para></listitem>
1349 <listitem><para>Move src/interfaces/odbc to http://gborg.postgresql.org (Marc)</para></listitem>
1350 <listitem><para>Move src/interfaces/libpgeasy to http://gborg.postgresql.org (Marc, Bruce)</para></listitem>
1351 <listitem><para>Move src/interfaces/perl5 to http://gborg.postgresql.org (Marc, Bruce)</para></listitem>
1352 <listitem><para>Remove src/bin/pgaccess from main tree, now at http://www.pgaccess.org (Bruce)</para></listitem>
1353 <listitem><para>Add pg_on_connection_loss command to libpgtcl (Gerhard Hintermayer, Tom)</para></listitem>
1358 <title>Source Code</title>
1360 <listitem><para>Fix for parallel make (Peter)</para></listitem>
1361 <listitem><para>AIX fixes for linking Tcl (Andreas Zeugswetter)</para></listitem>
1362 <listitem><para>Allow PL/Perl to build under Cygwin (Jason Tishler)</para></listitem>
1363 <listitem><para>Improve MIPS compiles (Peter, Oliver Elphick)</para></listitem>
1364 <listitem><para>Require Autoconf version 2.53 (Peter)</para></listitem>
1365 <listitem><para>Require readline and zlib by default in configure (Peter)</para></listitem>
1366 <listitem><para>Allow Solaris to use Intimate Shared Memory (ISM), for performance (Scott Brunza, P.J. Josh Rovero)</para></listitem>
1367 <listitem><para>Always enable syslog in compile, remove --enable-syslog option (Tatsuo)</para></listitem>
1368 <listitem><para>Always enable multibyte in compile, remove --enable-multibyte option (Tatsuo)</para></listitem>
1369 <listitem><para>Always enable locale in compile, remove --enable-locale option (Peter)</para></listitem>
1370 <listitem><para>Fix for Win9x DLL creation (Magnus Naeslund)</para></listitem>
1371 <listitem><para>Fix for link() usage by WAL code on Win32, BeOS (Jason Tishler)</para></listitem>
1372 <listitem><para>Add sys/types.h to c.h, remove from main files (Peter, Bruce)</para></listitem>
1373 <listitem><para>Fix AIX hang on SMP machines (Tomoyuki Niijima)</para></listitem>
1374 <listitem><para>AIX SMP hang fix (Tomoyuki Niijima)</para></listitem>
1375 <listitem><para>Fix pre-1970 date handling on newer glibc libraries (Tom)</para></listitem>
1376 <listitem><para>Fix PowerPC SMP locking (Tom)</para></listitem>
1377 <listitem><para>Prevent gcc -ffast-math from being used (Peter, Tom)</para></listitem>
1378 <listitem><para>Bison >= 1.50 now required for developer builds</para></listitem>
1379 <listitem><para>Kerberos 5 support now builds with Heimdal (Peter)</para></listitem>
1380 <listitem><para>Add appendix in the User's Guide which lists SQL features (Thomas)</para></listitem>
1381 <listitem><para>Improve loadable module linking to use RTLD_NOW (Tom)</para></listitem>
1382 <listitem><para>New error levels WARNING, INFO, LOG, DEBUG[1-5] (Bruce)</para></listitem>
1383 <listitem><para>New src/port directory holds replaced libc functions (Peter, Bruce)</para></listitem>
1384 <listitem><para>New pg_namespace system catalog for schemas (Tom)</para></listitem>
1385 <listitem><para>Add pg_class.relnamespace for schemas (Tom)</para></listitem>
1386 <listitem><para>Add pg_type.typnamespace for schemas (Tom)</para></listitem>
1387 <listitem><para>Add pg_proc.pronamespace for schemas (Tom)</para></listitem>
1388 <listitem><para>Restructure aggregates to have pg_proc entries (Tom)</para></listitem>
1389 <listitem><para>System relations now have their own namespace, pg_* test not required (Fernando Nasser)</para></listitem>
1390 <listitem><para>Rename TOAST index names to be *_index rather than *_idx (Neil)</para></listitem>
1391 <listitem><para>Add namespaces for operators, opclasses (Tom)</para></listitem>
1392 <listitem><para>Add additional checks to server control file (Thomas)</para></listitem>
1393 <listitem><para>New Polish FAQ (Marcin Mazurek)</para></listitem>
1394 <listitem><para>Add Posix semaphore support (Tom)</para></listitem>
1395 <listitem><para>Document need for reindex (Bruce)</para></listitem>
1396 <listitem><para>Rename some internal identifiers to simplify Win32 compile (Jan, Katherine Ward)</para></listitem>
1397 <listitem><para>Add documentation on computing disk space (Bruce)</para></listitem>
1398 <listitem><para>Remove KSQO from GUC (Bruce)</para></listitem>
1399 <listitem><para>Fix memory leak in rtree (Kenneth Been)</para></listitem>
1400 <listitem><para>Modify a few error messages for consistency (Bruce)</para></listitem>
1401 <listitem><para>Remove unused system table columns (Peter)</para></listitem>
1402 <listitem><para>Make system columns NOT NULL where appropriate (Tom)</para></listitem>
1403 <listitem><para>Clean up use of sprintf in favor of snprintf() (Neil, Jukka Holappa)</para></listitem>
1404 <listitem><para>Remove OPAQUE and create specific subtypes (Tom)</para></listitem>
1405 <listitem><para>Cleanups in array internal handling (Joe, Tom)</para></listitem>
1406 <listitem><para>Disallow pg_atoi('') (Bruce)</para></listitem>
1407 <listitem><para>Remove parameter wal_files because WAL files are now recycled (Bruce)</para></listitem>
1408 <listitem><para>Add version numbers to heap pages (Tom)</para></listitem>
1413 <title>Contrib</title>
1415 <listitem><para>Allow inet arrays in /contrib/array (Neil)</para></listitem>
1416 <listitem><para>GiST fixes (Teodor Sigaev, Neil)</para></listitem>
1417 <listitem><para>Upgrade /contrib/mysql</para></listitem>
1418 <listitem><para>Add /contrib/dbsize which shows table sizes without vacuum (Peter)</para></listitem>
1419 <listitem><para>Add /contrib/intagg, integer aggregator routines (mlw)</para></listitem>
1420 <listitem><para>Improve /contrib/oid2name (Neil, Bruce)</para></listitem>
1421 <listitem><para>Improve /contrib/tsearch (Oleg, Teodor Sigaev)</para></listitem>
1422 <listitem><para>Cleanups of /contrib/rserver (Alexey V. Borzov)</para></listitem>
1423 <listitem><para>Update /contrib/oracle conversion utility (Gilles Darold)</para></listitem>
1424 <listitem><para>Update /contrib/dblink (Joe)</para></listitem>
1425 <listitem><para>Improve options supported by /contrib/vacuumlo (Mario Weilguni)</para></listitem>
1426 <listitem><para>Improvements to /contrib/intarray (Oleg, Teodor Sigaev, Andrey Oktyabrski)</para></listitem>
1427 <listitem><para>Add /contrib/reindexdb utility (Shaun Thomas)</para></listitem>
1428 <listitem><para>Add indexing to /contrib/isbn_issn (Dan Weston)</para></listitem>
1429 <listitem><para>Add /contrib/dbmirror (Steven Singer)</para></listitem>
1430 <listitem><para>Improve /contrib/pgbench (Neil)</para></listitem>
1431 <listitem><para>Add /contrib/tablefunc table function examples (Joe)</para></listitem>
1432 <listitem><para>Add /contrib/ltree data type for tree structures (Teodor Sigaev, Oleg Bartunov)</para></listitem>
1433 <listitem><para>Move /contrib/pg_controldata, pg_resetxlog into main tree (Bruce)</para></listitem>
1434 <listitem><para>Fixes to /contrib/cube (Bruno Wolff)</para></listitem>
1435 <listitem><para>Improve /contrib/fulltextindex (Christopher)</para></listitem>
1443 <sect1 id="release-7-2-4">
1444 <title>Release 7.2.4</title>
1447 <title>Release date</title>
1448 <simpara>2003-01-30</simpara>
1452 This release contains a variety of fixes for version 7.2.3,
1453 including fixes to prevent possible data loss.
1457 <title>Migration to version 7.2.4</title>
1460 A dump/restore is <emphasis>not</emphasis> required for those
1461 running version 7.2.*.
1466 <title>Changes</title>
1469 <listitem><para>Fix some additional cases of VACUUM "No one parent tuple was found" error</para></listitem>
1470 <listitem><para>Prevent VACUUM from being called inside a function (Bruce)</para></listitem>
1471 <listitem><para>Ensure pg_clog updates are sync'd to disk before marking checkpoint complete</para></listitem>
1472 <listitem><para>Avoid integer overflow during large hash joins</para></listitem>
1473 <listitem><para>Make GROUP commands work when pg_group.grolist is large enough to be toasted</para></listitem>
1474 <listitem><para>Fix errors in datetime tables; some timezone names weren't being recognized</para></listitem>
1475 <listitem><para>Fix integer overflows in circle_poly(), path_encode(), path_add() (Neil)</para></listitem>
1476 <listitem><para>Repair long-standing logic errors in lseg_eq(), lseg_ne(), lseg_center()</para></listitem>
1482 <sect1 id="release-7-2-3">
1483 <title>Release 7.2.3</title>
1486 <title>Release date</title>
1487 <simpara>2002-10-01</simpara>
1491 This release contains a variety of fixes for version 7.2.2,
1492 including fixes to prevent possible data loss.
1496 <title>Migration to version 7.2.3</title>
1499 A dump/restore is <emphasis>not</emphasis> required for those
1500 running version 7.2.*.
1505 <title>Changes</title>
1508 <listitem><para>Prevent possible compressed transaction log loss (Tom)</para></listitem>
1509 <listitem><para>Prevent non-superuser from increasing most recent vacuum info (Tom)</para></listitem>
1510 <listitem><para>Handle pre-1970 date values in newer versions of glibc (Tom)</para></listitem>
1511 <listitem><para>Fix possible hang during server shutdown</para></listitem>
1512 <listitem><para>Prevent spinlock hangs on SMP PPC machines (Tomoyuki Niijima)</para></listitem>
1513 <listitem><para>Fix <application/pg_dump/ to properly dump FULL JOIN USING (Tom)</para></listitem>
1519 <sect1 id="release-7-2-2">
1520 <title>Release 7.2.2</title>
1523 <title>Release date</title>
1524 <simpara>2002-08-23</simpara>
1528 This release contains a variety of fixes for version 7.2.1.
1532 <title>Migration to version 7.2.2</title>
1535 A dump/restore is <emphasis>not</emphasis> required for those
1536 running version 7.2.*.
1541 <title>Changes</title>
1544 <listitem><para>Allow EXECUTE of "CREATE TABLE AS ... SELECT" in PL/pgSQL (Tom)</para></listitem>
1545 <listitem><para>Fix for compressed transaction log id wraparound (Tom)</para></listitem>
1546 <listitem><para>Fix PQescapeBytea/PQunescapeBytea so that they handle bytes > 0x7f (Tatsuo)</para></listitem>
1547 <listitem><para>Fix for psql and <application/pg_dump/ crashing when invoked with non-existent long options (Tatsuo)</para></listitem>
1548 <listitem><para>Fix crash when invoking geometric operators (Tom)</para></listitem>
1549 <listitem><para>Allow OPEN cursor(args) (Tom)</para></listitem>
1550 <listitem><para>Fix for rtree_gist index build (Teodor)</para></listitem>
1551 <listitem><para>Fix for dumping user-defined aggregates (Tom)</para></listitem>
1552 <listitem><para>contrib/intarray fixes (Oleg)</para></listitem>
1553 <listitem><para>Fix for complex UNION/EXCEPT/INTERSECT queries using parens (Tom)</para></listitem>
1554 <listitem><para>Fix to pg_convert (Tatsuo)</para></listitem>
1555 <listitem><para>Fix for crash with long DATA strings (Thomas, Neil)</para></listitem>
1556 <listitem><para>Fix for repeat(), lpad(), rpad() and long strings (Neil)</para></listitem>
1562 <sect1 id="release-7-2-1">
1563 <title>Release 7.2.1</title>
1566 <title>Release date</title>
1567 <simpara>2002-03-21</simpara>
1571 This release contains a variety of fixes for version 7.2.
1575 <title>Migration to version 7.2.1</title>
1578 A dump/restore is <emphasis>not</emphasis> required for those
1579 running version 7.2.
1584 <title>Changes</title>
1587 <listitem><para>Ensure that sequence counters do not go backwards after a crash (Tom)</para></listitem>
1588 <listitem><para>Fix pgaccess kanji-conversion key binding (Tatsuo)</para></listitem>
1589 <listitem><para>Optimizer improvements (Tom)</para></listitem>
1590 <listitem><para>Cash I/O improvements (Tom)</para></listitem>
1591 <listitem><para>New Russian FAQ</para></listitem>
1592 <listitem><para>Compile fix for missing AuthBlockSig (Heiko)</para></listitem>
1593 <listitem><para>Additional time zones and time zone fixes (Thomas)</para></listitem>
1594 <listitem><para>Allow psql \connect to handle mixed case database and user names (Tom)</para></listitem>
1595 <listitem><para>Return proper OID on command completion even with ON INSERT rules (Tom)</para></listitem>
1596 <listitem><para>Allow COPY FROM to use 8-bit DELIMITERS (Tatsuo)</para></listitem>
1597 <listitem><para>Fix bug in extract/date_part for milliseconds/microseconds (Tatsuo)</para></listitem>
1598 <listitem><para>Improve handling of multiple UNIONs with different lengths (Tom)</para></listitem>
1599 <listitem><para>contrib/btree_gist improvements (Teodor Sigaev)</para></listitem>
1600 <listitem><para>contrib/tsearch dictionary improvements, see README.tsearch for an additional installation step (Thomas T. Thai, Teodor Sigaev)</para></listitem>
1601 <listitem><para>Fix for array subscripts handling (Tom)</para></listitem>
1602 <listitem><para>Allow EXECUTE of "CREATE TABLE AS ... SELECT" in PL/pgSQL (Tom)</para></listitem>
1608 <sect1 id="release-7-2">
1609 <title>Release 7.2</title>
1612 <title>Release date</title>
1613 <simpara>2002-02-04</simpara>
1617 <title>Overview</title>
1620 This release improves <productname>PostgreSQL</> for use in
1621 high-volume applications.
1625 Major changes in this release:
1632 Vacuuming no longer locks tables, thus allowing normal user
1633 access during the vacuum. A new <command>VACUUM FULL</>
1634 command does old-style vacuum by locking the table and
1635 shrinking the on-disk copy of the table.
1641 <term>Transactions</term>
1644 There is no longer a problem with installations that exceed
1645 four billion transactions.
1654 OIDs are now optional. Users can now create tables without
1655 OIDs for cases where OID usage is excessive.
1661 <term>Optimizer</term>
1664 The system now computes histogram column statistics during
1665 <command>ANALYZE</>, allowing much better optimizer choices.
1671 <term>Security</term>
1674 A new MD5 encryption option allows more secure storage and
1675 transfer of passwords. A new Unix-domain socket
1676 authentication option is available on Linux and BSD systems.
1682 <term>Statistics</term>
1685 Administrators can use the new table access statistics module
1686 to get fine-grained information about table and index usage.
1692 <term>Internationalization</term>
1695 Program and library messages can now be displayed in several
1705 <title>Migration to version 7.2</title>
1708 A dump/restore using <command>pg_dump</command> is required for
1709 those wishing to migrate data from any previous release.
1713 Observe the following incompatibilities:
1718 The semantics of the <command>VACUUM</command> command have
1719 changed in this release. You may wish to update your
1720 maintenance procedures accordingly.
1726 In this release, comparisons using <literal>= NULL</literal>
1727 will always return false (or NULL, more precisely). Previous
1728 releases automatically transformed this syntax to <literal>IS
1729 NULL</literal>. The old behavior can be re-enabled using a
1730 <filename>postgresql.conf</filename> parameter.
1736 The <filename>pg_hba.conf</> and <filename>pg_ident.conf</>
1737 configuration is now only reloaded after receiving a
1738 <systemitem>SIGHUP</> signal, not with each connection.
1744 The function <filename>octet_length()</> now returns the uncompressed data length.
1750 The date/time value <literal>'current'</literal> is no longer
1751 available. You will need to rewrite your applications.
1757 The <literal>timestamp()</literal>, <literal>time()</literal>,
1758 and <literal>interval()</literal> functions are no longer
1759 available. Instead of <literal>timestamp()</literal>, use
1760 <literal>timestamp 'string'</literal> or <literal>CAST</literal>.
1767 The <literal>SELECT ... LIMIT #,#</literal> syntax will be removed
1768 in the next release. You should change your queries to use
1769 separate LIMIT and OFFSET clauses, e.g. <literal>LIMIT 10 OFFSET
1775 <title>Changes</title>
1778 <title>Server Operation</title>
1780 <listitem><para>Create temporary files in a separate directory (Bruce)</para></listitem>
1781 <listitem><para>Delete orphaned temporary files on postmaster startup (Bruce)</para></listitem>
1782 <listitem><para>Added unique indexes to some system tables (Tom)</para></listitem>
1783 <listitem><para>System table operator reorganization (Oleg Bartunov, Teodor Sigaev, Tom)</para></listitem>
1784 <listitem><para>Renamed pg_log to pg_clog (Tom)</para></listitem>
1785 <listitem><para>Enable SIGTERM, SIGQUIT to kill backends (Jan)</para></listitem>
1786 <listitem><para>Removed compile-time limit on number of backends (Tom)</para></listitem>
1787 <listitem><para>Better cleanup for semaphore resource failure (Tatsuo, Tom)</para></listitem>
1788 <listitem><para>Allow safe transaction ID wraparound (Tom)</para></listitem>
1789 <listitem><para>Removed OIDs from some system tables (Tom)</para></listitem>
1790 <listitem><para>Removed "triggered data change violation" error check (Tom)</para></listitem>
1791 <listitem><para>SPI portal creation of prepared/saved plans (Jan)</para></listitem>
1792 <listitem><para>Allow SPI column functions to work for system columns (Tom)</para></listitem>
1793 <listitem><para>Long value compression improvement (Tom)</para></listitem>
1794 <listitem><para>Statistics collector for table, index access (Jan)</para></listitem>
1795 <listitem><para>Truncate extra-long sequence names to a reasonable value (Tom)</para></listitem>
1796 <listitem><para>Measure transaction times in milliseconds (Thomas)</para></listitem>
1797 <listitem><para>Fix TID sequential scans (Hiroshi)</para></listitem>
1798 <listitem><para>Superuser ID now fixed at 1 (Peter E)</para></listitem>
1799 <listitem><para>New pg_ctl "reload" option (Tom)</para></listitem>
1804 <title>Performance</title>
1806 <listitem><para>Optimizer improvements (Tom)</para></listitem>
1807 <listitem><para>New histogram column statistics for optimizer (Tom)</para></listitem>
1808 <listitem><para>Reuse write-ahead log files rather than discarding them (Tom)</para></listitem>
1809 <listitem><para>Cache improvements (Tom)</para></listitem>
1810 <listitem><para>IS NULL, IS NOT NULL optimizer improvement (Tom)</para></listitem>
1811 <listitem><para>Improve lock manager to reduce lock contention (Tom)</para></listitem>
1812 <listitem><para>Keep relcache entries for index access support functions (Tom)</para></listitem>
1813 <listitem><para>Allow better selectivity with NaN and infinities in NUMERIC (Tom)</para></listitem>
1814 <listitem><para>R-tree performance improvements (Kenneth Been)</para></listitem>
1815 <listitem><para>B-tree splits more efficient (Tom)</para></listitem>
1820 <title>Privileges</title>
1822 <listitem><para>Change UPDATE, DELETE permissions to be distinct (Peter E)</para></listitem>
1823 <listitem><para>New REFERENCES, TRIGGER privileges (Peter E)</para></listitem>
1824 <listitem><para>Allow GRANT/REVOKE to/from more than one user at a time (Peter E)</para></listitem>
1825 <listitem><para>New has_table_privilege() function (Joe Conway)</para></listitem>
1826 <listitem><para>Allow non-superuser to vacuum database (Tom)</para></listitem>
1827 <listitem><para>New SET SESSION AUTHORIZATION command (Peter E)</para></listitem>
1828 <listitem><para>Fix bug in privilege modifications on newly created tables (Tom)</para></listitem>
1829 <listitem><para>Disallow access to pg_statistic for non-superuser, add user-accessible views (Tom)</para></listitem>
1834 <title>Client Authentication</title>
1836 <listitem><para>Fork postmaster before doing authentication to prevent hangs (Peter E)</para></listitem>
1837 <listitem><para>Add ident authentication over Unix domain sockets on Linux, *BSD (Helge Bahmann, Oliver Elphick, Teodor Sigaev, Bruce)</para></listitem>
1838 <listitem><para>Add a password authentication method that uses MD5 encryption (Bruce)</para></listitem>
1839 <listitem><para>Allow encryption of stored passwords using MD5 (Bruce)</para></listitem>
1840 <listitem><para>PAM authentication (Dominic J. Eidson)</para></listitem>
1841 <listitem><para>Load pg_hba.conf and pg_ident.conf only on startup and SIGHUP (Bruce)</para></listitem>
1846 <title>Server Configuration</title>
1848 <listitem><para>Interpretation of some time zone abbreviations as Australian rather than North American now settable at run time (Bruce)</para></listitem>
1849 <listitem><para>New parameter to set default transaction isolation level (Peter E)</para></listitem>
1850 <listitem><para>New parameter to enable conversion of "expr = NULL" into "expr IS NULL", off by default (Peter E)</para></listitem>
1851 <listitem><para>New parameter to control memory usage by VACUUM (Tom)</para></listitem>
1852 <listitem><para>New parameter to set client authentication timeout (Tom)</para></listitem>
1853 <listitem><para>New parameter to set maximum number of open files (Tom)</para></listitem>
1858 <title>Queries</title>
1860 <listitem><para>Statements added by INSERT rules now execute after the INSERT (Jan)</para></listitem>
1861 <listitem><para>Prevent unadorned relation names in target list (Bruce)</para></listitem>
1862 <listitem><para>NULLs now sort after all normal values in ORDER BY (Tom)</para></listitem>
1863 <listitem><para>New IS UNKNOWN, IS NOT UNKNOWN Boolean tests (Tom)</para></listitem>
1864 <listitem><para>New SHARE UPDATE EXCLUSIVE lock mode (Tom)</para></listitem>
1865 <listitem><para>New EXPLAIN ANALYZE command that shows run times and row counts (Martijn van Oosterhout)</para></listitem>
1866 <listitem><para>Fix problem with LIMIT and subqueries (Tom)</para></listitem>
1867 <listitem><para>Fix for LIMIT, DISTINCT ON pushed into subqueries (Tom)</para></listitem>
1868 <listitem><para>Fix nested EXCEPT/INTERSECT (Tom)</para></listitem>
1873 <title>Schema Manipulation</title>
1875 <listitem><para>Fix SERIAL in temporary tables (Bruce)</para></listitem>
1876 <listitem><para>Allow temporary sequences (Bruce)</para></listitem>
1877 <listitem><para>Sequences now use int8 internally (Tom)</para></listitem>
1878 <listitem><para>New SERIAL8 creates int8 columns with sequences, default still SERIAL4 (Tom)</para></listitem>
1879 <listitem><para>Make OIDs optional using WITHOUT OIDS (Tom)</para></listitem>
1880 <listitem><para>Add %TYPE syntax to CREATE TYPE (Ian Lance Taylor)</para></listitem>
1881 <listitem><para>Add ALTER TABLE / DROP CONSTRAINT for CHECK constraints (Christopher Kings-Lynne)</para></listitem>
1882 <listitem><para>New CREATE OR REPLACE FUNCTION to alter existing function (preserving the function OID) (Gavin Sherry)</para></listitem>
1883 <listitem><para>Add ALTER TABLE / ADD [ UNIQUE | PRIMARY ] (Christopher Kings-Lynne)</para></listitem>
1884 <listitem><para>Allow column renaming in views</para></listitem>
1885 <listitem><para>Make ALTER TABLE / RENAME COLUMN update column names of indexes (Brent Verner)</para></listitem>
1886 <listitem><para>Fix for ALTER TABLE / ADD CONSTRAINT ... CHECK with inherited tables (Stephan Szabo)</para></listitem>
1887 <listitem><para>ALTER TABLE RENAME update foreign-key trigger arguments correctly (Brent Verner)</para></listitem>
1888 <listitem><para>DROP AGGREGATE and COMMENT ON AGGREGATE now accept an aggtype (Tom)</para></listitem>
1889 <listitem><para>Add automatic return type data casting for SQL functions (Tom)</para></listitem>
1890 <listitem><para>Allow GiST indexes to handle NULLs and multikey indexes (Oleg Bartunov, Teodor Sigaev, Tom)</para></listitem>
1891 <listitem><para>Enable partial indexes (Martijn van Oosterhout)</para></listitem>
1896 <title>Utility Commands</title>
1898 <listitem><para>Add RESET ALL, SHOW ALL (Marko Kreen)</para></listitem>
1899 <listitem><para>CREATE/ALTER USER/GROUP now allow options in any order (Vince)</para></listitem>
1900 <listitem><para>Add LOCK A, B, C functionality (Neil Padgett)</para></listitem>
1901 <listitem><para>New ENCRYPTED/UNENCRYPTED option to CREATE/ALTER USER (Bruce)</para></listitem>
1902 <listitem><para>New light-weight VACUUM does not lock table; old semantics are available as VACUUM FULL (Tom)</para></listitem>
1903 <listitem><para>Disable COPY TO/FROM on views (Bruce)</para></listitem>
1904 <listitem><para>COPY DELIMITERS string must be exactly one character (Tom)</para></listitem>
1905 <listitem><para>VACUUM warning about index tuples fewer than heap now only appears when appropriate (Martijn van Oosterhout)</para></listitem>
1906 <listitem><para>Fix permission checks for CREATE INDEX (Tom)</para></listitem>
1907 <listitem><para>Disallow inappropriate use of CREATE/DROP INDEX/TRIGGER/VIEW (Tom)</para></listitem>
1912 <title>Data Types and Functions</title>
1914 <listitem><para>SUM(), AVG(), COUNT() now uses int8 internally for speed (Tom)</para></listitem>
1915 <listitem><para>Add convert(), convert2() (Tatsuo)</para></listitem>
1916 <listitem><para>New function bit_length() (Peter E)</para></listitem>
1917 <listitem><para>Make the "n" in CHAR(n)/VARCHAR(n) represents letters, not bytes (Tatsuo)</para></listitem>
1918 <listitem><para>CHAR(), VARCHAR() now reject strings that are too long (Peter E)</para></listitem>
1919 <listitem><para>BIT VARYING now rejects bit strings that are too long (Peter E)</para></listitem>
1920 <listitem><para>BIT now rejects bit strings that do not match declared size (Peter E)</para></listitem>
1921 <listitem><para>INET, CIDR text conversion functions (Alex Pilosov)</para></listitem>
1922 <listitem><para>INET, CIDR operators << and <<= indexable (Alex Pilosov)</para></listitem>
1923 <listitem><para>Bytea \### now requires valid three digit octal number</para></listitem>
1924 <listitem><para>Bytea comparison improvements, now supports =, <>, >, >=, <, and <=</para></listitem>
1925 <listitem><para>Bytea now supports B-tree indexes</para></listitem>
1926 <listitem><para>Bytea now supports LIKE, LIKE...ESCAPE, NOT LIKE, NOT LIKE...ESCAPE</para></listitem>
1927 <listitem><para>Bytea now supports concatenation</para></listitem>
1928 <listitem><para>New bytea functions: position, substring, trim, btrim, and length</para></listitem>
1929 <listitem><para>New encode() function mode, "escaped", converts minimally escaped bytea to/from text</para></listitem>
1930 <listitem><para>Add pg_database_encoding_max_length() (Tatsuo)</para></listitem>
1931 <listitem><para>Add pg_client_encoding() function (Tatsuo)</para></listitem>
1932 <listitem><para>now() returns time with millisecond precision (Thomas)</para></listitem>
1933 <listitem><para>New TIMESTAMP WITHOUT TIMEZONE data type (Thomas)</para></listitem>
1934 <listitem><para>Add ISO date/time specification with "T", yyyy-mm-ddThh:mm:ss (Thomas)</para></listitem>
1935 <listitem><para>New xid/int comparison functions (Hiroshi)</para></listitem>
1936 <listitem><para>Add precision to TIME, TIMESTAMP, and INTERVAL data types (Thomas)</para></listitem>
1937 <listitem><para>Modify type coercion logic to attempt binary-compatible functions first (Tom)</para></listitem>
1938 <listitem><para>New encode() function installed by default (Marko Kreen)</para></listitem>
1939 <listitem><para>Improved to_*() conversion functions (Karel Zak)</para></listitem>
1940 <listitem><para>Optimize LIKE/ILIKE when using single-byte encodings (Tatsuo)</para></listitem>
1941 <listitem><para>New functions in contrib/pgcrypto: crypt(), hmac(), encrypt(), gen_salt() (Marko Kreen)</para></listitem>
1942 <listitem><para>Correct description of translate() function (Bruce)</para></listitem>
1943 <listitem><para>Add INTERVAL argument for SET TIME ZONE (Thomas)</para></listitem>
1944 <listitem><para>Add INTERVAL YEAR TO MONTH (etc.) syntax (Thomas)</para></listitem>
1945 <listitem><para>Optimize length functions when using single-byte encodings (Tatsuo)</para></listitem>
1946 <listitem><para>Fix path_inter, path_distance, path_length, dist_ppath to handle closed paths (Curtis Barrett, Tom)</para></listitem>
1947 <listitem><para>octet_length(text) now returns non-compressed length (Tatsuo, Bruce)</para></listitem>
1948 <listitem><para>Handle "July" full name in date/time literals (Greg Sabino Mullane)</para></listitem>
1949 <listitem><para>Some datatype() function calls now evaluated differently</para></listitem>
1950 <listitem><para>Add support for Julian and ISO time specifications (Thomas)</para></listitem>
1955 <title>Internationalization</title>
1957 <listitem><para>National language support in psql, <application/pg_dump/, libpq, and server (Peter E)</para></listitem>
1958 <listitem><para>Message translations in Chinese (simplified, traditional), Czech, French, German, Hungarian, Russian, Swedish (Peter E, Serguei A. Mokhov, Karel Zak, Weiping He, Zhenbang Wei, Kovacs Zoltan)</para></listitem>
1959 <listitem><para>Make trim, ltrim, rtrim, btrim, lpad, rpad, translate multibyte aware (Tatsuo)</para></listitem>
1960 <listitem><para>Add LATIN5,6,7,8,9,10 support (Tatsuo)</para></listitem>
1961 <listitem><para>Add ISO 8859-5,6,7,8 support (Tatsuo)</para></listitem>
1962 <listitem><para>Correct LATIN5 to mean ISO-8859-9, not ISO-8859-5 (Tatsuo)</para></listitem>
1963 <listitem><para>Make mic2ascii() non-ASCII aware (Tatsuo)</para></listitem>
1964 <listitem><para>Reject invalid multibyte character sequences (Tatsuo)</para></listitem>
1969 <title><application>PL/pgSQL</></title>
1971 <listitem><para>Now uses portals for SELECT loops, allowing huge result sets (Jan)</para></listitem>
1972 <listitem><para>CURSOR and REFCURSOR support (Jan)</para></listitem>
1973 <listitem><para>Can now return open cursors (Jan)</para></listitem>
1974 <listitem><para>Add ELSEIF (Klaus Reger)</para></listitem>
1975 <listitem><para>Improve PL/pgSQL error reporting, including location of error (Tom)</para></listitem>
1976 <listitem><para>Allow IS or FOR key words in cursor declaration, for compatibility (Bruce)</para></listitem>
1977 <listitem><para>Fix for SELECT ... FOR UPDATE (Tom)</para></listitem>
1978 <listitem><para>Fix for PERFORM returning multiple rows (Tom)</para></listitem>
1979 <listitem><para>Make PL/pgSQL use the server's type coercion code (Tom)</para></listitem>
1980 <listitem><para>Memory leak fix (Jan, Tom)</para></listitem>
1981 <listitem><para>Make trailing semicolon optional (Tom)</para></listitem>
1986 <title>PL/Perl</title>
1988 <listitem><para>New untrusted PL/Perl (Alex Pilosov)</para></listitem>
1989 <listitem><para>PL/Perl is now built on some platforms even if libperl is not shared (Peter E)</para></listitem>
1994 <title>PL/Tcl</title>
1996 <listitem><para>Now reports errorInfo (Vsevolod Lobko)</para></listitem>
1997 <listitem><para>Add spi_lastoid function (bob@redivi.com)</para></listitem>
2002 <title>PL/Python</title>
2004 <listitem><para>...is new (Andrew Bosma)</para></listitem>
2009 <title><application>psql</></title>
2011 <listitem><para>\d displays indexes in unique, primary groupings (Christopher Kings-Lynne)</para></listitem>
2012 <listitem><para>Allow trailing semicolons in backslash commands (Greg Sabino Mullane)</para></listitem>
2013 <listitem><para>Read password from /dev/tty if possible</para></listitem>
2014 <listitem><para>Force new password prompt when changing user and database (Tatsuo, Tom)</para></listitem>
2015 <listitem><para>Format the correct number of columns for Unicode (Patrice)</para></listitem>
2020 <title><application>libpq</></title>
2022 <listitem><para>New function PQescapeString() to escape quotes in command strings (Florian Weimer)</para></listitem>
2023 <listitem><para>New function PQescapeBytea() escapes binary strings for use as SQL string literals</para></listitem>
2030 <listitem><para>Return OID of INSERT (Ken K)</para></listitem>
2031 <listitem><para>Handle more data types (Ken K)</para></listitem>
2032 <listitem><para>Handle single quotes and newlines in strings (Ken K)</para></listitem>
2033 <listitem><para>Handle NULL variables (Ken K)</para></listitem>
2034 <listitem><para>Fix for time zone handling (Barry Lind)</para></listitem>
2035 <listitem><para>Improved Druid support</para></listitem>
2036 <listitem><para>Allow eight-bit characters with non-multibyte server (Barry Lind)</para></listitem>
2037 <listitem><para>Support BIT, BINARY types (Ned Wolpert)</para></listitem>
2038 <listitem><para>Reduce memory usage (Michael Stephens, Dave Cramer)</para></listitem>
2039 <listitem><para>Update DatabaseMetaData (Peter E)</para></listitem>
2040 <listitem><para>Add DatabaseMetaData.getCatalogs() (Peter E)</para></listitem>
2041 <listitem><para>Encoding fixes (Anders Bengtsson)</para></listitem>
2042 <listitem><para>Get/setCatalog methods (Jason Davies)</para></listitem>
2043 <listitem><para>DatabaseMetaData.getColumns() now returns column defaults (Jason Davies)</para></listitem>
2044 <listitem><para>DatabaseMetaData.getColumns() performance improvement (Jeroen van Vianen)</para></listitem>
2045 <listitem><para>Some JDBC1 and JDBC2 merging (Anders Bengtsson)</para></listitem>
2046 <listitem><para>Transaction performance improvements (Barry Lind)</para></listitem>
2047 <listitem><para>Array fixes (Greg Zoller)</para></listitem>
2048 <listitem><para>Serialize addition </para></listitem>
2049 <listitem><para>Fix batch processing (Rene Pijlman)</para></listitem>
2050 <listitem><para>ExecSQL method reorganization (Anders Bengtsson)</para></listitem>
2051 <listitem><para>GetColumn() fixes (Jeroen van Vianen)</para></listitem>
2052 <listitem><para>Fix isWriteable() function (Rene Pijlman)</para></listitem>
2053 <listitem><para>Improved passage of JDBC2 conformance tests (Rene Pijlman)</para></listitem>
2054 <listitem><para>Add bytea type capability (Barry Lind)</para></listitem>
2055 <listitem><para>Add isNullable() (Rene Pijlman)</para></listitem>
2056 <listitem><para>JDBC date/time test suite fixes (Liam Stewart)</para></listitem>
2057 <listitem><para>Fix for SELECT 'id' AS xxx FROM table (Dave Cramer)</para></listitem>
2058 <listitem><para>Fix DatabaseMetaData to show precision properly (Mark Lillywhite)</para></listitem>
2059 <listitem><para>New getImported/getExported keys (Jason Davies)</para></listitem>
2060 <listitem><para>MD5 password encryption support (Jeremy Wohl)</para></listitem>
2061 <listitem><para>Fix to actually use type cache (Ned Wolpert)</para></listitem>
2068 <listitem><para>Remove query size limit (Hiroshi)</para></listitem>
2069 <listitem><para>Remove text field size limit (Hiroshi)</para></listitem>
2070 <listitem><para>Fix for SQLPrimaryKeys in multibyte mode (Hiroshi)</para></listitem>
2071 <listitem><para>Allow ODBC procedure calls (Hiroshi)</para></listitem>
2072 <listitem><para>Improve boolean handing (Aidan Mountford)</para></listitem>
2073 <listitem><para>Most configuration options now settable via DSN (Hiroshi)</para></listitem>
2074 <listitem><para>Multibyte, performance fixes (Hiroshi)</para></listitem>
2075 <listitem><para>Allow driver to be used with iODBC or unixODBC (Peter E)</para></listitem>
2076 <listitem><para>MD5 password encryption support (Bruce)</para></listitem>
2077 <listitem><para>Add more compatibility functions to odbc.sql (Peter E)</para></listitem>
2082 <title><application>ECPG</></title>
2084 <listitem><para>EXECUTE ... INTO implemented (Christof Petig)</para></listitem>
2085 <listitem><para>Multiple row descriptor support (e.g. CARDINALITY) (Christof Petig)</para></listitem>
2086 <listitem><para>Fix for GRANT parameters (Lee Kindness)</para></listitem>
2087 <listitem><para>Fix INITIALLY DEFERRED bug</para></listitem>
2088 <listitem><para>Various bug fixes (Michael, Christof Petig)</para></listitem>
2089 <listitem><para>Auto allocation for indicator variable arrays (int *ind_p=NULL)</para></listitem>
2090 <listitem><para>Auto allocation for string arrays (char **foo_pp=NULL)</para></listitem>
2091 <listitem><para>ECPGfree_auto_mem fixed</para></listitem>
2092 <listitem><para>All function names with external linkage are now prefixed by ECPG</para></listitem>
2093 <listitem><para>Fixes for arrays of structures (Michael)</para></listitem>
2098 <title>Misc. Interfaces</title>
2100 <listitem><para>Python fix fetchone() (Gerhard Haring)</para></listitem>
2101 <listitem><para>Use UTF, Unicode in Tcl where appropriate (Vsevolod Lobko, Reinhard Max)</para></listitem>
2102 <listitem><para>Add Tcl COPY TO/FROM (ljb)</para></listitem>
2103 <listitem><para>Prevent output of default index op class in <application/pg_dump/ (Tom)</para></listitem>
2104 <listitem><para>Fix libpgeasy memory leak (Bruce)</para></listitem>
2109 <title>Build and Install</title>
2111 <listitem><para>Configure, dynamic loader, and shared library fixes (Peter E)</para></listitem>
2112 <listitem><para>Fixes in QNX 4 port (Bernd Tegge)</para></listitem>
2113 <listitem><para>Fixes in Cygwin and Win32 ports (Jason Tishler, Gerhard Haring, Dmitry Yurtaev, Darko Prenosil, Mikhail Terekhov)</para></listitem>
2114 <listitem><para>Fix for Win32 socket communication failures (Magnus, Mikhail Terekhov)</para></listitem>
2115 <listitem><para>Hurd compile fix (Oliver Elphick)</para></listitem>
2116 <listitem><para>BeOS fixes (Cyril Velter)</para></listitem>
2117 <listitem><para>Remove configure --enable-unicode-conversion, now enabled by multibyte (Tatsuo)</para></listitem>
2118 <listitem><para>AIX fixes (Tatsuo, Andreas)</para></listitem>
2119 <listitem><para>Fix parallel make (Peter E)</para></listitem>
2120 <listitem><para>Install SQL language manual pages into OS-specific directories (Peter E)</para></listitem>
2121 <listitem><para>Rename config.h to pg_config.h (Peter E)</para></listitem>
2122 <listitem><para>Reorganize installation layout of header files (Peter E)</para></listitem>
2127 <title>Source Code</title>
2129 <listitem><para>Remove SEP_CHAR (Bruce)</para></listitem>
2130 <listitem><para>New GUC hooks (Tom)</para></listitem>
2131 <listitem><para>Merge GUC and command line handling (Marko Kreen)</para></listitem>
2132 <listitem><para>Remove EXTEND INDEX (Martijn van Oosterhout, Tom)</para></listitem>
2133 <listitem><para>New pgjindent utility to indent java code (Bruce)</para></listitem>
2134 <listitem><para>Remove define of true/false when compiling under C++ (Leandro Fanzone, Tom)</para></listitem>
2135 <listitem><para>pgindent fixes (Bruce, Tom)</para></listitem>
2136 <listitem><para>Replace strcasecmp() with strcmp() where appropriate (Peter E)</para></listitem>
2137 <listitem><para>Dynahash portability improvements (Tom)</para></listitem>
2138 <listitem><para>Add 'volatile' usage in spinlock structures</para></listitem>
2139 <listitem><para>Improve signal handling logic (Tom)</para></listitem>
2144 <title>Contrib</title>
2146 <listitem><para>New contrib/rtree_gist (Oleg Bartunov, Teodor Sigaev)</para></listitem>
2147 <listitem><para>New contrib/tsearch full-text indexing (Oleg, Teodor Sigaev)</para></listitem>
2148 <listitem><para>Add contrib/dblink for remote database access (Joe Conway)</para></listitem>
2149 <listitem><para>contrib/ora2pg Oracle conversion utility (Gilles Darold)</para></listitem>
2150 <listitem><para>contrib/xml XML conversion utility (John Gray)</para></listitem>
2151 <listitem><para>contrib/fulltextindex fixes (Christopher Kings-Lynne)</para></listitem>
2152 <listitem><para>New contrib/fuzzystrmatch with levenshtein and metaphone, soundex merged (Joe Conway)</para></listitem>
2153 <listitem><para>Add contrib/intarray boolean queries, binary search, fixes (Oleg Bartunov)</para></listitem>
2154 <listitem><para>New pg_upgrade utility (Bruce)</para></listitem>
2155 <listitem><para>Add new pg_resetxlog options (Bruce, Tom)</para></listitem>
2162 <sect1 id="release-7-1-3">
2163 <title>Release 7.1.3</title>
2166 <title>Release date</title>
2167 <simpara>2001-08-15</simpara>
2171 <title>Migration to version 7.1.3</title>
2174 A dump/restore is <emphasis>not</emphasis> required for those running
2180 <title>Changes</title>
2184 Remove unused WAL segements of large transactions (Tom)
2185 Multiaction rule fix (Tom)
2186 PL/pgSQL memory allocation fix (Jan)
2187 VACUUM buffer fix (Tom)
2188 Regression test fixes (Tom)
2189 pg_dump fixes for GRANT/REVOKE/comments on views, user-defined types (Tom)
2190 Fix subselects with DISTINCT ON or LIMIT (Tom)
2192 Disable COPY TO/FROM a view (Tom)
2193 Cygwin build (Jason Tishler)
2200 <sect1 id="release-7-1-2">
2201 <title>Release 7.1.2</title>
2204 <title>Release date</title>
2205 <simpara>2001-05-11</simpara>
2209 This has one fix from 7.1.1.
2214 <title>Migration to version 7.1.2</title>
2217 A dump/restore is <emphasis>not</emphasis> required for those running
2223 <title>Changes</title>
2227 Fix PL/pgSQL SELECTs when returning no rows
2228 Fix for psql backslash core dump
2229 Referential integrity permission fix
2238 <sect1 id="release-7-1-1">
2239 <title>Release 7.1.1</title>
2242 <title>Release date</title>
2243 <simpara>2001-05-05</simpara>
2247 This has a variety of fixes from 7.1.
2252 <title>Migration to version 7.1.1</title>
2255 A dump/restore is <emphasis>not</emphasis> required for those running
2261 <title>Changes</title>
2265 Fix for numeric MODULO operator (Tom)
2266 pg_dump fixes (Philip)
2267 pg_dump can dump 7.0 databases (Philip)
2268 readline 4.2 fixes (Peter E)
2270 AIX, MSWIN, VAX, N32K fixes (Tom)
2271 Multibytes fixes (Tom)
2272 Unicode fixes (Tatsuo)
2273 Optimizer improvements (Tom)
2274 Fix for whole tuples in functions (Tom)
2275 Fix for pg_ctl and option strings with spaces (Peter E)
2276 ODBC fixes (Hiroshi)
2277 EXTRACT can now take string argument (Thomas)
2278 Python fixes (Darcy)
2285 <sect1 id="release-7-1">
2286 <title>Release 7.1</title>
2289 <title>Release date</title>
2290 <simpara>2001-04-13</simpara>
2294 This release focuses on removing limitations that have existed in the
2295 PostgreSQL code for many years.
2299 Major changes in this release:
2304 Write-ahead Log (WAL)
2308 To maintain database consistency in case
2309 of an operating system crash, previous releases of PostgreSQL have
2310 forced all data modifications to disk before each transaction commit.
2311 With WAL, only one log file must be flushed to disk, greatly improving
2312 performance. If you have been using -F in previous releases to disable
2313 disk flushes, you may want to consider discontinuing its use.
2324 TOAST - Previous releases had a compiled-in row length limit,
2325 typically 8k - 32k. This limit made storage of long text fields
2326 difficult. With TOAST, long rows of any length can be stored with good
2338 We now support outer joins. The UNION/NOT IN
2339 workaround for outer joins is no longer required. We use the SQL92
2351 The previous C function manager did not
2352 handle null values properly, nor did it support 64-bit <acronym>CPU</acronym>'s (Alpha). The new
2353 function manager does. You can continue using your old custom
2354 functions, but you may want to rewrite them in the future to use the new
2355 function manager call interface.
2366 A large number of complex queries that were
2367 unsupported in previous releases now work. Many combinations of views,
2368 aggregates, UNION, LIMIT, cursors, subqueries, and inherited tables
2369 now work properly. Inherited tables are now accessed by default.
2370 Subqueries in FROM are now supported.
2379 <title>Migration to version 7.1</title>
2382 A dump/restore using pg_dump is required for those wishing to migrate
2383 data from any previous release.
2388 <title>Changes</title>
2394 Many multibyte/Unicode/locale fixes (Tatsuo and others)
2395 More reliable ALTER TABLE RENAME (Tom)
2396 Kerberos V fixes (David Wragg)
2397 Fix for INSERT INTO...SELECT where targetlist has subqueries (Tom)
2398 Prompt username/password on standard error (Bruce)
2399 Large objects inv_read/inv_write fixes (Tom)
2400 Fixes for to_char(), to_date(), to_ascii(), and to_timestamp() (Karel,
2402 Prevent query expressions from leaking memory (Tom)
2403 Allow UPDATE of arrays elements (Tom)
2404 Wake up lock waiters during cancel (Hiroshi)
2405 Fix rare cursor crash when using hash join (Tom)
2406 Fix for DROP TABLE/INDEX in rolled-back transaction (Hiroshi)
2407 Fix psql crash from \l+ if MULTIBYTE enabled (Peter E)
2408 Fix truncation of rule names during CREATE VIEW (Ross Reedstrom)
2409 Fix PL/perl (Alex Kapranoff)
2410 Disallow LOCK on views (Mark Hollomon)
2411 Disallow INSERT/UPDATE/DELETE on views (Mark Hollomon)
2412 Disallow DROP RULE, CREATE INDEX, TRUNCATE on views (Mark Hollomon)
2413 Allow PL/pgSQL accept non-ASCII identifiers (Tatsuo)
2414 Allow views to proper handle GROUP BY, aggregates, DISTINCT (Tom)
2415 Fix rare failure with TRUNCATE command (Tom)
2416 Allow UNION/INTERSECT/EXCEPT to be used with ALL, subqueries, views,
2417 DISTINCT, ORDER BY, SELECT...INTO (Tom)
2418 Fix parser failures during aborted transactions (Tom)
2419 Allow temporary relations to properly clean up indexes (Bruce)
2420 Fix VACUUM problem with moving rows in same page (Tom)
2421 Modify pg_dump to better handle user-defined items in template1 (Philip)
2422 Allow LIMIT in VIEW (Tom)
2423 Require cursor FETCH to honor LIMIT (Tom)
2424 Allow PRIMARY/FOREIGN Key definitions on inherited columns (Stephan)
2425 Allow ORDER BY, LIMIT in sub-selects (Tom)
2426 Allow UNION in CREATE RULE (Tom)
2427 Make ALTER/DROP TABLE rollback-able (Vadim, Tom)
2428 Store initdb collation in pg_control so collation cannot be changed (Tom)
2429 Fix INSERT...SELECT with rules (Tom)
2430 Fix FOR UPDATE inside views and subselects (Tom)
2431 Fix OVERLAPS operators conform to SQL92 spec regarding NULLs (Tom)
2432 Fix lpad() and rpad() to handle length less than input string (Tom)
2433 Fix use of NOTIFY in some rules (Tom)
2434 Overhaul btree code (Tom)
2435 Fix NOT NULL use in Pl/pgSQL variables (Tom)
2436 Overhaul GIST code (Oleg)
2437 Fix CLUSTER to preserve constraints and column default (Tom)
2438 Improved deadlock detection handling (Tom)
2439 Allow multiple SERIAL columns in a table (Tom)
2440 Prevent occasional index corruption (Vadim)
2444 Add OUTER JOINs (Tom)
2445 Function manager overhaul (Tom)
2446 Allow ALTER TABLE RENAME on indexes (Tom)
2447 Improve CLUSTER (Tom)
2448 Improve ps status display for more platforms (Peter E, Marc)
2449 Improve CREATE FUNCTION failure message (Ross)
2450 JDBC improvements (Peter, Travis Bauer, Christopher Cain, William Webber,
2452 Grand Unified Configuration scheme/GUC. Many options can now be set in
2453 data/postgresql.conf, postmaster/postgres flags, or SET commands (Peter E)
2454 Improved handling of file descriptor cache (Tom)
2455 New warning code about auto-created table alias entries (Bruce)
2456 Overhaul initdb process (Tom, Peter E)
2457 Overhaul of inherited tables; inherited tables now accessed by default;
2458 new ONLY keyword prevents it (Chris Bitmead, Tom)
2459 ODBC cleanups/improvements (Nick Gorham, Stephan Szabo, Zoltan Kovacs,
2461 Allow renaming of temp tables (Tom)
2462 Overhaul memory manager contexts (Tom)
2463 pg_dumpall uses CREATE USER or CREATE GROUP rather using COPY (Peter E)
2464 Overhaul pg_dump (Philip Warner)
2465 Allow pg_hba.conf secondary password file to specify only username (Peter E)
2466 Allow TEMPORARY or TEMP keyword when creating temporary tables (Bruce)
2467 New memory leak checker (Karel)
2468 New SET SESSION CHARACTERISTICS (Thomas)
2469 Allow nested block comments (Thomas)
2470 Add WITHOUT TIME ZONE type qualifier (Thomas)
2471 New ALTER TABLE ADD CONSTRAINT (Stephan)
2472 Use NUMERIC accumulators for INTEGER aggregates (Tom)
2473 Overhaul aggregate code (Tom)
2474 New VARIANCE and STDDEV() aggregates
2475 Improve dependency ordering of pg_dump (Philip)
2476 New pg_restore command (Philip)
2477 New pg_dump tar output option (Philip)
2478 New pg_dump of large objects (Philip)
2479 New ESCAPE option to LIKE (Thomas)
2480 New case-insensitive LIKE - ILIKE (Thomas)
2481 Allow functional indexes to use binary-compatible type (Tom)
2482 Allow SQL functions to be used in more contexts (Tom)
2483 New pg_config utility (Peter E)
2484 New PL/pgSQL EXECUTE command which allows dynamic SQL and utility statements
2486 New PL/pgSQL GET DIAGNOSTICS statement for SPI value access (Jan)
2487 New quote_identifiers() and quote_literal() functions (Jan)
2488 New ALTER TABLE table OWNER TO user command (Mark Hollomon)
2489 Allow subselects in FROM, i.e. FROM (SELECT ...) [AS] alias (Tom)
2490 Update PyGreSQL to version 3.1 (D'Arcy)
2491 Store tables as files named by OID (Vadim)
2492 New SQL function setval(seq,val,bool) for use in pg_dump (Philip)
2493 Require DROP VIEW to remove views, no DROP TABLE (Mark)
2494 Allow DROP VIEW view1, view2 (Mark)
2495 Allow multiple objects in DROP INDEX, DROP RULE, and DROP TYPE (Tom)
2496 Allow automatic conversion to/from Unicode (Tatsuo, Eiji)
2497 New /contrib/pgcrypto hashing functions (Marko Kreen)
2498 New pg_dumpall --globals-only option (Peter E)
2499 New CHECKPOINT command for WAL which creates new WAL log file (Vadim)
2500 New AT TIME ZONE syntax (Thomas)
2501 Allow location of Unix domain socket to be configurable (David J. MacKenzie)
2502 Allow postmaster to listen on a specific IP address (David J. MacKenzie)
2503 Allow socket path name to be specified in hostname by using leading slash
2504 (David J. MacKenzie)
2505 Allow CREATE DATABASE to specify template database (Tom)
2506 New utility to convert MySQL schema dumps to SQL92 and PostgreSQL (Thomas)
2507 New /contrib/rserv replication toolkit (Vadim)
2508 New file format for COPY BINARY (Tom)
2509 New /contrib/oid2name to map numeric files to table names (B Palmer)
2510 New "idle in transaction" ps status message (Marc)
2511 Update to pgaccess 0.98.7 (Constantin Teodorescu)
2512 pg_ctl now defaults to -w (wait) on shutdown, new -l (log) option
2513 Add rudimentary dependency checking to pg_dump (Philip)
2517 Fix INET/CIDR type ordering and add new functions (Tom)
2518 Make OID behave as an unsigned type (Tom)
2519 Allow BIGINT as synonym for INT8 (Peter E)
2520 New int2 and int8 comparison operators (Tom)
2521 New BIT and BIT VARYING types (Adriaan Joubert, Tom, Peter E)
2522 CHAR() no longer faster than VARCHAR() because of TOAST (Tom)
2523 New GIST seg/cube examples (Gene Selkov)
2524 Improved round(numeric) handling (Tom)
2525 Fix CIDR output formatting (Tom)
2526 New CIDR abbrev() function (Tom)
2530 Write-Ahead Log (WAL) to provide crash recovery with less performance
2532 ANALYZE stage of VACUUM no longer exclusively locks table (Bruce)
2533 Reduced file seeks (Denis Perchine)
2534 Improve BTREE code for duplicate keys (Tom)
2535 Store all large objects in a single table (Denis Perchine, Tom)
2536 Improve memory allocation performance (Karel, Tom)
2540 New function manager call conventions (Tom)
2541 SGI portability fixes (David Kaelbling)
2542 New configure --enable-syslog option (Peter E)
2543 New BSDI README (Bruce)
2544 configure script moved to top level, not /src (Peter E)
2545 Makefile/configuration/compilation overhaul (Peter E)
2546 New configure --with-python option (Peter E)
2547 Solaris cleanups (Peter E)
2548 Overhaul /contrib Makefiles (Karel)
2549 New OpenSSL configuration option (Magnus, Peter E)
2551 QNX fixes (Maurizio)
2552 New heap_open(), heap_openr() API (Tom)
2553 Remove colon and semi-colon operators (Thomas)
2554 New pg_class.relkind value for views (Mark Hollomon)
2555 Rename ichar() to chr() (Karel)
2556 New documentation for btrim(), ascii(), chr(), repeat() (Karel)
2557 Fixes for NT/Cygwin (Pete Forman)
2558 AIX port fixes (Andreas)
2559 New BeOS port (David Reid, Cyril Velter)
2560 Add proofreader's changes to docs (Addison-Wesley, Bruce)
2561 New Alpha spinlock code (Adriaan Joubert, Compaq)
2562 UnixWare port overhaul (Peter E)
2563 New Darwin/MacOS X port (Peter Bierman, Bruce Hartzler)
2564 New FreeBSD Alpha port (Alfred)
2565 Overhaul shared memory segments (Tom)
2566 Add IBM S/390 support (Neale Ferguson)
2567 Moved macmanuf to /contrib (Larry Rosenman)
2568 Syslog improvements (Larry Rosenman)
2569 New template0 database that contains no user additions (Tom)
2570 New /contrib/cube and /contrib/seg GIST sample code (Gene Selkov)
2571 Allow NetBSD's libedit instead of readline (Peter)
2572 Improved assembly language source code format (Bruce)
2573 New contrib/pg_logger
2574 New --template option to createdb
2575 New contrib/pg_control utility (Oliver)
2576 New FreeBSD tools ipc_check, start-scripts/freebsd
2583 <sect1 id="release-7-0-3">
2584 <title>Release 7.0.3</title>
2587 <title>Release date</title>
2588 <simpara>2000-11-11</simpara>
2592 This has a variety of fixes from 7.0.2.
2597 <title>Migration to version 7.0.3</title>
2600 A dump/restore is <emphasis>not</emphasis> required for those running
2606 <title>Changes</title>
2611 Large object fix (Tom)
2612 Fix lean in COPY WITH OIDS leak (Tom)
2613 Fix backwards-index-scan (Tom)
2614 Fix SELECT ... FOR UPDATE so it checks for duplicate keys (Hiroshi)
2615 Add --enable-syslog to configure (Marc)
2616 Fix abort transaction at backend exit in rare cases (Tom)
2617 Fix for psql \l+ when multibyte enabled (Tatsuo)
2618 Allow PL/pgSQL to accept non ascii identifiers (Tatsuo)
2619 Make vacuum always flush buffers (Tom)
2620 Fix to allow cancel while waiting for a lock (Hiroshi)
2621 Fix for memory aloocation problem in user authentication code (Tom)
2622 Remove bogus use of int4out() (Tom)
2623 Fixes for multiple subqueries in COALESCE or BETWEEN (Tom)
2624 Fix for failure of triggers on heap open in certain cases (Jeroen van
2626 Fix for erroneous selectivity of not-equals (Tom)
2627 Fix for erroneous use of strcmp() (Tom)
2628 Fix for bug where storage manager accesses items beyond end of file
2630 Fix to include kernel errno message in all smgr elog messages (Tom)
2631 Fix for '.' not in PATH at build time (SL Baur)
2632 Fix for out-of-file-descriptors error (Tom)
2633 Fix to make pg_dump dump 'iscachable' flag for functions (Tom)
2634 Fix for subselect in targetlist of Append node (Tom)
2635 Fix for mergejoin plans (Tom)
2636 Fix TRUNCATE failure on relations with indexes (Tom)
2637 Avoid database-wide restart on write error (Hiroshi)
2638 Fix nodeMaterial to honor chgParam by recomputing its output (Tom)
2639 Fix VACUUM problem with moving chain of update tuples when source and
2640 destination of a tuple lie on the same page (Tom)
2641 Fix user.c CommandCounterIncrement (Tom)
2642 Fix for AM/PM boundary problem in to_char() (Karel Zak)
2643 Fix TIME aggregate handling (Tom)
2644 Fix to_char() to avoid coredump on NULL input (Tom)
2646 Fix for inserting/copying longer multibyte strings into char() data
2648 Fix for crash of backend, on abort (Tom)
2655 <sect1 id="release-7-0-2">
2656 <title>Release 7.0.2</title>
2659 <title>Release date</title>
2660 <simpara>2000-06-05</simpara>
2664 This is a repackaging of 7.0.1 with added documentation.
2669 <title>Migration to version 7.0.2</title>
2672 A dump/restore is <emphasis>not</emphasis> required for those running
2678 <title>Changes</title>
2682 Added documentation to tarball.
2689 <sect1 id="release-7-0-1">
2690 <title>Release 7.0.1</title>
2693 <title>Release date</title>
2694 <simpara>2000-06-01</simpara>
2698 This is a cleanup release for 7.0.
2702 <title>Migration to version 7.0.1</title>
2705 A dump/restore is <emphasis>not</emphasis> required for those running
2711 <title>Changes</title>
2715 Fix many CLUSTER failures (Tom)
2716 Allow ALTER TABLE RENAME works on indexes (Tom)
2717 Fix plpgsql to handle datetime->timestamp and timespan->interval (Bruce)
2718 New configure --with-setproctitle switch to use setproctitle() (Marc, Bruce)
2719 Fix the off by one errors in ResultSet from 6.5.3, and more.
2720 jdbc ResultSet fixes (Joseph Shraibman)
2721 optimizer tunings (Tom)
2722 Fix create user for pgaccess
2723 Fix for UNLISTEN failure
2724 IRIX fixes (David Kaelbling)
2725 QNX fixes (Andreas Kardos)
2726 Reduce COPY IN lock level (Tom)
2727 Change libpqeasy to use PQconnectdb() style parameters (Bruce)
2728 Fix pg_dump to handle OID indexes (Tom)
2729 Fix small memory leak (Tom)
2730 Solaris fix for createdb/dropdb (Tatsuo)
2731 Fix for non-blocking connections (Alfred Perlstein)
2732 Fix improper recovery after RENAME TABLE failures (Tom)
2733 Copy pg_ident.conf.sample into /lib directory in install (Bruce)
2734 Add SJIS UDC (NEC selection IBM kanji) support (Eiji Tokuya)
2735 Fix too long syslog message (Tatsuo)
2736 Fix problem with quoted indexes that are too long (Tom)
2737 JDBC ResultSet.getTimestamp() fix (Gregory Krasnow & Floyd Marinescu)
2738 ecpg changes (Michael)
2744 <sect1 id="release-7-0">
2745 <title>Release 7.0</title>
2748 <title>Release date</title>
2749 <simpara>2000-05-08</simpara>
2753 This release contains improvements in many areas, demonstrating
2754 the continued growth of <productname>PostgreSQL</productname>.
2755 There are more improvements and fixes in 7.0 than in any previous
2756 release. The developers have confidence that this is the best
2757 release yet; we do our best to put out only solid releases, and
2758 this one is no exception.
2762 Major changes in this release:
2771 Foreign keys are now implemented, with the exception of PARTIAL MATCH
2772 foreign keys. Many users have been asking for this feature, and we are
2773 pleased to offer it.
2784 Continuing on work started a year ago, the optimizer has been
2785 improved, allowing better query plan selection and faster performance
2786 with less memory usage.
2793 Updated <application>psql</application>
2797 <application>psql</application>, our interactive terminal monitor, has been
2798 updated with a variety of new features. See the <application>psql</application> manual page for details.
2809 SQL92 join syntax is now supported, though only as
2810 <literal>INNER JOIN</> for this release. <literal>JOIN</>,
2811 <literal>NATURAL JOIN</>, <literal>JOIN</>/<literal>USING</>,
2812 and <literal>JOIN</>/<literal>ON</> are available, as are
2813 column correlation names.
2825 In 7.1 or 7.2, we plan to have outer joins, storage for very long rows, and a
2826 write-ahead logging system.
2835 <title>Migration to version 7.0</title>
2838 A dump/restore using <application>pg_dump</application>
2839 is required for those wishing to migrate data from any
2840 previous release of <productname>PostgreSQL</productname>.
2841 For those upgrading from 6.5.*, you may instead use
2842 <application>pg_upgrade</application> to upgrade to this
2843 release; however, a full dump/reload installation is always the
2844 most robust method for upgrades.
2848 Interface and compatibility issues to consider for the new
2854 The date/time types <type>datetime</type> and
2855 <type>timespan</type> have been superseded by the
2856 SQL92-defined types <type>timestamp</type> and
2857 <type>interval</type>. Although there has been some effort to
2858 ease the transition by allowing
2859 <productname>PostgreSQL</productname> to recognize
2860 the deprecated type names and translate them to the new type
2861 names, this mechanism may not be completely transparent to
2862 your existing application.
2868 The optimizer has been substantially improved in the area of
2869 query cost estimation. In some cases, this will result in
2870 decreased query times as the optimizer makes a better choice
2871 for the preferred plan. However, in a small number of cases,
2872 usually involving pathological distributions of data, your
2873 query times may go up. If you are dealing with large amounts
2874 of data, you may want to check your queries to verify
2881 The <acronym>JDBC</acronym> and <acronym>ODBC</acronym>
2882 interfaces have been upgraded and extended.
2888 The string function <function>CHAR_LENGTH</function> is now a
2889 native function. Previous versions translated this into a call
2890 to <function>LENGTH</function>, which could result in
2891 ambiguity with other types implementing
2892 <function>LENGTH</function> such as the geometric types.
2901 <title>Changes</title>
2907 Prevent function calls exceeding maximum number of arguments (Tom)
2908 Improve CASE construct (Tom)
2909 Fix SELECT coalesce(f1,0) FROM int4_tbl GROUP BY f1 (Tom)
2910 Fix SELECT sentence.words[0] FROM sentence GROUP BY sentence.words[0] (Tom)
2911 Fix GROUP BY scan bug (Tom)
2912 Improvements in SQL grammar processing (Tom)
2913 Fix for views involved in INSERT ... SELECT ... (Tom)
2914 Fix for SELECT a/2, a/2 FROM test_missing_target GROUP BY a/2 (Tom)
2915 Fix for subselects in INSERT ... SELECT (Tom)
2916 Prevent INSERT ... SELECT ... ORDER BY (Tom)
2917 Fixes for relations greater than 2GB, including vacuum
2918 Improve propagating system table changes to other backends (Tom)
2919 Improve propagating user table changes to other backends (Tom)
2920 Fix handling of temp tables in complex situations (Bruce, Tom)
2921 Allow table locking at table open, improving concurrent reliability (Tom)
2922 Properly quote sequence names in pg_dump (Ross J. Reedstrom)
2923 Prevent DROP DATABASE while others accessing
2924 Prevent any rows from being returned by GROUP BY if no rows processed (Tom)
2925 Fix SELECT COUNT(1) FROM table WHERE ...' if no rows matching WHERE (Tom)
2926 Fix pg_upgrade so it works for MVCC (Tom)
2927 Fix for SELECT ... WHERE x IN (SELECT ... HAVING SUM(x) > 1) (Tom)
2928 Fix for "f1 datetime DEFAULT 'now'" (Tom)
2929 Fix problems with CURRENT_DATE used in DEFAULT (Tom)
2930 Allow comment-only lines, and ;;; lines too. (Tom)
2931 Improve recovery after failed disk writes, disk full (Hiroshi)
2932 Fix cases where table is mentioned in FROM but not joined (Tom)
2933 Allow HAVING clause without aggregate functions (Tom)
2934 Fix for "--" comment and no trailing newline, as seen in perl interface
2935 Improve pg_dump failure error reports (Bruce)
2936 Allow sorts and hashes to exceed 2GB file sizes (Tom)
2937 Fix for pg_dump dumping of inherited rules (Tom)
2938 Fix for NULL handling comparisons (Tom)
2939 Fix inconsistent state caused by failed CREATE/DROP commands (Hiroshi)
2940 Fix for dbname with dash
2941 Prevent DROP INDEX from interfering with other backends (Tom)
2942 Fix file descriptor leak in verify_password()
2943 Fix for "Unable to identify an operator =$" problem
2944 Fix ODBC so no segfault if CommLog and Debug enabled (Dirk Niggemann)
2945 Fix for recursive exit call (Massimo)
2946 Fix for extra-long timezones (Jeroen van Vianen)
2947 Make pg_dump preserve primary key information (Peter E)
2948 Prevent databases with single quotes (Peter E)
2949 Prevent DROP DATABASE inside transaction (Peter E)
2950 ecpg memory leak fixes (Stephen Birch)
2951 Fix for SELECT null::text, SELECT int4fac(null) and SELECT 2 + (null) (Tom)
2952 Y2K timestamp fix (Massimo)
2953 Fix for VACUUM 'HEAP_MOVED_IN was not expected' errors (Tom)
2954 Fix for views with tables/columns containing spaces (Tom)
2955 Prevent permissions on indexes (Peter E)
2956 Fix for spinlock stuck problem when error is generated (Hiroshi)
2957 Fix ipcclean on Linux
2958 Fix handling of NULL constraint conditions (Tom)
2959 Fix memory leak in odbc driver (Nick Gorham)
2960 Fix for permission check on UNION tables (Tom)
2961 Fix to allow SELECT 'a' LIKE 'a' (Tom)
2962 Fix for SELECT 1 + NULL (Tom)
2964 Fix log() on numeric type (Tom)
2965 Deprecate ':' and ';' operators
2966 Allow vacuum of temporary tables
2967 Disallow inherited columns with the same name as new columns
2968 Recover or force failure when disk space is exhausted (Hiroshi)
2969 Fix INSERT INTO ... SELECT with AS columns matching result columns
2970 Fix INSERT ... SELECT ... GROUP BY groups by target columns not source columns (Tom)
2971 Fix CREATE TABLE test (a char(5) DEFAULT text '', b int4) with INSERT (Tom)
2972 Fix UNION with LIMIT
2973 Fix CREATE TABLE x AS SELECT 1 UNION SELECT 2
2974 Fix CREATE TABLE test(col char(2) DEFAULT user)
2975 Fix mismatched types in CREATE TABLE ... DEFAULT
2976 Fix SELECT * FROM pg_class where oid in (0,-1)
2977 Fix SELECT COUNT('asdf') FROM pg_class WHERE oid=12
2978 Prevent user who can create databases can modifying pg_database table (Peter E)
2979 Fix btree to give a useful elog when key > 1/2 (page - overhead) (Tom)
2980 Fix INSERT of 0.0 into DECIMAL(4,4) field (Tom)
2984 New CLI interface include file sqlcli.h, based on SQL3/SQL98
2985 Remove all limits on query length, row length limit still exists (Tom)
2986 Update jdbc protocol to 2.0 (Jens Glaser <email>jens@jens.de</email>)
2987 Add TRUNCATE command to quickly truncate relation (Mike Mascari)
2988 Fix to give super user and createdb user proper update catalog rights (Peter E)
2989 Allow ecpg bool variables to have NULL values (Christof)
2990 Issue ecpg error if NULL value for variable with no NULL indicator (Christof)
2991 Allow ^C to cancel COPY command (Massimo)
2992 Add SET FSYNC and SHOW PG_OPTIONS commands(Massimo)
2993 Function name overloading for dynamically-loaded C functions (Frankpitt)
2994 Add CmdTuples() to libpq++(Vince)
2995 New CREATE CONSTRAINT TRIGGER and SET CONSTRAINTS commands(Jan)
2996 Allow CREATE FUNCTION/WITH clause to be used for all language types
2997 configure --enable-debug adds -g (Peter E)
2998 configure --disable-debug removes -g (Peter E)
2999 Allow more complex default expressions (Tom)
3000 First real FOREIGN KEY constraint trigger functionality (Jan)
3001 Add FOREIGN KEY ... MATCH FULL ... ON DELETE CASCADE (Jan)
3002 Add FOREIGN KEY ... MATCH <unspecified> referential actions (Don Baccus)
3003 Allow WHERE restriction on ctid (physical heap location) (Hiroshi)
3004 Move pginterface from contrib to interface directory, rename to pgeasy (Bruce)
3005 Change pgeasy connectdb() parameter ordering (Bruce)
3006 Require SELECT DISTINCT target list to have all ORDER BY columns (Tom)
3007 Add Oracle's COMMENT ON command (Mike Mascari <email>mascarim@yahoo.com</email>)
3008 libpq's PQsetNoticeProcessor function now returns previous hook(Peter E)
3009 Prevent PQsetNoticeProcessor from being set to NULL (Peter E)
3010 Make USING in COPY optional (Bruce)
3011 Allow subselects in the target list (Tom)
3012 Allow subselects on the left side of comparison operators (Tom)
3013 New parallel regression test (Jan)
3014 Change backend-side COPY to write files with permissions 644 not 666 (Tom)
3015 Force permissions on PGDATA directory to be secure, even if it exists (Tom)
3016 Added psql LASTOID variable to return last inserted oid (Peter E)
3017 Allow concurrent vacuum and remove pg_vlock vacuum lock file (Tom)
3018 Add permissions check for vacuum (Peter E)
3019 New libpq functions to allow asynchronous connections: PQconnectStart(),
3020 PQconnectPoll(), PQresetStart(), PQresetPoll(), PQsetenvStart(),
3021 PQsetenvPoll(), PQsetenvAbort (Ewan Mellor)
3022 New libpq PQsetenv() function (Ewan Mellor)
3023 create/alter user extension (Peter E)
3024 New postmaster.pid and postmaster.opts under $PGDATA (Tatsuo)
3025 New scripts for create/drop user/db (Peter E)
3026 Major psql overhaul (Peter E)
3027 Add const to libpq interface (Peter E)
3028 New libpq function PQoidValue (Peter E)
3029 Show specific non-aggregate causing problem with GROUP BY (Tom)
3030 Make changes to pg_shadow recreate pg_pwd file (Peter E)
3031 Add aggregate(DISTINCT ...) (Tom)
3032 Allow flag to control COPY input/output of NULLs (Peter E)
3033 Make postgres user have a password by default (Peter E)
3034 Add CREATE/ALTER/DROP GROUP (Peter E)
3035 All administration scripts now support --long options (Peter E, Karel)
3036 Vacuumdb script now supports --all option (Peter E)
3037 ecpg new portable FETCH syntax
3038 Add ecpg EXEC SQL IFDEF, EXEC SQL IFNDEF, EXEC SQL ELSE, EXEC SQL ELIF
3039 and EXEC SQL ENDIF directives
3040 Add pg_ctl script to control backend start-up (Tatsuo)
3041 Add postmaster.opts.default file to store start-up flags (Tatsuo)
3042 Allow --with-mb=SQL_ASCII
3043 Increase maximum number of index keys to 16 (Bruce)
3044 Increase maximum number of function arguments to 16 (Bruce)
3045 Allow configuration of maximum number of index keys and arguments (Bruce)
3046 Allow unprivileged users to change their passwords (Peter E)
3047 Password authentication enabled; required for new users (Peter E)
3048 Disallow dropping a user who owns a database (Peter E)
3049 Change initdb option --with-mb to --enable-multibyte
3050 Add option for initdb to prompts for superuser password (Peter E)
3051 Allow complex type casts like col::numeric(9,2) and col::int2::float8 (Tom)
3052 Updated user interfaces on initdb, initlocation, pg_dump, ipcclean (Peter E)
3053 New pg_char_to_encoding() and pg_encoding_to_char() functions (Tatsuo)
3054 libpq non-blocking mode (Alfred Perlstein)
3055 Improve conversion of types in casts that don't specify a length
3056 New plperl internal programming language (Mark Hollomon)
3057 Allow COPY IN to read file that do not end with a newline (Tom)
3058 Indicate when long identifiers are truncated (Tom)
3059 Allow aggregates to use type equivalency (Peter E)
3060 Add Oracle's to_char(), to_date(), to_datetime(), to_timestamp(), to_number()
3061 conversion functions (Karel Zak <zakkr@zf.jcu.cz>)
3062 Add SELECT DISTINCT ON (expr [, expr ...]) targetlist ... (Tom)
3063 Check to be sure ORDER BY is compatible with the DISTINCT operation (Tom)
3064 Add NUMERIC and int8 types to ODBC
3065 Improve EXPLAIN results for Append, Group, Agg, Unique (Tom)
3066 Add ALTER TABLE ... ADD FOREIGN KEY (Stephan Szabo)
3067 Allow SELECT .. FOR UPDATE in PL/pgSQL (Hiroshi)
3068 Enable backward sequential scan even after reaching EOF (Hiroshi)
3069 Add btree indexing of boolean values, >= and <= (Don Baccus)
3070 Print current line number when COPY FROM fails (Massimo)
3071 Recognize POSIX time zone e.g. "PST+8" and "GMT-8" (Thomas)
3072 Add DEC as synonym for DECIMAL (Thomas)
3073 Add SESSION_USER as SQL92 keyword, same as CURRENT_USER (Thomas)
3074 Implement SQL92 column aliases (aka correlation names) (Thomas)
3075 Implement SQL92 join syntax (Thomas)
3076 Make INTERVAL reserved word allowed as a column identifier (Thomas)
3077 Implement REINDEX command (Hiroshi)
3078 Accept ALL in aggregate function SUM(ALL col) (Tom)
3079 Prevent GROUP BY from using column aliases (Tom)
3080 New psql \encoding option (Tatsuo)
3081 Allow PQrequestCancel() to terminate when in waiting-for-lock state (Hiroshi)
3082 Allow negation of a negative number in all cases
3083 Add ecpg descriptors (Christof, Michael)
3084 Allow CREATE VIEW v AS SELECT f1::char(8) FROM tbl
3085 Allow casts with length, like foo::char(8)
3086 New libpq functions PQsetClientEncoding(), PQclientEncoding() (Tatsuo)
3087 Add support for SJIS user defined characters (Tatsuo)
3088 Larger views/rules supported
3089 Make libpq's PQconndefaults() thread-safe (Tom)
3090 Disable // as comment to be ANSI conforming, should use -- (Tom)
3091 Allow column aliases on views CREATE VIEW name (collist)
3092 Fixes for views with subqueries (Tom)
3093 Allow UPDATE table SET fld = (SELECT ...) (Tom)
3094 SET command options no longer require quotes
3095 Update pgaccess to 0.98.6
3096 New SET SEED command
3097 New pg_options.sample file
3098 New SET FSYNC command (Massimo)
3099 Allow pg_descriptions when creating tables
3100 Allow pg_descriptions when creating types, columns, and functions
3101 Allow psql \copy to allow delimiters (Peter E)
3102 Allow psql to print nulls as distinct from "" [null] (Peter E)
3106 Many array fixes (Tom)
3107 Allow bare column names to be subscripted as arrays (Tom)
3108 Improve type casting of int and float constants (Tom)
3109 Cleanups for int8 inputs, range checking, and type conversion (Tom)
3110 Fix for SELECT timespan('21:11:26'::time) (Tom)
3111 netmask('x.x.x.x/0') is 255.255.255.255 instead of 0.0.0.0 (Oleg Sharoiko)
3112 Add btree index on NUMERIC (Jan)
3113 Perl fix for large objects containing NUL characters (Douglas Thomson)
3114 ODBC fix for for large objects (free)
3115 Fix indexing of cidr data type
3116 Fix for Ethernet MAC addresses (macaddr type) comparisons
3117 Fix for date/time types when overflows happened in computations (Tom)
3118 Allow array on int8 (Peter E)
3119 Fix for rounding/overflow of NUMERIC type, like NUMERIC(4,4) (Tom)
3120 Allow NUMERIC arrays
3121 Fix bugs in NUMERIC ceil() and floor() functions (Tom)
3122 Make char_length()/octet_length including trailing blanks (Tom)
3123 Made abstime/reltime use int4 instead of time_t (Peter E)
3124 New lztext data type for compressed text fields
3125 Revise code to handle coercion of int and float constants (Tom)
3126 Start at new code to implement a BIT and BIT VARYING type (Adriaan Joubert)
3127 NUMERIC now accepts scientific notation (Tom)
3128 NUMERIC to int4 rounds (Tom)
3129 Convert float4/8 to NUMERIC properly (Tom)
3130 Allow type conversion with NUMERIC (Thomas)
3131 Make ISO date style (2000-02-16 09:33) the default (Thomas)
3132 Add NATIONAL CHAR [ VARYING ] (Thomas)
3133 Allow NUMERIC round and trunc to accept negative scales (Tom)
3134 New TIME WITH TIME ZONE type (Thomas)
3135 Add MAX()/MIN() on time type (Thomas)
3136 Add abs(), mod(), fac() for int8 (Thomas)
3137 Rename functions to round(), sqrt(), cbrt(), pow() for float8 (Thomas)
3138 Add transcendental math functions (e.g. sin(), acos()) for float8 (Thomas)
3139 Add exp() and ln() for NUMERIC type
3140 Rename NUMERIC power() to pow() (Thomas)
3141 Improved TRANSLATE() function (Edwin Ramirez, Tom)
3142 Allow X=-Y operators (Tom)
3143 Allow SELECT float8(COUNT(*))/(SELECT COUNT(*) FROM t) FROM t GROUP BY f1; (Tom)
3144 Allow LOCALE to use indexes in regular expression searches (Tom)
3145 Allow creation of functional indexes to use default types
3149 Prevent exponential space consumption with many AND's and OR's (Tom)
3150 Collect attribute selectivity values for system columns (Tom)
3151 Reduce memory usage of aggregates (Tom)
3152 Fix for LIKE optimization to use indexes with multibyte encodings (Tom)
3153 Fix r-tree index optimizer selectivity (Thomas)
3154 Improve optimizer selectivity computations and functions (Tom)
3155 Optimize btree searching for cases where many equal keys exist (Tom)
3156 Enable fast LIKE index processing only if index present (Tom)
3157 Re-use free space on index pages with duplicates (Tom)
3158 Improve hash join processing (Tom)
3159 Prevent descending sort if result is already sorted(Hiroshi)
3160 Allow commuting of index scan query qualifications (Tom)
3161 Prefer index scans in cases where ORDER BY/GROUP BY is required (Tom)
3162 Allocate large memory requests in fix-sized chunks for performance (Tom)
3163 Fix vacuum's performance by reducing memory allocation requests (Tom)
3164 Implement constant-expression simplification (Bernard Frankpitt, Tom)
3165 Use secondary columns to be used to determine start of index scan (Hiroshi)
3166 Prevent quadruple use of disk space when doing internal sorting (Tom)
3167 Faster sorting by calling fewer functions (Tom)
3168 Create system indexes to match all system caches (Bruce, Hiroshi)
3169 Make system caches use system indexes (Bruce)
3170 Make all system indexes unique (Bruce)
3171 Improve pg_statistics management for VACUUM speed improvement (Tom)
3172 Flush backend cache less frequently (Tom, Hiroshi)
3173 COPY now reuses previous memory allocation, improving performance (Tom)
3174 Improve optimization cost estimation (Tom)
3175 Improve optimizer estimate of range queries x > lowbound AND x < highbound (Tom)
3176 Use DNF instead of CNF where appropriate (Tom, Taral)
3177 Further cleanup for OR-of-AND WHERE-clauses (Tom)
3178 Make use of index in OR clauses (x = 1 AND y = 2) OR (x = 2 AND y = 4) (Tom)
3179 Smarter optimizer computations for random index page access (Tom)
3180 New SET variable to control optimizer costs (Tom)
3181 Optimizer queries based on LIMIT, OFFSET, and EXISTS qualifications (Tom)
3182 Reduce optimizer internal housekeeping of join paths for speedup (Tom)
3183 Major subquery speedup (Tom)
3184 Fewer fsync writes when fsync is not disabled (Tom)
3185 Improved LIKE optimizer estimates (Tom)
3186 Prevent fsync in SELECT-only queries (Vadim)
3187 Make index creation use psort code, because it is now faster (Tom)
3188 Allow creation of sort temp tables > 1 Gig
3192 Fix for linux PPC compile
3193 New generic expression-tree-walker subroutine (Tom)
3194 Change form() to varargform() to prevent portability problems
3195 Improved range checking for large integers on Alphas
3196 Clean up #include in /include directory (Bruce)
3197 Add scripts for checking includes (Bruce)
3198 Remove un-needed #include's from *.c files (Bruce)
3199 Change #include's to use <> and "" as appropriate (Bruce)
3200 Enable WIN32 compilation of libpq
3201 Alpha spinlock fix from Uncle George <email>gatgul@voicenet.com</email>
3202 Overhaul of optimizer data structures (Tom)
3203 Fix to cygipc library (Yutaka Tanida)
3204 Allow pgsql to work on newer Cygwin snapshots (Dan)
3205 New catalog version number (Tom)
3207 Rename heap_replace to heap_update
3208 Update for QNX (Dr. Andreas Kardos)
3209 New platform-specific regression handling (Tom)
3210 Rename oid8 -> oidvector and int28 -> int2vector (Bruce)
3211 Included all yacc and lex files into the distribution (Peter E.)
3212 Remove lextest, no longer needed (Peter E)
3213 Fix for libpq and psql on Win32 (Magnus)
3214 Internally change datetime and timespan into timestamp and interval (Thomas)
3215 Fix for plpgsql on BSD/OS
3216 Add SQL_ASCII test case to the regression test (Tatsuo)
3217 configure --with-mb now deprecated (Tatsuo)
3219 NetBSD fixes (Johnny C. Lam <email>lamj@stat.cmu.edu</email>)
3220 Fixes for Alpha compiles
3221 New multibyte encodings
3227 <sect1 id="release-6-5-3">
3228 <title>Release 6.5.3</title>
3231 <title>Release date</title>
3232 <simpara>1999-10-13</simpara>
3236 This is basically a cleanup release for 6.5.2. We have added a new
3237 <application>PgAccess</> that was missing in 6.5.2, and installed an NT-specific fix.
3242 <title>Migration to version 6.5.3</title>
3245 A dump/restore is <emphasis>not</emphasis> required for those running
3250 <title>Changes</title>
3254 Updated version of pgaccess 0.98
3256 Fix dumping rules on inherited tables
3263 <sect1 id="release-6-5-2">
3264 <title>Release 6.5.2</title>
3267 <title>Release date</title>
3268 <simpara>1999-09-15</simpara>
3272 This is basically a cleanup release for 6.5.1. We have fixed a variety of
3273 problems reported by 6.5.1 users.
3278 <title>Migration to version 6.5.2</title>
3281 A dump/restore is <emphasis>not</emphasis> required for those running
3287 <title>Changes</title>
3291 subselect+CASE fixes(Tom)
3292 Add SHLIB_LINK setting for solaris_i386 and solaris_sparc ports(Daren Sefcik)
3293 Fixes for CASE in WHERE join clauses(Tom)
3294 Fix BTScan abort(Tom)
3295 Repair the check for redundant UNIQUE and PRIMARY KEY indexes(Thomas)
3296 Improve it so that it checks for multicolumn constraints(Thomas)
3297 Fix for Win32 making problem with MB enabled(Hiroki Kataoka)
3298 Allow BSD yacc and bison to compile pl code(Bruce)
3299 Fix SET NAMES working
3301 Fix vacuum's memory consumption(Hiroshi,Tatsuo)
3302 Reduce the total memory consumption of vacuum(Tom)
3303 Fix for timestamp(datetime)
3304 Rule deparsing bugfixes(Tom)
3305 Fix quoting problems in mkMakefile.tcldefs.sh.in and mkMakefile.tkdefs.sh.in(Tom)
3306 This is to re-use space on index pages freed by vacuum(Vadim)
3307 document -x for pg_dump(Bruce)
3308 Fix for unary operators in rule deparser(Tom)
3309 Comment out FileUnlink of excess segments during mdtruncate()(Tom)
3310 IRIX linking fix from Yu Cao >yucao@falcon.kla-tencor.com<
3311 Repair logic error in LIKE: should not return LIKE_ABORT
3312 when reach end of pattern before end of text(Tom)
3313 Repair incorrect cleanup of heap memory allocation during transaction abort(Tom)
3314 Updated version of pgaccess 0.98
3320 <sect1 id="release-6-5-1">
3321 <title>Release 6.5.1</title>
3324 <title>Release date</title>
3325 <simpara>1999-07-15</simpara>
3329 This is basically a cleanup release for 6.5. We have fixed a variety of
3330 problems reported by 6.5 users.
3334 <title>Migration to version 6.5.1</title>
3337 A dump/restore is <emphasis>not</emphasis> required for those running
3343 <title>Changes</title>
3348 Portability fixes for linux_ppc, IRIX, linux_alpha, OpenBSD, alpha
3349 Remove QUERY_LIMIT, use SELECT...LIMIT
3350 Fix for EXPLAIN on inheritance(Tom)
3351 Patch to allow vacuum on multisegment tables(Hiroshi)
3352 R-Tree optimizer selectivity fix(Tom)
3353 ACL file descriptor leak fix(Atsushi Ogawa)
3354 New expresssion subtree code(Tom)
3355 Avoid disk writes for read-only transactions(Vadim)
3356 Fix for removal of temp tables if last transaction was aborted(Bruce)
3357 Fix to prevent too large tuple from being created(Bruce)
3359 Allow port numbers 32k - 64k(Bruce)
3360 Add ^ precidence(Bruce)
3361 Rename sort files called pg_temp to pg_sorttemp(Bruce)
3362 Fix for microseconds in time values(Tom)
3363 Tutorial source cleanup
3365 Fix for sorting of NULL's in some cases(Tom)
3366 Shared library dependencies fixed (Tom)
3367 Fixed glitches affecting GROUP BY in subselects(Tom)
3368 Fix some compiler warnings (Tomoaki Nishiyama)
3369 Add Win1250 (Czech) support (Pavel Behal)
3375 <sect1 id="release-6-5">
3376 <title>Release 6.5</title>
3379 <title>Release date</title>
3380 <simpara>1999-06-09</simpara>
3384 This release marks a major step in the development team's mastery of the source
3385 code we inherited from Berkeley. You will see we are now easily adding
3386 major features, thanks to the increasing size and experience of our
3387 world-wide development team.
3391 Here is a brief summary of the more notable changes:
3396 Multiversion concurrency control(MVCC)
3400 This removes our old
3401 table-level locking, and replaces it with a locking system that is
3402 superior to most commercial database systems. In a traditional system,
3403 each row that is modified is locked until committed, preventing reads by
3404 other users. MVCC uses the natural multiversion nature of PostgreSQL
3405 to allow readers to continue reading consistent data during writer
3406 activity. Writers continue to use the compact pg_log transaction
3407 system. This is all performed without having to allocate a lock for
3408 every row like traditional database systems. So, basically, we no
3409 longer are restricted by simple table-level locking;
3410 we have something better than row-level locking.
3417 Hot backups from <application>pg_dump</application>
3421 <application>pg_dump</application> takes advantage of the new
3422 MVCC features to give a consistent database dump/backup while
3423 the database stays online and available for queries.
3434 We now have a true numeric data type, with
3435 user-specified precision.
3446 Temporary tables are guaranteed to have unique names
3447 within a database session, and are destroyed on session exit.
3458 We now have CASE, INTERSECT, and EXCEPT statement
3459 support. We have new LIMIT/OFFSET, SET TRANSACTION ISOLATION LEVEL,
3460 SELECT ... FOR UPDATE, and an improved LOCK TABLE command.
3471 We continue to speed up PostgreSQL, thanks to the variety of
3472 talents within our team. We have sped up memory allocation,
3473 optimization, table joins, and row transfer routines.
3484 We continue to expand our port list, this time including
3485 <systemitem class="osname">Windows NT</>/<systemitem>ix86</> and <systemitem class="osname">NetBSD</>/<systemitem>arm32</>.
3496 Most interfaces have new versions, and existing functionality
3508 New and updated material is present throughout the
3509 documentation. New <acronym>FAQ</acronym>s have been
3510 contributed for <systemitem class="osname">SGI</> and <systemitem class="osname">AIX</> platforms.
3511 The <citetitle>Tutorial</citetitle> has introductory information
3512 on <acronym>SQL</acronym> from Stefan Simkovics.
3513 For the <citetitle>User's Guide</citetitle>, there are
3514 reference pages covering the postmaster and more utility
3515 programs, and a new appendix
3516 contains details on date/time behavior.
3517 The <citetitle>Administrator's Guide</citetitle> has a new
3518 chapter on troubleshooting from Tom Lane.
3519 And the <citetitle>Programmer's Guide</citetitle> has a
3520 description of query processing, also from Stefan, and details
3521 on obtaining the <productname>PostgreSQL</productname> source
3522 tree via anonymous <productname>CVS</productname> and
3523 <productname>CVSup</productname>.
3531 <title>Migration to version 6.5</title>
3534 A dump/restore using <application>pg_dump</application>
3535 is required for those wishing to migrate data from any
3536 previous release of <productname>PostgreSQL</productname>.
3537 <application>pg_upgrade</application> can <emphasis>not</emphasis>
3538 be used to upgrade to this release because the on-disk structure
3539 of the tables has changed compared to previous releases.
3543 The new Multiversion Concurrency Control (MVCC) features can
3544 give somewhat different behaviors in multiuser
3545 environments. <emphasis>Read and understand the following section
3546 to ensure that your existing applications will give you the
3547 behavior you need.</emphasis>
3551 <title>Multiversion Concurrency Control</title>
3554 Because readers in 6.5 don't lock data, regardless of transaction
3555 isolation level, data read by one transaction can be overwritten by
3556 another. In other words, if a row is returned by
3557 <command>SELECT</command> it doesn't mean that this row really exists
3558 at the time it is returned (i.e. sometime after the statement or
3559 transaction began) nor that the row is protected from being deleted or
3560 updated by concurrent transactions before the current transaction does
3561 a commit or rollback.
3565 To ensure the actual existence of a row and protect it against
3566 concurrent updates one must use <command>SELECT FOR UPDATE</command> or
3567 an appropriate <command>LOCK TABLE</command> statement. This should be
3568 taken into account when porting applications from previous releases of
3569 <productname>PostgreSQL</productname> and other environments.
3573 Keep the above in mind if you are using
3574 <filename>contrib/refint.*</filename> triggers for
3575 referential integrity. Additional techniques are required now. One way is
3576 to use <command>LOCK parent_table IN SHARE ROW EXCLUSIVE MODE</command>
3577 command if a transaction is going to update/delete a primary key and
3578 use <command>LOCK parent_table IN SHARE MODE</command> command if a
3579 transaction is going to update/insert a foreign key.
3583 Note that if you run a transaction in SERIALIZABLE mode then you must
3584 execute the <command>LOCK</command> commands above before execution of any
3585 <acronym>DML</acronym> statement
3586 (<command>SELECT/INSERT/DELETE/UPDATE/FETCH/COPY_TO</command>) in the
3593 These inconveniences will disappear in the future
3594 when the ability to read dirty
3595 (uncommitted) data (regardless of isolation level) and true referential
3596 integrity will be implemented.
3602 <title>Changes</title>
3608 Fix text<->float8 and text<->float4 conversion functions(Thomas)
3609 Fix for creating tables with mixed-case constraints(Billy)
3610 Change exp()/pow() behavior to generate error on underflow/overflow(Jan)
3611 Fix bug in pg_dump -z
3612 Memory overrun cleanups(Tatsuo)
3613 Fix for lo_import crash(Tatsuo)
3614 Adjust handling of data type names to suppress double quotes(Thomas)
3615 Use type coercion for matching columns and DEFAULT(Thomas)
3616 Fix deadlock so it only checks once after one second of sleep(Bruce)
3617 Fixes for aggregates and PL/pgsql(Hiroshi)
3618 Fix for subquery crash(Vadim)
3619 Fix for libpq function PQfnumber and case-insensitive names(Bahman Rafatjoo)
3620 Fix for large object write-in-middle, no extra block, memory consumption(Tatsuo)
3621 Fix for pg_dump -d or -D and quote special characters in INSERT
3622 Repair serious problems with dynahash(Tom)
3623 Fix INET/CIDR portability problems
3624 Fix problem with selectivity error in ALTER TABLE ADD COLUMN(Bruce)
3625 Fix executor so mergejoin of different column types works(Tom)
3626 Fix for Alpha OR selectivity bug
3627 Fix OR index selectivity problem(Bruce)
3628 Fix so \d shows proper length for char()/varchar()(Ryan)
3629 Fix tutorial code(Clark)
3630 Improve destroyuser checking(Oliver)
3631 Fix for Kerberos(Rodney McDuff)
3632 Fix for dropping database while dirty buffers(Bruce)
3633 Fix so sequence nextval() can be case-sensitive(Bruce)
3635 Drop buffers before destroying database files(Bruce)
3636 Fix case where executor evaluates functions twice(Tatsuo)
3637 Allow sequence nextval actions to be case-sensitive(Bruce)
3638 Fix optimizer indexing not working for negative numbers(Bruce)
3639 Fix for memory leak in executor with fjIsNull
3640 Fix for aggregate memory leaks(Erik Riedel)
3641 Allow username containing a dash GRANT permissions
3642 Cleanup of NULL in inet types
3643 Clean up system table bugs(Tom)
3644 Fix problems of PAGER and \? command(Masaaki Sakaida)
3645 Reduce default multisegment file size limit to 1GB(Peter)
3646 Fix for dumping of CREATE OPERATOR(Tom)
3647 Fix for backward scanning of cursors(Hiroshi Inoue)
3648 Fix for COPY FROM STDIN when using \i(Tom)
3649 Fix for subselect is compared inside an expression(Jan)
3650 Fix handling of error reporting while returning rows(Tom)
3651 Fix problems with reference to array types(Tom,Jan)
3652 Prevent UPDATE SET oid(Jan)
3653 Fix pg_dump so -t option can handle case-sensitive tablenames
3654 Fixes for GROUP BY in special cases(Tom, Jan)
3655 Fix for memory leak in failed queries(Tom)
3656 DEFAULT now supports mixed-case identifiers(Tom)
3657 Fix for multisegment uses of DROP/RENAME table, indexes(Ole Gjerde)
3658 Disable use of pg_dump with both -o and -d options(Bruce)
3659 Allow pg_dump to properly dump GROUP permissions(Bruce)
3660 Fix GROUP BY in INSERT INTO table SELECT * FROM table2(Jan)
3661 Fix for computations in views(Jan)
3662 Fix for aggregates on array indexes(Tom)
3663 Fix for DEFAULT handles single quotes in value requiring too many quotes
3664 Fix security problem with non-super users importing/exporting large objects(Tom)
3665 Rollback of transaction that creates table cleaned up properly(Tom)
3666 Fix to allow long table and column names to generate proper serial names(Tom)
3670 Add "vacuumdb" utility
3671 Speed up libpq by allocating memory better(Tom)
3672 EXPLAIN all indexes used(Tom)
3673 Implement CASE, COALESCE, NULLIF expression(Thomas)
3674 New pg_dump table output format(Constantin)
3675 Add string min()/max() functions(Thomas)
3676 Extend new type coercion techniques to aggregates(Thomas)
3677 New moddatetime contrib(Terry)
3678 Update to pgaccess 0.96(Constantin)
3679 Add routines for single-byte "char" type(Thomas)
3680 Improved substr() function(Thomas)
3681 Improved multibyte handling(Tatsuo)
3682 Multiversion concurrency control/MVCC(Vadim)
3683 New Serialized mode(Vadim)
3684 Fix for tables over 2gigs(Peter)
3685 New SET TRANSACTION ISOLATION LEVEL(Vadim)
3686 New LOCK TABLE IN ... MODE(Vadim)
3687 Update ODBC driver(Byron)
3688 New NUMERIC data type(Jan)
3689 New SELECT FOR UPDATE(Vadim)
3690 Handle "NaN" and "Infinity" for input values(Jan)
3691 Improved date/year handling(Thomas)
3692 Improved handling of backend connections(Magnus)
3693 New options ELOG_TIMESTAMPS and USE_SYSLOG options for log files(Massimo)
3694 New TCL_ARRAYS option(Massimo)
3695 New INTERSECT and EXCEPT(Stefan)
3696 New pg_index.indisprimary for primary key tracking(D'Arcy)
3697 New pg_dump option to allow dropping of tables before creation(Brook)
3698 Speedup of row output routines(Tom)
3699 New READ COMMITTED isolation level(Vadim)
3700 New TEMP tables/indexes(Bruce)
3701 Prevent sorting if result is already sorted(Jan)
3702 New memory allocation optimization(Jan)
3703 Allow psql to do \p\g(Bruce)
3704 Allow multiple rule actions(Jan)
3705 Added LIMIT/OFFSET functionality(Jan)
3706 Improve optimizer when joining a large number of tables(Bruce)
3707 New intro to SQL from S. Simkovics' Master's Thesis (Stefan, Thomas)
3708 New intro to backend processing from S. Simkovics' Master's Thesis (Stefan)
3709 Improved int8 support(Ryan Bradetich, Thomas, Tom)
3710 New routines to convert between int8 and text/varchar types(Thomas)
3711 New bushy plans, where meta-tables are joined(Bruce)
3712 Enable right-hand queries by default(Bruce)
3713 Allow reliable maximum number of backends to be set at configure time
3714 (--with-maxbackends and postmaster switch (-N backends))(Tom)
3715 GEQO default now 10 tables because of optimizer speedups(Tom)
3716 Allow NULL=Var for MS-SQL portability(Michael, Bruce)
3717 Modify contrib check_primary_key() so either "automatic" or "dependent"(Anand)
3718 Allow psql \d on a view show query(Ryan)
3719 Speedup for LIKE(Bruce)
3720 Ecpg fixes/features, see src/interfaces/ecpg/ChangeLog file(Michael)
3721 JDBC fixes/features, see src/interfaces/jdbc/CHANGELOG(Peter)
3722 Make % operator have precedence like /(Bruce)
3723 Add new postgres -O option to allow system table structure changes(Bruce)
3724 Update contrib/pginterface/findoidjoins script(Tom)
3725 Major speedup in vacuum of deleted rows with indexes(Vadim)
3726 Allow non-SQL functions to run different versions based on arguments(Tom)
3727 Add -E option that shows actual queries sent by \dt and friends(Masaaki Sakaida)
3728 Add version number in start-up banners for psql(Masaaki Sakaida)
3729 New contrib/vacuumlo removes large objects not referenced(Peter)
3730 New initialization for table sizes so non-vacuumed tables perform better(Tom)
3731 Improve error messages when a connection is rejected(Tom)
3732 Support for arrays of char() and varchar() fields(Massimo)
3733 Overhaul of hash code to increase reliability and performance(Tom)
3734 Update to PyGreSQL 2.4(D'Arcy)
3735 Changed debug options so -d4 and -d5 produce different node displays(Jan)
3736 New pg_options: pretty_plan, pretty_parse, pretty_rewritten(Jan)
3737 Better optimization statistics for system table access(Tom)
3738 Better handling of non-default block sizes(Massimo)
3739 Improve GEQO optimizer memory consumption(Tom)
3740 UNION now suppports ORDER BY of columns not in target list(Jan)
3741 Major libpq++ improvements(Vince Vielhaber)
3742 pg_dump now uses -z(ACL's) as default(Bruce)
3743 backend cache, memory speedups(Tom)
3744 have pg_dump do everything in one snapshot transaction(Vadim)
3745 fix for large object memory leakage, fix for pg_dumping(Tom)
3746 INET type now respects netmask for comparisons
3747 Make VACUUM ANALYZE only use a readlock(Vadim)
3748 Allow VIEWs on UNIONS(Jan)
3749 pg_dump now can generate consistent snapshots on active databases(Vadim)
3753 Improve port matching(Tom)
3754 Portability fixes for SunOS
3755 Add NT/Win32 backend port and enable dynamic loading(Magnus and Daniel Horak)
3756 New port to Cobalt Qube(Mips) running Linux(Tatsuo)
3757 Port to NetBSD/m68k(Mr. Mutsuki Nakajima)
3758 Port to NetBSD/sun3(Mr. Mutsuki Nakajima)
3759 Port to NetBSD/macppc(Toshimi Aoki)
3760 Fix for tcl/tk configuration(Vince)
3761 Removed CURRENT keyword for rule queries(Jan)
3762 NT dynamic loading now works(Daniel Horak)
3763 Add ARM32 support(Andrew McMurry)
3764 Better support for HP-UX 11 and UnixWare
3765 Improve file handling to be more uniform, prevent file descriptor leak(Tom)
3766 New install commands for plpgsql(Jan)
3773 <sect1 id="release-6-4-2">
3774 <title>Release 6.4.2</title>
3777 <title>Release date</title>
3778 <simpara>1998-12-20</simpara>
3782 The 6.4.1 release was improperly packaged. This also has one additional
3788 <title>Migration to version 6.4.2</title>
3791 A dump/restore is <emphasis>not</emphasis> required for those running
3796 <title>Changes</title>
3800 Fix for datetime constant problem on some platforms(Thomas)
3808 <sect1 id="release-6-4-1">
3809 <title>Release 6.4.1</title>
3812 <title>Release date</title>
3813 <simpara>1998-12-18</simpara>
3817 This is basically a cleanup release for 6.4. We have fixed a variety of
3818 problems reported by 6.4 users.
3823 <title>Migration to version 6.4.1</title>
3826 A dump/restore is <emphasis>not</emphasis> required for those running
3831 <title>Changes</title>
3835 Add pg_dump -N flag to force double quotes around identifiers. This is
3837 Fix for NOT in where clause causing crash(Bruce)
3838 EXPLAIN VERBOSE coredump fix(Vadim)
3839 Fix shared-library problems on Linux
3840 Fix test for table existence to allow mixed-case and whitespace in
3841 the table name(Thomas)
3842 Fix a couple of pg_dump bugs
3843 Configure matches template/.similar entries better(Tom)
3844 Change builtin function names from SPI_* to spi_*
3845 OR WHERE clause fix(Vadim)
3846 Fixes for mixed-case table names(Billy)
3847 contrib/linux/postgres.init.csh/sh fix(Thomas)
3848 libpq memory overrun fix
3850 Change exp() behavior to generate error on underflow(Thomas)
3851 pg_dump fixes for memory leak, inheritance constraints, layout change
3852 update pgaccess to 0.93
3853 Fix prototype for 64-bit platforms
3854 Multibyte fixes(Tatsuo)
3856 Fix memory overruns(Tatsuo)
3857 Fix for lo_import() crash(Bruce)
3858 Better search for install program(Tom)
3861 Use implicit type coercion for matching DEFAULT values(Thomas)
3862 Add routines to help with single-byte (internal) character type(Thomas)
3863 Compilation of libpq for Win32 fixes(Magnus)
3864 Upgrade to PyGreSQL 2.2(D'Arcy)
3872 <sect1 id="release-6-4">
3873 <title>Release 6.4</title>
3876 <title>Release date</title>
3877 <simpara>1998-10-30</simpara>
3881 There are <emphasis>many</emphasis> new features and improvements in this release.
3882 Thanks to our developers and maintainers, nearly every aspect of the system
3883 has received some attention since the previous release.
3884 Here is a brief, incomplete summary:
3889 Views and rules are now functional thanks to extensive new code in the
3890 rewrite rules system from Jan Wieck. He also wrote a chapter on it
3891 for the <citetitle>Programmer's Guide</citetitle>.
3896 Jan also contributed a second procedural language, <application>PL/pgSQL</application>, to go with the
3897 original <application>PL/pgTCL</application> procedural language he contributed last release.
3903 We have optional multiple-byte character set support from Tatsuo Ishii
3904 to complement our existing locale support.
3910 Client/server communications has been cleaned up, with better support for
3911 asynchronous messages and interrupts thanks to Tom Lane.
3917 The parser will now perform automatic type coercion to match arguments
3918 to available operators and functions, and to match columns and expressions
3919 with target columns. This uses a generic mechanism which supports
3920 the type extensibility features of <productname>PostgreSQL</productname>.
3921 There is a new chapter in the <citetitle>User's Guide</citetitle>
3922 which covers this topic.
3928 Three new data types have been added.
3929 Two types, <type>inet</type> and <type>cidr</type>, support various forms
3930 of IP network, subnet, and machine addressing. There is now an 8-byte integer
3931 type available on some platforms. See the chapter on data types
3932 in the <citetitle>User's Guide</citetitle> for details.
3933 A fourth type, <type>serial</type>, is now supported by the parser as an
3934 amalgam of the <type>int4</type> type, a sequence, and a unique index.
3940 Several more <acronym>SQL92</acronym>-compatible syntax features have been
3941 added, including <command>INSERT DEFAULT VALUES</command>
3947 The automatic configuration and installation system has received some
3948 attention, and should be more robust for more platforms than it has ever
3957 <title>Migration to version 6.4</title>
3960 A dump/restore using <application>pg_dump</application>
3961 or <application>pg_dumpall</application>
3962 is required for those wishing to migrate data from any
3963 previous release of <productname>PostgreSQL</productname>.
3968 <title>Changes</title>
3974 Fix for a tiny memory leak in PQsetdb/PQfinish(Bryan)
3975 Remove char2-16 data types, use char/varchar(Darren)
3976 Pqfn not handles a NOTICE message(Anders)
3977 Reduced busywaiting overhead for spinlocks with many backends (dg)
3978 Stuck spinlock detection (dg)
3979 Fix up "ISO-style" timespan decoding and encoding(Thomas)
3980 Fix problem with table drop after rollback of transaction(Vadim)
3981 Change error message and remove non-functional update message(Vadim)
3982 Fix for COPY array checking
3983 Fix for SELECT 1 UNION SELECT NULL
3984 Fix for buffer leaks in large object calls(Pascal)
3985 Change owner from oid to int4 type(Bruce)
3986 Fix a bug in the oracle compatibility functions btrim() ltrim() and rtrim()
3987 Fix for shared invalidation cache overflow(Massimo)
3988 Prevent file descriptor leaks in failed COPY's(Bruce)
3989 Fix memory leak in libpgtcl's pg_select(Constantin)
3990 Fix problems with username/passwords over 8 characters(Tom)
3991 Fix problems with handling of asynchronous NOTIFY in backend(Tom)
3992 Fix of many bad system table entries(Tom)
3996 Upgrade ecpg and ecpglib,see src/interfaces/ecpc/ChangeLog(Michael)
3997 Show the index used in an EXPLAIN(Zeugswetter)
3998 EXPLAIN invokes rule system and shows plan(s) for rewritten queries(Jan)
3999 Multibyte awareness of many data types and functions, via configure(Tatsuo)
4000 New configure --with-mb option(Tatsuo)
4001 New initdb --pgencoding option(Tatsuo)
4002 New createdb -E multibyte option(Tatsuo)
4003 Select version(); now returns PostgreSQL version(Jeroen)
4004 libpq now allows asynchronous clients(Tom)
4005 Allow cancel from client of backend query(Tom)
4006 psql now cancels query with Control-C(Tom)
4007 libpq users need not issue dummy queries to get NOTIFY messages(Tom)
4008 NOTIFY now sends sender's PID, so you can tell whether it was your own(Tom)
4009 PGresult struct now includes associated error message, if any(Tom)
4010 Define "tz_hour" and "tz_minute" arguments to date_part()(Thomas)
4011 Add routines to convert between varchar and bpchar(Thomas)
4012 Add routines to allow sizing of varchar and bpchar into target columns(Thomas)
4013 Add bit flags to support timezonehour and minute in data retrieval(Thomas)
4014 Allow more variations on valid floating point numbers (e.g. ".1", "1e6")(Thomas)
4015 Fixes for unary minus parsing with leading spaces(Thomas)
4016 Implement TIMEZONE_HOUR, TIMEZONE_MINUTE per SQL92 specs(Thomas)
4017 Check for and properly ignore FOREIGN KEY column constraints(Thomas)
4018 Define USER as synonym for CURRENT_USER per SQL92 specs(Thomas)
4019 Enable HAVING clause but no fixes elsewhere yet.
4020 Make "char" type a synonym for "char(1)" (actually implemented as bpchar)(Thomas)
4021 Save string type if specified for DEFAULT clause handling(Thomas)
4022 Coerce operations involving different data types(Thomas)
4023 Allow some index use for columns of different types(Thomas)
4024 Add capabilities for automatic type conversion(Thomas)
4025 Cleanups for large objects, so file is truncated on open(Peter)
4026 Readline cleanups(Tom)
4027 Allow psql \f \ to make spaces as delimiter(Bruce)
4028 Pass pg_attribute.atttypmod to the frontend for column field lengths(Tom,Bruce)
4029 Msql compatibility library in /contrib(Aldrin)
4030 Remove the requirement that ORDER/GROUP BY clause identifiers be
4031 included in the target list(David)
4032 Convert columns to match columns in UNION clauses(Thomas)
4033 Remove fork()/exec() and only do fork()(Bruce)
4034 Jdbc cleanups(Peter)
4035 Show backend status on ps command line(only works on some platforms)(Bruce)
4036 Pg_hba.conf now has a sameuser option in the database field
4037 Make lo_unlink take oid param, not int4
4038 New DISABLE_COMPLEX_MACRO for compilers that can't handle our macros(Bruce)
4039 Libpgtcl now handles NOTIFY as a Tcl event, need not send dummy queries(Tom)
4040 libpgtcl cleanups(Tom)
4041 Add -error option to libpgtcl's pg_result command(Tom)
4042 New locale patch, see docs/README/locale(Oleg)
4043 Fix for pg_dump so CONSTRAINT and CHECK syntax is correct(ccb)
4044 New contrib/lo code for large object orphan removal(Peter)
4045 New psql command "SET CLIENT_ENCODING TO 'encoding'" for multibytes
4046 feature, see /doc/README.mb(Tatsuo)
4047 /contrib/noupdate code to revoke update permission on a column
4048 libpq can now be compiled on win32(Magnus)
4049 Add PQsetdbLogin() in libpq
4050 New 8-byte integer type, checked by configure for OS support(Thomas)
4051 Better support for quoted table/column names(Thomas)
4052 Surround table and column names with double-quotes in pg_dump(Thomas)
4053 PQreset() now works with passwords(Tom)
4054 Handle case of GROUP BY target list column number out of range(David)
4055 Allow UNION in subselects
4056 Add auto-size to screen to \d? commands(Bruce)
4057 Use UNION to show all \d? results in one query(Bruce)
4058 Add \d? field search feature(Bruce)
4059 Pg_dump issues fewer \connect requests(Tom)
4060 Make pg_dump -z flag work better, document it in manual page(Tom)
4061 Add HAVING clause with full support for subselects and unions(Stephan)
4062 Full text indexing routines in contrib/fulltextindex(Maarten)
4063 Transaction ids now stored in shared memory(Vadim)
4064 New PGCLIENTENCODING when issuing COPY command(Tatsuo)
4065 Support for SQL92 syntax "SET NAMES"(Tatsuo)
4066 Support for LATIN2-5(Tatsuo)
4067 Add UNICODE regression test case(Tatsuo)
4068 Lock manager cleanup, new locking modes for LLL(Vadim)
4069 Allow index use with OR clauses(Bruce)
4070 Allows "SELECT NULL ORDER BY 1;"
4071 Explain VERBOSE prints the plan, and now pretty-prints the plan to
4072 the postmaster log file(Bruce)
4073 Add indexes display to \d command(Bruce)
4074 Allow GROUP BY on functions(David)
4075 New pg_class.relkind for large objects(Bruce)
4076 New way to send libpq NOTICE messages to a different location(Tom)
4077 New \w write command to psql(Bruce)
4078 New /contrib/findoidjoins scans oid columns to find join relationships(Bruce)
4079 Allow binary-compatible indexes to be considered when checking for valid
4080 Indexes for restriction clauses containing a constant(Thomas)
4081 New ISBN/ISSN code in /contrib/isbn_issn
4082 Allow NOT LIKE, IN, NOT IN, BETWEEN, and NOT BETWEEN constraint(Thomas)
4083 New rewrite system fixes many problems with rules and views(Jan)
4084 * Rules on relations work
4085 * Event qualifications on insert/update/delete work
4086 * New OLD variable to reference CURRENT, CURRENT will be remove in future
4087 * Update rules can reference NEW and OLD in rule qualifications/actions
4088 * Insert/update/delete rules on views work
4089 * Multiple rule actions are now supported, surrounded by parentheses
4090 * Regular users can create views/rules on tables they have RULE permits
4091 * Rules and views inherit the permissions on the creator
4092 * No rules at the column level
4093 * No UPDATE NEW/OLD rules
4094 * New pg_tables, pg_indexes, pg_rules and pg_views system views
4095 * Only a single action on SELECT rules
4096 * Total rewrite overhaul, perhaps for 6.5
4098 * handle aggregates on views
4099 * handle insert into select from view works
4100 System indexes are now multikey(Bruce)
4101 Oidint2, oidint4, and oidname types are removed(Bruce)
4102 Use system cache for more system table lookups(Bruce)
4103 New backend programming language PL/pgSQL in backend/pl(Jan)
4104 New SERIAL data type, auto-creates sequence/index(Thomas)
4105 Enable assert checking without a recompile(Massimo)
4106 User lock enhancements(Massimo)
4107 New setval() command to set sequence value(Massimo)
4108 Auto-remove unix socket file on start-up if no postmaster running(Massimo)
4109 Conditional trace package(Massimo)
4110 New UNLISTEN command(Massimo)
4111 psql and libpq now compile under win32 using win32.mak(Magnus)
4112 Lo_read no longer stores trailing NULL(Bruce)
4113 Identifiers are now truncated to 31 characters internally(Bruce)
4114 Createuser options now availble on the command line
4115 Code for 64-bit integer supported added, configure tested, int8 type(Thomas)
4116 Prevent file descriptor leaf from failed COPY(Bruce)
4117 New pg_upgrade command(Bruce)
4118 Updated /contrib directories(Massimo)
4119 New CREATE TABLE DEFAULT VALUES statement available(Thomas)
4120 New INSERT INTO TABLE DEFAULT VALUES statement available(Thomas)
4121 New DECLARE and FETCH feature(Thomas)
4122 libpq's internal structures now not exported(Tom)
4123 Allow up to 8 key indexes(Bruce)
4124 Remove ARCHIVE keyword, that is no longer used(Thomas)
4125 pg_dump -n flag to supress quotes around indentifiers
4126 disable system columns for views(Jan)
4127 new INET and CIDR types for network addresses(TomH, Paul)
4128 no more double quotes in psql output
4129 pg_dump now dumps views(Terry)
4130 new SET QUERY_LIMIT(Tatsuo,Jan)
4134 /contrib cleanup(Jun)
4135 Inline some small functions called for every row(Bruce)
4138 Multibyte regression tests(Soonmyung.)
4139 Remove --disabled options from configure
4140 Define PGDOC to use POSTGRESDIR by default
4141 Make regression optional
4142 Remove extra braces code to pgindent(Bruce)
4143 Add bsdi shared library support(Bruce)
4144 New --without-CXX support configure option(Brook)
4146 Update backend flowchart in tools/backend(Bruce)
4147 Change atttypmod from int16 to int32(Bruce, Tom)
4148 Getrusage() fix for platforms that do not have it(Tom)
4149 Add PQconnectdb, PGUSER, PGPASSWORD to libpq man page
4150 NS32K platform fixes(Phil Nelson, John Buller)
4151 SCO 7/UnixWare 2.x fixes(Billy,others)
4152 Sparc/Solaris 2.5 fixes(Ryan)
4153 Pgbuiltin.3 is obsolete, move to doc files(Thomas)
4154 Even more documention(Thomas)
4155 Nextstep support(Jacek)
4157 pginterface manual page(Bruce)
4158 shared libraries all have version numbers
4159 merged all OS-specific shared library defines into one file
4160 smarter TCL/TK configuration checking(Billy)
4161 smarter perl configuration(Brook)
4162 configure uses supplied install-sh if no install script found(Tom)
4163 new Makefile.shlib for shared library configuration(Tom)
4169 <sect1 id="release-6-3-2">
4170 <title>Release 6.3.2</title>
4173 <title>Release date</title>
4174 <simpara>1998-04-07</simpara>
4178 This is a bug-fix release for 6.3.x.
4179 Refer to the release notes for version 6.3 for a more complete summary of new features.
4187 Repairs automatic configuration support for some platforms, including Linux,
4188 from breakage inadvertently introduced in version 6.3.1.
4194 Correctly handles function calls on the left side of BETWEEN and LIKE clauses.
4201 A dump/restore is NOT required for those running 6.3 or 6.3.1. A
4202 <literal>make distclean</>, <literal>make</>, and <literal>make install</> is all that is required.
4203 This last step should be performed while the postmaster is not running.
4204 You should re-link any custom applications that use <productname>PostgreSQL</productname> libraries.
4207 For upgrades from pre-6.3 installations,
4208 refer to the installation and migration instructions for version 6.3.
4212 <title>Changes</title>
4216 Configure detection improvements for tcl/tk(Brook Milligan, Alvin)
4217 Manual page improvements(Bruce)
4218 BETWEEN and LIKE fix(Thomas)
4219 fix for psql \connect used by pg_dump(Oliver Elphick)
4221 pgaccess, version 0.86
4222 qsort removed, now uses libc version, cleanups(Jeroen)
4223 fix for buffer over-runs detected(Maurice Gittens)
4224 fix for buffer overrun in libpgtcl(Randy Kunkee)
4225 fix for UNION with DISTINCT or ORDER BY(Bruce)
4226 gettimeofday configure check(Doug Winterburn)
4227 Fix "indexes not used" bug(Vadim)
4228 docs additions(Thomas)
4229 Fix for backend memory leak(Bruce)
4230 libreadline cleanup(Erwan MAS)
4231 Remove DISTDIR(Bruce)
4232 Makefile dependency cleanup(Jeroen van Vianen)
4239 <sect1 id="release-6-3-1">
4240 <title>Release 6.3.1</title>
4243 <title>Release date</title>
4244 <simpara>1998-03-23</simpara>
4253 Additional support for multibyte character sets.
4259 Repair byte ordering for mixed-endian clients and servers.
4265 Minor updates to allowed SQL syntax.
4271 Improvements to the configuration autodetection for installation.
4278 A dump/restore is NOT required for those running 6.3. A
4279 <literal>make distclean</>, <literal>make</>, and <literal>make install</> is all that is required.
4280 This last step should be performed while the postmaster is not running.
4281 You should re-link any custom applications that use <productname>PostgreSQL</productname> libraries.
4284 For upgrades from pre-6.3 installations,
4285 refer to the installation and migration instructions for version 6.3.
4289 <title>Changes</title>
4293 ecpg cleanup/fixes, now version 1.1(Michael Meskes)
4294 pg_user cleanup(Bruce)
4295 large object fix for pg_dump and tclsh (alvin)
4296 LIKE fix for multiple adjacent underscores
4297 fix for redefining builtin functions(Thomas)
4299 upgrade to pg_access 0.83
4300 updated CLUSTER manual page
4301 multibyte character set support, see doc/README.mb(Tatsuo)
4302 configure --with-pgport fix
4304 big-endian fix for backend communications(Kataoka)
4305 SUBSTR() and substring() fix(Jan)
4306 several jdbc fixes(Peter)
4307 libpgtcl improvements, see libptcl/README(Randy Kunkee)
4308 Fix for "Datasize = 0" error(Vadim)
4309 Prevent \do from wrapping(Bruce)
4310 Remove duplicate Russian character set entries
4312 Allow optional TABLE keyword in LOCK and SELECT INTO(Thomas)
4313 CREATE SEQUENCE options to allow a negative integer(Thomas)
4314 Add "PASSWORD" as an allowed column identifier(Thomas)
4315 Add checks for UNION target fields(Bruce)
4316 Fix Alpha port(Dwayne Bailey)
4317 Fix for text arrays containing quotes(Doug Gibson)
4318 Solaris compile fix(Albert Chin-A-Young)
4319 Better identify tcl and tk libs and includes(Bruce)
4325 <sect1 id="release-6-3">
4326 <title>Release 6.3</title>
4329 <title>Release date</title>
4330 <simpara>1998-03-01</simpara>
4334 There are <emphasis>many</emphasis> new features and improvements in this release.
4335 Here is a brief, incomplete summary:
4340 Many new SQL features, including
4341 full <acronym>SQL92</acronym> subselect capability
4342 (everything is here but target-list subselects).
4348 Support for client-side environment variables to specify time zone and date style.
4354 Socket interface for client/server connection. This is the default now
4355 so you may need to start <application>postmaster</application> with the
4356 <option>-i</option> flag.
4362 Better password authorization mechanisms. Default table permissions have changed.
4368 Old-style <firstterm>time travel</firstterm>
4369 has been removed. Performance has been improved.
4377 Bruce Momjian wrote the following notes to introduce the new release.
4382 There are some general 6.3 issues that I want to mention. These are
4383 only the big items that can not be described in one sentence. A review
4384 of the detailed changes list is still needed.
4387 First, we now have subselects. Now that we have them, I would like to
4388 mention that without subselects, SQL is a very limited language.
4389 Subselects are a major feature, and you should review your code for
4390 places where subselects provide a better solution for your queries. I
4391 think you will find that there are more uses for subselects than you may
4392 think. Vadim has put us on the big SQL map with subselects, and fully
4393 functional ones too. The only thing you can't do with subselects is to
4394 use them in the target list.
4397 Second, 6.3 uses Unix domain sockets rather than TCP/IP by default. To
4398 enable connections from other machines, you have to use the new
4399 postmaster -i option, and of course edit <filename>pg_hba.conf</filename>. Also, for this
4400 reason, the format of <filename>pg_hba.conf</filename> has changed.
4403 Third, <type>char()</type> fields will now allow faster access than <type>varchar()</type> or
4404 <type>text</type>. Specifically, the <type>text</> and <type>varchar()</type> have a penalty for access to
4405 any columns after the first column of this type. <type>char()</type> used to also
4406 have this access penalty, but it no longer does. This may suggest that
4407 you redesign some of your tables, especially if you have short character
4408 columns that you have defined as <type>varchar()</type> or <type>text</type>. This and other
4409 changes make 6.3 even faster than earlier releases.
4412 We now have passwords definable independent of any Unix file. There are
4413 new SQL USER commands.
4414 See the <citetitle>Administrator's Guide</citetitle> for more
4415 information. There is a new table, pg_shadow, which is used to store
4416 user information and user passwords, and it by default only SELECT-able
4417 by the <systemitem>postgres</systemitem> super-user. pg_user is now a view of pg_shadow, and is
4418 SELECT-able by PUBLIC. You should keep using pg_user in your
4419 application without changes.
4422 User-created tables now no longer have SELECT permission to PUBLIC by
4423 default. This was done because the ANSI standard requires it. You can
4424 of course GRANT any permissions you want after the table is created.
4425 System tables continue to be SELECT-able by PUBLIC.
4428 We also have real deadlock detection code. No more sixty-second
4429 timeouts. And the new locking code implements a <acronym>FIFO</acronym> better, so there
4430 should be less resource starvation during heavy use.
4433 Many complaints have been made about inadequate documentation in previous
4434 releases. Thomas has put much effort into many new manuals for this
4435 release. Check out the doc/ directory.
4438 For performance reasons, time travel is gone, but can be implemented
4439 using triggers (see <filename>pgsql/contrib/spi/README</filename>). Please check out the new
4440 \d command for types, operators, etc. Also, views have their own
4441 permissions now, not based on the underlying tables, so permissions on
4442 them have to be set separately. Check <filename>/pgsql/interfaces</filename> for some new
4443 ways to talk to <productname>PostgreSQL</productname>.
4446 This is the first release that really required an explanation for
4447 existing users. In many ways, this was necessary because the new
4448 release removes many limitations, and the work-arounds people were using
4449 are no longer needed.
4453 <title>Migration to version 6.3</title>
4456 A dump/restore using <application>pg_dump</application>
4457 or <application>pg_dumpall</application>
4458 is required for those wishing to migrate data from any
4459 previous release of <productname>PostgreSQL</productname>.
4464 <title>Changes</title>
4470 Fix binary cursors broken by MOVE implementation(Vadim)
4471 Fix for tcl library crash(Jan)
4472 Fix for array handling, from Gerhard Hintermayer
4473 Fix acl error, and remove duplicate pqtrace(Bruce)
4474 Fix psql \e for empty file(Bruce)
4475 Fix for textcat on varchar() fields(Bruce)
4476 Fix for DBT Sendproc (Zeugswetter Andres)
4477 Fix vacuum analyze syntax problem(Bruce)
4478 Fix for international identifiers(Tatsuo)
4479 Fix aggregates on inherited tables(Bruce)
4480 Fix substr() for out-of-bounds data
4481 Fix for select 1=1 or 2=2, select 1=1 and 2=2, and select sum(2+2)(Bruce)
4482 Fix notty output to show status result. -q option still turns it off(Bruce)
4483 Fix for count(*), aggs with views and multiple tables and sum(3)(Bruce)
4485 Fix for PQtrace start/stop several times(Bruce)
4486 Fix a variety of locking problems like newer lock waiters getting
4487 lock before older waiters, and having readlock people not share
4488 locks if a writer is waiting for a lock, and waiting writers not
4489 getting priority over waiting readers(Bruce)
4490 Fix crashes in psql when executing queries from external files(James)
4491 Fix problem with multiple order by columns, with the first one having
4493 Use correct hash table support functions for float8 and int4(Thomas)
4494 Re-enable JOIN= option in CREATE OPERATOR statement (Thomas)
4495 Change precedence for boolean operators to match expected behavior(Thomas)
4496 Generate elog(ERROR) on over-large integer(Bruce)
4497 Allow multiple-argument functions in constraint clauses(Thomas)
4498 Check boolean input literals for 'true','false','yes','no','1','0'
4499 and throw elog(ERROR) if unrecognized(Thomas)
4500 Major large objects fix
4501 Fix for GROUP BY showing duplicates(Vadim)
4502 Fix for index scans in MergeJion(Vadim)
4506 Subselects with EXISTS, IN, ALL, ANY keywords (Vadim, Bruce, Thomas)
4507 New User Manual(Thomas, others)
4508 Speedup by inlining some frequently-called functions
4509 Real deadlock detection, no more timeouts(Bruce)
4510 Add SQL92 "constants" CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP,
4511 CURRENT_USER(Thomas)
4512 Modify constraint syntax to be SQL92-compliant(Thomas)
4513 Implement SQL92 PRIMARY KEY and UNIQUE clauses using indexes(Thomas)
4514 Recognize SQL92 syntax for FOREIGN KEY. Throw elog notice(Thomas)
4515 Allow NOT NULL UNIQUE constraint clause (each allowed separately before)(Thomas)
4516 Allow PostgreSQL-style casting ("::") of non-constants(Thomas)
4517 Add support for SQL3 TRUE and FALSE boolean constants(Thomas)
4518 Support SQL92 syntax for IS TRUE/IS FALSE/IS NOT TRUE/IS NOT FALSE(Thomas)
4519 Allow shorter strings for boolean literals (e.g. "t", "tr", "tru")(Thomas)
4520 Allow SQL92 delimited identifiers(Thomas)
4521 Implement SQL92 binary and hexadecimal string decoding (b'10' and x'1F')(Thomas)
4522 Support SQL92 syntax for type coercion of literal strings
4523 (e.g. "DATETIME 'now'")(Thomas)
4524 Add conversions for int2, int4, and OID types to and from text(Thomas)
4525 Use shared lock when building indexes(Vadim)
4526 Free memory allocated for an user query inside transaction block after
4527 this query is done, was turned off in <= 6.2.1(Vadim)
4528 New SQL statement CREATE PROCEDURAL LANGUAGE(Jan)
4529 New <productname>PostgreSQL</productname> Procedural Language (PL) backend interface(Jan)
4530 Rename pg_dump -H option to -h(Bruce)
4531 Add Java support for passwords, European dates(Peter)
4532 Use indexes for LIKE and ~, !~ operations(Bruce)
4533 Add hash functions for datetime and timespan(Thomas)
4534 Time Travel removed(Vadim, Bruce)
4535 Add paging for \d and \z, and fix \i(Bruce)
4536 Add Unix domain socket support to backend and to frontend library(Goran)
4537 Implement CREATE DATABASE/WITH LOCATION and initlocation utility(Thomas)
4538 Allow more SQL92 and/or <productname>PostgreSQL</productname> reserved words as column identifiers(Thomas)
4539 Augment support for SQL92 SET TIME ZONE...(Thomas)
4540 SET/SHOW/RESET TIME ZONE uses TZ backend environment variable(Thomas)
4541 Implement SET keyword = DEFAULT and SET TIME ZONE DEFAULT(Thomas)
4542 Enable SET TIME ZONE using TZ environment variable(Thomas)
4543 Add PGDATESTYLE environment variable to frontend and backend initialization(Thomas)
4544 Add PGTZ, PGCOSTHEAP, PGCOSTINDEX, PGRPLANS, PGGEQO
4545 frontend library initialization environment variables(Thomas)
4546 Regression tests time zone automatically set with "setenv PGTZ PST8PDT"(Thomas)
4547 Add pg_description table for info on tables, columns, operators, types, and
4549 Increase 16 char limit on system table/index names to 32 characters(Bruce)
4550 Rename system indexes(Bruce)
4551 Add 'GERMAN' option to SET DATESTYLE(Thomas)
4552 Define an "ISO-style" timespan output format with "hh:mm:ss" fields(Thomas)
4553 Allow fractional values for delta times (e.g. '2.5 days')(Thomas)
4554 Validate numeric input more carefully for delta times(Thomas)
4555 Implement day of year as possible input to date_part()(Thomas)
4556 Define timespan_finite() and text_timespan() functions(Thomas)
4557 Remove archive stuff(Bruce)
4558 Allow for a pg_password authentication database that is separate from
4559 the system password file(Todd)
4560 Dump ACLs, GRANT, REVOKE permissions(Matt)
4561 Define text, varchar, and bpchar string length functions(Thomas)
4562 Fix Query handling for inheritance, and cost computations(Bruce)
4563 Implement CREATE TABLE/AS SELECT (alternative to SELECT/INTO)(Thomas)
4564 Allow NOT, IS NULL, IS NOT NULL in constraints(Thomas)
4565 Implement UNIONs for SELECT(Bruce)
4566 Add UNION, GROUP, DISTINCT to INSERT(Bruce)
4567 varchar() stores only necessary bytes on disk(Bruce)
4568 Fix for BLOBs(Peter)
4569 Mega-Patch for JDBC...see README_6.3 for list of changes(Peter)
4570 Remove unused "option" from PQconnectdb()
4571 New LOCK command and lock manual page describing deadlocks(Bruce)
4572 Add new psql \da, \dd, \df, \do, \dS, and \dT commands(Bruce)
4573 Enhance psql \z to show sequences(Bruce)
4574 Show NOT NULL and DEFAULT in psql \d table(Bruce)
4575 New psql .psqlrc file start-up(Andrew)
4576 Modify sample start-up script in contrib/linux to show syslog(Thomas)
4577 New types for IP and MAC addresses in contrib/ip_and_mac(TomH)
4578 Unix system time conversions with date/time types in contrib/unixdate(Thomas)
4579 Update of contrib stuff(Massimo)
4580 Add Unix socket support to DBD::Pg(Goran)
4581 New python interface (PyGreSQL 2.0)(D'Arcy)
4582 New frontend/backend protocol has a version number, network byte order(Phil)
4583 Security features in pg_hba.conf enhanced and documented, many cleanups(Phil)
4584 CHAR() now faster access than VARCHAR() or TEXT
4585 ecpg embedded SQL preprocessor
4586 Reduce system column overhead(Vadmin)
4587 Remove pg_time table(Vadim)
4588 Add pg_type attribute to identify types that need length (bpchar, varchar)
4589 Add report of offending line when COPY command fails
4590 Allow VIEW permissions to be set separately from the underlying tables.
4591 For security, use GRANT/REVOKE on views as appropriate(Jan)
4592 Tables now have no default GRANT SELECT TO PUBLIC. You must
4593 explicitly grant such permissions.
4594 Clean up tutorial examples(Darren)
4598 Add new html development tools, and flow chart in /tools/backend
4599 Fix for SCO compiles
4600 Stratus computer port Robert Gillies
4601 Added support for shlib for BSD44_derived & i386_solaris
4602 Make configure more automated(Brook)
4603 Add script to check regression test results
4604 Break parser functions into smaller files, group together(Bruce)
4605 Rename heap_create to heap_create_and_catalog, rename heap_creatr
4606 to heap_create()(Bruce)
4607 Sparc/Linux patch for locking(TomS)
4608 Remove PORTNAME and reorganize port-specific stuff(Marc)
4609 Add optimizer README file(Bruce)
4610 Remove some recursion in optimizer and clean up some code there(Bruce)
4611 Fix for NetBSD locking(Henry)
4612 Fix for libptcl make(Tatsuo)
4614 Change IS TRUE, IS FALSE, ... to expressions using "=" rather than
4615 function calls to istrue() or isfalse() to allow optimization(Thomas)
4616 Various fixes NetBSD/Sparc related(TomH)
4617 Alpha linux locking(Travis,Ryan)
4618 Change elog(WARN) to elog(ERROR)(Bruce)
4619 FAQ for FreeBSD(Marc)
4620 Bring in the PostODBC source tree as part of our standard distribution(Marc)
4621 A minor patch for HP/UX 10 vs 9(Stan)
4622 New pg_attribute.atttypmod for type-specific info like varchar length(Bruce)
4623 UnixWare patches(Billy)
4624 New i386 'lock' for spin lock asm(Billy)
4625 Support for multiplexed backends is removed
4626 Start an OpenBSD port
4629 Add string functions to regression suite(Thomas)
4630 Expand a few function names formerly truncated to 16 characters(Thomas)
4631 Remove un-needed malloc() calls and replace with palloc()(Bruce)
4637 <sect1 id="release-6-2-1">
4638 <title>Release 6.2.1</title>
4641 <title>Release date</title>
4642 <simpara>1997-10-17</simpara>
4646 6.2.1 is a bug-fix and usability release on 6.2.
4654 Allow strings to span lines, per <acronym>SQL92</acronym>.
4660 Include example trigger function for inserting user names on table updates.
4667 This is a minor bug-fix release on 6.2.
4668 For upgrades from pre-6.2 systems, a full dump/reload is required.
4669 Refer to the 6.2 release notes for instructions.
4673 <title>Migration from version 6.2 to version 6.2.1</title>
4676 This is a minor bug-fix release. A dump/reload is not required from version 6.2,
4677 but is required from any release prior to 6.2.
4680 In upgrading from version 6.2, if you choose to dump/reload you will find that
4681 avg(money) is now calculated correctly. All other bug fixes take effect
4682 upon updating the executables.
4685 Another way to avoid dump/reload is to use the following SQL command
4686 from <command>psql</command> to update the existing system table:
4689 update pg_aggregate set aggfinalfn = 'cash_div_flt8'
4690 where aggname = 'avg' and aggbasetype = 790;
4694 This will need to be done to every existing database, including template1.
4699 <title>Changes</title>
4703 Allow TIME and TYPE column names(Thomas)
4704 Allow larger range of true/false as boolean values(Thomas)
4705 Support output of "now" and "current"(Thomas)
4706 Handle DEFAULT with INSERT of NULL properly(Vadim)
4707 Fix for relation reference counts problem in buffer manager(Vadim)
4708 Allow strings to span lines, like ANSI(Thomas)
4709 Fix for backward cursor with ORDER BY(Vadim)
4710 Fix avg(cash) computation(Thomas)
4711 Fix for specifying a column twice in ORDER/GROUP BY(Vadim)
4712 Documented new libpq function to return affected rows, PQcmdTuples(Bruce)
4713 Trigger function for inserting user names for INSERT/UPDATE(Brook Milligan)
4719 <sect1 id="release-6-2">
4720 <title>Release 6.2</title>
4723 <title>Release date</title>
4724 <simpara>1997-10-02</simpara>
4728 A dump/restore is required for those wishing to migrate data from
4729 previous releases of <productname>PostgreSQL</productname>.
4733 <title>Migration from version 6.1 to version 6.2</title>
4736 This migration requires a complete dump of the 6.1 database and a
4737 restore of the database in 6.2.
4740 Note that the <command>pg_dump</command> and <command>pg_dumpall</command> utility from 6.2 should be used
4741 to dump the 6.1 database.
4746 <title>Migration from version 1.<replaceable>x</> to version 6.2</title>
4749 Those migrating from earlier 1.* releases should first upgrade to 1.09
4750 because the COPY output format was improved from the 1.02 release.
4755 <title>Changes</title>
4761 Fix problems with pg_dump for inheritance, sequences, archive tables(Bruce)
4762 Fix compile errors on overflow due to shifts, unsigned, and bad prototypes
4763 from Solaris(Diab Jerius)
4764 Fix bugs in geometric line arithmetic (bad intersection calculations)(Thomas)
4765 Check for geometric intersections at endpoints to avoid rounding ugliness(Thomas)
4766 Catch non-functional delete attempts(Vadim)
4767 Change time function names to be more consistent(Michael Reifenberg)
4768 Check for zero divides(Michael Reifenberg)
4769 Fix very old bug which made tuples changed/inserted by a commnd
4770 visible to the command itself (so we had multiple update of
4771 updated tuples, etc)(Vadim)
4772 Fix for SELECT null, 'fail' FROM pg_am (Patrick)
4773 SELECT NULL as EMPTY_FIELD now allowed(Patrick)
4774 Remove un-needed signal stuff from contrib/pginterface
4775 Fix OR (where x != 1 or x isnull didn't return tuples with x NULL) (Vadim)
4776 Fix time_cmp function (Vadim)
4777 Fix handling of functions with non-attribute first argument in
4778 WHERE clauses (Vadim)
4779 Fix GROUP BY when order of entries is different from order
4780 in target list (Vadim)
4781 Fix pg_dump for aggregates without sfunc1 (Vadim)
4785 Default genetic optimizer GEQO parameter is now 8(Bruce)
4786 Allow use parameters in target list having aggregates in functions(Vadim)
4787 Added JDBC driver as an interface(Adrian & Peter)
4789 Return number of tuples inserted/affected by INSERT/UPDATE/DELETE etc.(Vadim)
4790 Triggers implemented with CREATE TRIGGER (SQL3)(Vadim)
4791 SPI (Server Programming Interface) allows execution of queries inside
4793 NOT NULL implemented (SQL92)(Robson Paniago de Miranda)
4794 Include reserved words for string handling, outer joins, and unions(Thomas)
4795 Implement extended comments ("/* ... */") using exclusive states(Thomas)
4796 Add "//" single-line comments(Bruce)
4797 Remove some restrictions on characters in operator names(Thomas)
4798 DEFAULT and CONSTRAINT for tables implemented (SQL92)(Vadim & Thomas)
4799 Add text concatenation operator and function (SQL92)(Thomas)
4800 Support WITH TIME ZONE syntax (SQL92)(Thomas)
4801 Support INTERVAL unit TO unit syntax (SQL92)(Thomas)
4802 Define types DOUBLE PRECISION, INTERVAL, CHARACTER,
4803 and CHARACTER VARYING (SQL92)(Thomas)
4804 Define type FLOAT(p) and rudimentary DECIMAL(p,s), NUMERIC(p,s) (SQL92)(Thomas)
4805 Define EXTRACT(), POSITION(), SUBSTRING(), and TRIM() (SQL92)(Thomas)
4806 Define CURRENT_DATE, CURRENT_TIME, CURRENT_TIMESTAMP (SQL92)(Thomas)
4807 Add syntax and warnings for UNION, HAVING, INNER and OUTER JOIN (SQL92)(Thomas)
4808 Add more reserved words, mostly for SQL92 compliance(Thomas)
4809 Allow hh:mm:ss time entry for timespan/reltime types(Thomas)
4810 Add center() routines for lseg, path, polygon(Thomas)
4811 Add distance() routines for circle-polygon, polygon-polygon(Thomas)
4812 Check explicitly for points and polygons contained within polygons
4813 using an axis-crossing algorithm(Thomas)
4814 Add routine to convert circle-box(Thomas)
4815 Merge conflicting operators for different geometric data types(Thomas)
4816 Replace distance operator "<===>" with "<->"(Thomas)
4817 Replace "above" operator "!^" with ">^" and "below" operator "!|" with "<^"(Thomas)
4818 Add routines for text trimming on both ends, substring, and string position(Thomas)
4819 Added conversion routines circle(box) and poly(circle)(Thomas)
4820 Allow internal sorts to be stored in memory rather than in files(Bruce & Vadim)
4821 Allow functions and operators on internally-identical types to succeed(Bruce)
4822 Speed up backend start-up after profiling analysis(Bruce)
4823 Inline frequently called functions for performance(Bruce)
4824 Reduce open() calls(Bruce)
4825 psql: Add PAGER for \h and \?,\C fix
4826 Fix for psql pager when no tty(Bruce)
4827 New entab utility(Bruce)
4828 General trigger functions for referential integrity (Vadim)
4829 General trigger functions for time travel (Vadim)
4830 General trigger functions for AUTOINCREMENT/IDENTITY feature (Vadim)
4831 MOVE implementation (Vadim)
4835 HP-UX 10 patches (Vladimir Turin)
4836 Added SCO support, (Daniel Harris)
4837 MkLinux patches (Tatsuo Ishii)
4838 Change geometric box terminology from "length" to "width"(Thomas)
4839 Deprecate temporary unstored slope fields in geometric code(Thomas)
4840 Remove restart instructions from INSTALL(Bruce)
4841 Look in /usr/ucb first for install(Bruce)
4842 Fix c++ copy example code(Thomas)
4843 Add -o to psql manual page(Bruce)
4844 Prevent relname unallocated string length from being copied into database(Bruce)
4845 Cleanup for NAMEDATALEN use(Bruce)
4846 Fix pg_proc names over 15 chars in output(Bruce)
4847 Add strNcpy() function(Bruce)
4848 remove some (void) casts that are unnecessary(Bruce)
4849 new interfaces directory(Marc)
4850 Replace fopen() calls with calls to fd.c functions(Bruce)
4851 Make functions static where possible(Bruce)
4852 enclose unused functions in #ifdef NOT_USED(Bruce)
4853 Remove call to difftime() in timestamp support to fix SunOS(Bruce & Thomas)
4854 Changes for Digital Unix
4855 Portability fix for pg_dumpall(Bruce)
4856 Rename pg_attribute.attnvals to attdispersion(Bruce)
4857 "intro/unix" manual page now "pgintro"(Bruce)
4858 "built-in" manual page now "pgbuiltin"(Bruce)
4859 "drop" manual page now "drop_table"(Bruce)
4860 Add "create_trigger", "drop_trigger" manual pages(Thomas)
4861 Add constraints regression test(Vadim & Thomas)
4862 Add comments syntax regression test(Thomas)
4863 Add PGINDENT and support program(Bruce)
4864 Massive commit to run PGINDENT on all *.c and *.h files(Bruce)
4865 Files moved to /src/tools directory(Bruce)
4866 SPI and Trigger programming guides (Vadim & D'Arcy)
4872 <sect1 id="release-6-1-1">
4873 <title>Release 6.1.1</title>
4876 <title>Release date</title>
4877 <simpara>1997-07-22</simpara>
4881 <title>Migration from version 6.1 to version 6.1.1</title>
4884 This is a minor bug-fix release. A dump/reload is not required from version 6.1,
4885 but is required from any release prior to 6.1.
4886 Refer to the release notes for 6.1 for more details.
4891 <title>Changes</title>
4895 fix for SET with options (Thomas)
4896 allow pg_dump/pg_dumpall to preserve ownership of all tables/objects(Bruce)
4897 new psql \connect option allows changing usernames without changing databases
4898 fix for initdb --debug option(Yoshihiko Ichikawa))
4899 lextest cleanup(Bruce)
4901 fix date/time month boundary arithmetic(Thomas)
4902 fix timezone daylight handling for some ports(Thomas, Bruce, Tatsuo)
4903 timestamp overhauled to use standard functions(Thomas)
4904 other code cleanup in date/time routines(Thomas)
4905 psql's \d now case-insensitive(Bruce)
4906 psql's backslash commands can now have trailing semicolon(Bruce)
4907 fix memory leak in psql when using \g(Bruce)
4908 major fix for endian handling of communication to server(Thomas, Tatsuo)
4909 Fix for Solaris assembler and include files(Yoshihiko Ichikawa)
4910 allow underscores in usernames(Bruce)
4911 pg_dumpall now returns proper status, portability fix(Bruce)
4917 <sect1 id="release-6-1">
4918 <title>Release 6.1</title>
4921 <title>Release date</title>
4922 <simpara>1997-06-08</simpara>
4926 The regression tests have been adapted and extensively modified for the
4927 6.1 release of <productname>PostgreSQL</productname>.
4931 Three new data types (<type>datetime</type>, <type>timespan</type>, and <type>circle</type>) have been added to
4932 the native set of <productname>PostgreSQL</productname> types. Points, boxes, paths, and polygons
4933 have had their output formats made consistent across the data types.
4934 The polygon output in misc.out has only been spot-checked for correctness
4935 relative to the original regression output.
4939 <productname>PostgreSQL</productname> 6.1 introduces a new, alternate
4940 optimizer which uses <firstterm>genetic</firstterm>
4941 algorithms. These algorithms introduce a random behavior in the ordering
4942 of query results when the query contains multiple qualifiers or multiple
4943 tables (giving the optimizer a choice on order of evaluation). Several
4944 regression tests have been modified to explicitly order the results, and
4945 hence are insensitive to optimizer choices. A few regression tests are
4946 for data types which are inherently unordered (e.g. points and time
4947 intervals) and tests involving those types are explicitly bracketed with
4948 <command>set geqo to 'off'</command> and <command>reset geqo</command>.
4952 The interpretation of array specifiers (the curly braces around atomic
4953 values) appears to have changed sometime after the original regression
4954 tests were generated. The current <filename>./expected/*.out</filename> files reflect this
4955 new interpretation, which may not be correct!
4959 The float8 regression test fails on at least some platforms. This is due
4960 to differences in implementations of <function>pow()</function> and <function>exp()</function> and the signaling
4961 mechanisms used for overflow and underflow conditions.
4965 The <quote>random</> results in the random test should cause the
4966 <quote>random</quote> test to be <quote>failed</quote>, since the
4967 regression tests are evaluated using a simple diff. However,
4968 <quote>random</> does not seem to produce random results on my test
4969 machine (Linux/<application>gcc</>/i686).
4973 <title>Migration to version 6.1</title>
4976 This migration requires a complete dump of the 6.0 database and a
4977 restore of the database in 6.1.
4980 Those migrating from earlier 1.* releases should first upgrade to 1.09
4981 because the COPY output format was improved from the 1.02 release.
4986 <title>Changes</title>
4992 packet length checking in library routines
4993 lock manager priority patch
4994 check for under/over flow of float8(Bruce)
4995 multitable join fix(Vadim)
4996 SIGPIPE crash fix(Darren)
4997 large object fixes(Sven)
4998 allow btree indexes to handle NULLs(Vadim)
4999 timezone fixes(D'Arcy)
5000 select SUM(x) can return NULL on no rows(Thomas)
5001 internal optimizer, executor bug fixes(Vadim)
5002 fix problem where inner loop in < or <= has no rows(Vadim)
5003 prevent re-commuting join index clauses(Vadim)
5004 fix join clauses for multiple tables(Vadim)
5005 fix hash, hashjoin for arrays(Vadim)
5006 fix btree for abstime type(Vadim)
5007 large object fixes(Raymond)
5008 fix buffer leak in hash indexes (Vadim)
5009 fix rtree for use in inner scan (Vadim)
5010 fix gist for use in inner scan, cleanups (Vadim, Andrea)
5011 avoid unnecessary local buffers allocation (Vadim, Massimo)
5012 fix local buffers leak in transaction aborts (Vadim)
5013 fix file manager memmory leaks, cleanups (Vadim, Massimo)
5014 fix storage manager memmory leaks (Vadim)
5015 fix btree duplicates handling (Vadim)
5016 fix deleted tuples re-incarnation caused by vacuum (Vadim)
5017 fix SELECT varchar()/char() INTO TABLE made zero-length fields(Bruce)
5018 many psql, pg_dump, and libpq memory leaks fixed using Purify (Igor)
5022 attribute optimization statistics(Bruce)
5023 much faster new btree bulk load code(Paul)
5024 BTREE UNIQUE added to bulk load code(Vadim)
5025 new lock debug code(Massimo)
5026 massive changes to libpg++(Leo)
5027 new GEQO optimizer speeds table multitable optimization(Martin)
5028 new WARN message for non-unique insert into unique key(Marc)
5029 update x=-3, no spaces, now valid(Bruce)
5030 remove case-sensitive identifier handling(Bruce,Thomas,Dan)
5031 debug backend now pretty-prints tree(Darren)
5032 new Oracle character functions(Edmund)
5033 new plaintext password functions(Dan)
5034 no such class or insufficient privilege changed to distinct messages(Dan)
5035 new ANSI timestamp function(Dan)
5036 new ANSI Time and Date types (Thomas)
5037 move large chunks of data in backend(Martin)
5038 multicolumn btree indexes(Vadim)
5039 new SET var TO value command(Martin)
5040 update transaction status on reads(Dan)
5041 new locale settings for character types(Oleg)
5042 new SEQUENCE serial number generator(Vadim)
5043 GROUP BY function now possible(Vadim)
5044 re-organize regression test(Thomas,Marc)
5045 new optimizer operation weights(Vadim)
5046 new psql \z grant/permit option(Marc)
5047 new MONEY data type(D'Arcy,Thomas)
5048 tcp socket communication speed improved(Vadim)
5049 new VACUUM option for attribute statistics, and for certain columns (Vadim)
5050 many geometric type improvements(Thomas,Keith)
5051 additional regression tests(Thomas)
5052 new datestyle variable(Thomas,Vadim,Martin)
5053 more comparison operators for sorting types(Thomas)
5054 new conversion functions(Thomas)
5055 new more compact btree format(Vadim)
5056 allow pg_dumpall to preserve database ownership(Bruce)
5057 new SET GEQO=# and R_PLANS variable(Vadim)
5058 old (!GEQO) optimizer can use right-sided plans (Vadim)
5059 typechecking improvement in SQL parser(Bruce)
5060 new SET, SHOW, RESET commands(Thomas,Vadim)
5061 new \connect database USER option
5062 new destroydb -i option (Igor)
5063 new \dt and \di psql commands (Darren)
5064 SELECT "\n" now escapes newline (A. Duursma)
5065 new geometry conversion functions from old format (Thomas)
5069 new configuration script(Marc)
5070 readline configuration option added(Marc)
5071 OS-specific configuration options removed(Marc)
5072 new OS-specific template files(Marc)
5073 no more need to edit Makefile.global(Marc)
5074 re-arrange include files(Marc)
5075 nextstep patches (Gregor Hoffleit)
5076 removed WIN32-specific code(Bruce)
5077 removed postmaster -e option, now only postgres -e option (Bruce)
5078 merge duplicate library code in front/backends(Martin)
5079 now works with eBones, international Kerberos(Jun)
5080 more shared library support
5081 c++ include file cleanup(Bruce)
5082 warn about buggy flex(Bruce)
5083 DG/UX, Ultrix, IRIX, AIX portability fixes
5089 <sect1 id="release-6-0">
5090 <title>Release 6.0</title>
5093 <title>Release date</title>
5094 <simpara>1997-01-29</simpara>
5098 A dump/restore is required for those wishing to migrate data from
5099 previous releases of <productname>PostgreSQL</productname>.
5103 <title>Migration from version 1.09 to version 6.0</title>
5106 This migration requires a complete dump of the 1.09 database and a
5107 restore of the database in 6.0.
5112 <title>Migration from pre-1.09 to version 6.0</title>
5115 Those migrating from earlier 1.* releases should first upgrade to 1.09
5116 because the COPY output format was improved from the 1.02 release.
5121 <title>Changes</title>
5127 ALTER TABLE bug - running postgress process needs to re-read table definition
5128 Allow vacuum to be run on one table or entire database(Bruce)
5130 Fix array over-runs of memory writes(Kurt)
5131 Fix elusive btree range/non-range bug(Dan)
5132 Fix for hash indexes on some types like time and date
5133 Fix for pg_log size explosion
5134 Fix permissions on lo_export()(Bruce)
5135 Fix unitialized reads of memory(Kurt)
5136 Fixed ALTER TABLE ... char(3) bug(Bruce)
5137 Fixed a few small memory leaks
5138 Fixed EXPLAIN handling of options and changed full_path option name
5139 Fixed output of group acl permissions
5140 Memory leaks (hunt and destroy with tools like Purify(Kurt)
5141 Minor improvements to rules system
5143 New asserts for run-checking
5144 Overhauled parser/analyze code to properly report errors and increase speed
5145 Pg_dump -d now handles NULL's properly(Bruce)
5146 Prevent SELECT NULL from crashing server (Bruce)
5147 Properly report errors when INSERT ... SELECT columns did not match
5148 Properly report errors when insert column names were not correct
5149 psql \g filename now works(Bruce)
5150 psql fixed problem with multiple statements on one line with multiple outputs
5151 Removed duplicate system OIDs
5152 SELECT * INTO TABLE . GROUP/ORDER BY gives unlink error if table exists(Bruce)
5153 Several fixes for queries that crashed the backend
5154 Starting quote in insert string errors(Bruce)
5155 Submitting an empty query now returns empty status, not just " " query(Bruce)
5159 Add EXPLAIN manual page(Bruce)
5160 Add UNIQUE index capability(Dan)
5161 Add hostname/user level access control rather than just hostname and user
5162 Add synonym of != for <>(Bruce)
5163 Allow "select oid,* from table"
5164 Allow BY,ORDER BY to specify columns by number, or by non-alias table.column(Bruce)
5165 Allow COPY from the frontend(Bryan)
5166 Allow GROUP BY to use alias column name(Bruce)
5167 Allow actual compression, not just reuse on the same page(Vadim)
5168 Allow installation-configuration option to auto-add all local users(Bryan)
5169 Allow libpq to distinguish between text value '' and null(Bruce)
5170 Allow non-postgres users with createdb privs to destroydb's
5171 Allow restriction on who can create C functions(Bryan)
5172 Allow restriction on who can do backend COPY(Bryan)
5173 Can shrink tables, pg_time and pg_log(Vadim & Erich)
5174 Change debug level 2 to print queries only, changed debug heading layout(Bruce)
5175 Change default decimal constant representation from float4 to float8(Bruce)
5176 European date format now set when postmaster is started
5177 Execute lowercase function names if not found with exact case
5178 Fixes for aggregate/GROUP processing, allow 'select sum(func(x),sum(x+y) from z'
5179 Gist now included in the distrubution(Marc)
5180 Idend authentication of local users(Bryan)
5181 Implement BETWEEN qualifier(Bruce)
5182 Implement IN qualifier(Bruce)
5183 libpq has PQgetisnull()(Bruce)
5184 libpq++ improvements
5185 New options to initdb(Bryan)
5186 Pg_dump allow dump of OIDs(Bruce)
5187 Pg_dump create indexes after tables are loaded for speed(Bruce)
5188 Pg_dumpall dumps all databases, and the user table
5189 Pginterface additions for NULL values(Bruce)
5190 Prevent postmaster from being run as root
5191 psql \h and \? is now readable(Bruce)
5192 psql allow backslashed, semicolons anywhere on the line(Bruce)
5193 psql changed command prompt for lines in query or in quotes(Bruce)
5194 psql char(3) now displays as (bp)char in \d output(Bruce)
5195 psql return code now more accurate(Bryan?)
5196 psql updated help syntax(Bruce)
5197 Re-visit and fix vacuum(Vadim)
5198 Reduce size of regression diffs, remove timezone name difference(Bruce)
5199 Remove compile-time parameters to enable binary distributions(Bryan)
5200 Reverse meaning of HBA masks(Bryan)
5201 Secure Authentication of local users(Bryan)
5202 Speed up vacuum(Vadim)
5203 Vacuum now had VERBOSE option(Bruce)
5207 All functions now have prototypes that are compared against the calls
5208 Allow asserts to be disabled easly from Makefile.global(Bruce)
5209 Change oid constants used in code to #define names
5210 Decoupled sparc and solaris defines(Kurt)
5211 Gcc -Wall compiles cleanly with warnings only from unfixable constructs
5212 Major include file reorganization/reduction(Marc)
5213 Make now stops on compile failure(Bryan)
5214 Makefile restructuring(Bryan, Marc)
5215 Merge bsdi_2_1 to bsdi(Bruce)
5216 Monitor program removed
5217 Name change from Postgres95 to PostgreSQL
5218 New config.h file(Marc, Bryan)
5219 PG_VERSION now set to 6.0 and used by postmaster
5220 Portability additions, including Ultrix, DG/UX, AIX, and Solaris
5221 Reduced the number of #define's, centeralized #define's
5222 Remove duplicate OIDS in system tables(Dan)
5223 Remove duplicate system catalog info or report mismatches(Dan)
5224 Removed many os-specific #define's
5225 Restructured object file generation/location(Bryan, Marc)
5226 Restructured port-specific file locations(Bryan, Marc)
5227 Unused/uninialized variables corrected
5233 <sect1 id="release-1-09">
5234 <title>Release 1.09</title>
5237 <title>Release date</title>
5238 <simpara>1996-11-04</simpara>
5242 Sorry, we didn't keep track of changes from 1.02 to 1.09. Some of
5243 the changes listed in 6.0 were actually included in the 1.02.1 to 1.09
5248 <sect1 id="release-1-02">
5249 <title>Release 1.02</title>
5252 <title>Release date</title>
5253 <simpara>1996-08-01</simpara>
5257 <title>Migration from version 1.02 to version 1.02.1</title>
5260 Here is a new migration file for 1.02.1. It includes the 'copy' change
5261 and a script to convert old <acronym>ASCII</acronym> files.
5265 The following notes are for the benefit of users who want to migrate
5266 databases from <productname>Postgres95</> 1.01 and 1.02 to <productname>Postgres95</> 1.02.1.
5269 If you are starting afresh with <productname>Postgres95</> 1.02.1 and do not need
5270 to migrate old databases, you do not need to read any further.
5275 In order to upgrade older <productname>Postgres95</> version 1.01 or 1.02 databases to
5276 version 1.02.1, the following steps are required:
5281 Start up a new 1.02.1 postmaster
5286 Add the new built-in functions and operators of 1.02.1 to 1.01 or 1.02
5287 databases. This is done by running the new 1.02.1 server against
5288 your own 1.01 or 1.02 database and applying the queries attached at
5289 the end of the file. This can be done easily through <command>psql</>. If your
5290 1.01 or 1.02 database is named <literal>testdb</literal> and you have cut the commands
5291 from the end of this file and saved them in <filename>addfunc.sql</filename>:
5293 % psql testdb -f addfunc.sql
5296 Those upgrading 1.02 databases will get a warning when executing the
5297 last two statements in the file because they are already present in 1.02. This is
5298 not a cause for concern.
5305 <title>Dump/Reload Procedure</title>
5308 If you are trying to reload a pg_dump or text-mode, <literal>copy tablename to
5309 stdout</literal> generated with a previous version, you will need to run the
5310 attached <command>sed</command> script on the ASCII file before loading it into the
5311 database. The old format used '.' as end-of-data, while '\.' is now the
5312 end-of-data marker. Also, empty strings are now loaded in as '' rather
5313 than NULL. See the copy manual page for full details.
5316 sed 's/^\.$/\\./g' <in_file >out_file
5320 If you are loading an older binary copy or non-<systemitem>stdout</> copy, there is no
5321 end-of-data character, and hence no conversion necessary.
5324 -- following lines added by agc to reflect the case-insensitive
5325 -- regexp searching for varchar (in 1.02), and bpchar (in 1.02.1)
5326 create operator ~* (leftarg = bpchar, rightarg = text, procedure = texticregexeq);
5327 create operator !~* (leftarg = bpchar, rightarg = text, procedure = texticregexne);
5328 create operator ~* (leftarg = varchar, rightarg = text, procedure = texticregexeq);
5329 create operator !~* (leftarg = varchar, rightarg = text, procedure = texticregexne);
5335 <title>Changes</title>
5339 Source code maintenance and development
5340 * worldwide team of volunteers
5341 * the source tree now in CVS at ftp.ki.net
5344 * psql (and underlying libpq library) now has many more options for
5345 formatting output, including HTML
5346 * pg_dump now output the schema and/or the data, with many fixes to
5347 enhance completeness.
5348 * psql used in place of monitor in administration shell scripts.
5349 monitor to be deprecated in next release.
5350 * date/time functions enhanced
5351 * NULL insert/update/comparison fixed/enhanced
5352 * TCL/TK lib and shell fixed to work with both tck7.4/tk4.0 and tcl7.5/tk4.1
5354 Bug Fixes (almost too numerous to mention)
5356 * storage management
5357 * check for NULL pointer before dereferencing
5361 * added SolarisX86 port
5362 * added BSD/OS 2.1 port
5367 Contributors (appologies to any missed)
5368 * Kurt J. Lidl <lidl@va.pubnix.com>
5369 (missed in first run, but no less important)
5370 * Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
5371 * Jason Wright <jason@shiloh.vnet.net>
5372 * Cees de Groot <C.deGroot@inter.NL.net>
5373 * ernst.molitor@uni-bonn.de
5374 * michael.siebenborn@ae3.Hypo.DE (Michael Siebenborn (6929))
5375 * Brian E. Gallew <geek+@cmu.edu>
5376 * Vadim B. Mikheev <vadim@sable.krasnoyarsk.su>
5377 * Adam Sussman <myddryn@vidya.com>
5378 * Chris Dunlop <chris@onthe.net.au>
5379 * Marc G. Fournier <scrappy@ki.net>
5380 * Dan McGuirk <mcguirk@indirect.com>
5381 * Dr_George_D_Detlefsen <drgeorge@ilt.com>
5382 * Erich Stamberger <eberger@gewi.kfunigraz.ac.at>
5383 * Massimo Dal Zotto <dz@cs.unitn.it>
5384 * Randy Kunkee <kunkee@Starbase.NeoSoft.COM>
5385 * Rick Weldon <rick@wisetech.com>
5386 * Thomas van Reimersdahl <reimersd@dali.techinfo.rwth-aachen.de>
5387 * david bennett <dave@bensoft.com>
5388 * ernst.molitor@uni-bonn.de
5389 * Julian Assange <proff@suburbia.net>
5390 * Bruce Momjian <pgman@candle.pha.pa.us>
5391 * Paul "Shag" Walmsley <ccshag@cclabs.missouri.edu>
5392 * "Alistair G. Crooks" <azcb0@sde.uts.amdahl.com>
5397 <sect1 id="release-1-01">
5398 <title>Release 1.01</title>
5401 <title>Release date</title>
5402 <simpara>1996-02-23</simpara>
5407 <title>Migration from version 1.0 to version 1.01</title>
5410 The following notes are for the benefit of users who want to migrate
5411 databases from <productname>Postgres95</> 1.0 to <productname>Postgres95</> 1.01.
5414 If you are starting afresh with <productname>Postgres95</> 1.01 and do not need
5415 to migrate old databases, you do not need to read any further.
5418 In order to <productname>Postgres95</> version 1.01 with databases created with
5419 <productname>Postgres95</> version 1.0, the following steps are required:
5424 Set the definition of <symbol>NAMEDATALEN</symbol> in <filename>src/Makefile.global</filename> to 16
5425 and <symbol>OIDNAMELEN</symbol> to 20.
5430 Decide whether you want to use Host based authentication.
5435 If you do, you must create a file name <literal>pg_hba</literal> in your top-level data
5436 directory (typically the value of your <envar>$PGDATA</envar>). <filename>src/libpq/pg_hba</filename>
5437 shows an example syntax.
5442 If you do not want host-based authentication, you can comment out
5447 in <filename>src/Makefile.global</filename>
5450 Note that host-based authentication is turned on by default, and if
5451 you do not take steps A or B above, the out-of-the-box 1.01 will
5452 not allow you to connect to 1.0 databases.
5460 Compile and install 1.01, but DO NOT do the <command>initdb</command> step.
5465 Before doing anything else, terminate your 1.0 postmaster, and
5466 backup your existing <envar>$PGDATA</envar> directory.
5471 Set your <envar>PGDATA</envar> environment variable to your 1.0 databases, but set up
5472 path up so that 1.01 binaries are being used.
5477 Modify the file <filename><envar>$PGDATA</envar>/PG_VERSION</filename> from 5.0 to 5.1
5482 Start up a new 1.01 postmaster
5487 Add the new built-in functions and operators of 1.01 to 1.0
5488 databases. This is done by running the new 1.01 server against
5489 your own 1.0 database and applying the queries attached and saving
5490 in the file 1.0_to_1.01.sql. This can be done easily through <command>psql</command>.
5491 If your 1.0 database is name <literal>testdb</literal>:
5494 % psql testdb -f 1.0_to_1.01.sql
5497 and then execute the following commands (cut and paste from here):
5500 -- add builtin functions that are new to 1.01
5502 create function int4eqoid (int4, oid) returns bool as 'foo'
5503 language 'internal';
5504 create function oideqint4 (oid, int4) returns bool as 'foo'
5505 language 'internal';
5506 create function char2icregexeq (char2, text) returns bool as 'foo'
5507 language 'internal';
5508 create function char2icregexne (char2, text) returns bool as 'foo'
5509 language 'internal';
5510 create function char4icregexeq (char4, text) returns bool as 'foo'
5511 language 'internal';
5512 create function char4icregexne (char4, text) returns bool as 'foo'
5513 language 'internal';
5514 create function char8icregexeq (char8, text) returns bool as 'foo'
5515 language 'internal';
5516 create function char8icregexne (char8, text) returns bool as 'foo'
5517 language 'internal';
5518 create function char16icregexeq (char16, text) returns bool as 'foo'
5519 language 'internal';
5520 create function char16icregexne (char16, text) returns bool as 'foo'
5521 language 'internal';
5522 create function texticregexeq (text, text) returns bool as 'foo'
5523 language 'internal';
5524 create function texticregexne (text, text) returns bool as 'foo'
5525 language 'internal';
5527 -- add builtin functions that are new to 1.01
5529 create operator = (leftarg = int4, rightarg = oid, procedure = int4eqoid);
5530 create operator = (leftarg = oid, rightarg = int4, procedure = oideqint4);
5531 create operator ~* (leftarg = char2, rightarg = text, procedure = char2icregexeq);
5532 create operator !~* (leftarg = char2, rightarg = text, procedure = char2icregexne);
5533 create operator ~* (leftarg = char4, rightarg = text, procedure = char4icregexeq);
5534 create operator !~* (leftarg = char4, rightarg = text, procedure = char4icregexne);
5535 create operator ~* (leftarg = char8, rightarg = text, procedure = char8icregexeq);
5536 create operator !~* (leftarg = char8, rightarg = text, procedure = char8icregexne);
5537 create operator ~* (leftarg = char16, rightarg = text, procedure = char16icregexeq);
5538 create operator !~* (leftarg = char16, rightarg = text, procedure = char16icregexne);
5539 create operator ~* (leftarg = text, rightarg = text, procedure = texticregexeq);
5540 create operator !~* (leftarg = text, rightarg = text, procedure = texticregexne);
5548 <title>Changes</title>
5553 * 1.01 is backwards compatible with 1.0 database provided the user
5554 follow the steps outlined in the MIGRATION_from_1.0_to_1.01 file.
5555 If those steps are not taken, 1.01 is not compatible with 1.0 database.
5558 * added PQdisplayTuples() to libpq and changed monitor and psql to use it
5559 * added NeXT port (requires SysVIPC implementation)
5560 * added CAST .. AS ... syntax
5561 * added ASC and DESC keywords
5562 * added 'internal' as a possible language for CREATE FUNCTION
5563 internal functions are C functions which have been statically linked
5564 into the postgres backend.
5565 * a new type "name" has been added for system identifiers (table names,
5566 attribute names, etc.) This replaces the old char16 type. The
5567 of name is set by the NAMEDATALEN #define in src/Makefile.global
5568 * a readable reference manual that describes the query language.
5569 * added host-based access control. A configuration file ($PGDATA/pg_hba)
5570 is used to hold the configuration data. If host-based access control
5571 is not desired, comment out HBA=1 in src/Makefile.global.
5572 * changed regex handling to be uniform use of Henry Spencer's regex code
5573 regardless of platform. The regex code is included in the distribution
5574 * added functions and operators for case-insensitive regular expressions.
5575 The operators are ~* and !~*.
5576 * pg_dump uses COPY instead of SELECT loop for better performance
5579 * fixed an optimizer bug that was causing core dumps when
5580 functions calls were used in comparisons in the WHERE clause
5581 * changed all uses of getuid to geteuid so that effective uids are used
5582 * psql now returns non-zero status on errors when using -c
5583 * applied public patches 1-14
5589 <sect1 id="release-1-0">
5590 <title>Release 1.0</title>
5593 <title>Release date</title>
5594 <simpara>1995-09-05</simpara>
5598 <title>Changes</title>
5603 * The copyright of <productname>Postgres</productname> 1.0 has been loosened to be freely modifiable
5604 and modifiable for any purpose. Please read the COPYRIGHT file.
5605 Thanks to Professor Michael Stonebraker for making this possible.
5608 * date formats have to be MM-DD-YYYY (or DD-MM-YYYY if you're using
5609 EUROPEAN STYLE). This follows SQL-92 specs.
5610 * "delimiters" is now a keyword
5613 * sql LIKE syntax has been added
5614 * copy command now takes an optional USING DELIMITER specification.
5615 delimiters can be any single-character string.
5616 * IRIX 5.3 port has been added.
5617 Thanks to Paul Walmsley and others.
5618 * updated pg_dump to work with new libpq
5619 * \d has been added psql
5620 Thanks to Keith Parks
5621 * regexp performance for architectures that use POSIX regex has been
5622 improved due to caching of precompiled patterns.
5623 Thanks to Alistair Crooks
5624 * a new version of libpq++
5625 Thanks to William Wanders
5628 * arbitrary userids can be specified in the createuser script
5629 * \c to connect to other databases in psql now works.
5630 * bad pg_proc entry for float4inc() is fixed
5631 * users with usecreatedb field set can now create databases without
5632 having to be usesuper
5633 * remove access control entries when the entry no longer has any
5635 * fixed non-portable datetimes implementation
5636 * added kerberos flags to the src/backend/Makefile
5637 * libpq now works with kerberos
5638 * typographic errors in the user manual have been corrected.
5639 * btrees with multiple index never worked, now we tell you they don't
5640 work when you try to use them
5646 <sect1 id="release-0-03">
5647 <title><productname>Postgres95</productname> Release 0.03</title>
5650 <title>Release date</title>
5651 <simpara>1995-07-21</simpara>
5655 <title>Changes</title>
5658 Incompatible changes:
5659 * BETA-0.3 IS INCOMPATIBLE WITH DATABASES CREATED WITH PREVIOUS VERSIONS
5660 (due to system catalog changes and indexing structure changes).
5661 * double-quote (") is deprecated as a quoting character for string literals;
5662 you need to convert them to single quotes ('). <!-- " -->
5663 * name of aggregates (eg. int4sum) are renamed in accordance with the
5664 SQL standard (eg. sum).
5665 * CHANGE ACL syntax is replaced by GRANT/REVOKE syntax.
5666 * float literals (eg. 3.14) are now of type float4 (instead of float8 in
5667 previous releases); you might have to do typecasting if you depend on it
5668 being of type float8. If you neglect to do the typecasting and you assign
5669 a float literal to a field of type float8, you may get incorrect values
5671 * LIBPQ has been totally revamped so that frontend applications
5672 can connect to multiple backends
5673 * the usesysid field in pg_user has been changed from int2 to int4 to
5674 allow wider range of Unix user ids.
5675 * the netbsd/freebsd/bsd o/s ports have been consolidated into a
5676 single BSD44_derived port. (thanks to Alistair Crooks)
5678 SQL standard-compliance (the following details changes that makes postgres95
5679 more compliant to the SQL-92 standard):
5680 * the following SQL types are now built-in: smallint, int(eger), float, real,
5681 char(N), varchar(N), date and time.
5683 The following are aliases to existing postgres types:
5685 integer, int -> int4
5686 float, real -> float4
5687 char(N) and varchar(N) are implemented as truncated text types. In
5688 addition, char(N) does blank-padding.
5689 * single-quote (') is used for quoting string literals; '' (in addition to
5690 \') is supported as means of inserting a single quote in a string
5691 * SQL standard aggregate names (MAX, MIN, AVG, SUM, COUNT) are used
5692 (Also, aggregates can now be overloaded, i.e. you can define your
5693 own MAX aggregate to take in a user-defined type.)
5694 * CHANGE ACL removed. GRANT/REVOKE syntax added.
5695 - Privileges can be given to a group using the "GROUP" keyword.
5697 GRANT SELECT ON foobar TO GROUP my_group;
5698 The keyword 'PUBLIC' is also supported to mean all users.
5700 Privileges can only be granted or revoked to one user or group
5703 "WITH GRANT OPTION" is not supported. Only class owners can change
5705 - The default access control is to to grant users readonly access.
5706 You must explicitly grant insert/update access to users. To change
5707 this, modify the line in
5708 src/backend/utils/acl.h
5709 that defines ACL_WORLD_DEFAULT
5712 * the bug where aggregates of empty tables were not run has been fixed. Now,
5713 aggregates run on empty tables will return the initial conditions of the
5714 aggregates. Thus, COUNT of an empty table will now properly return 0.
5715 MAX/MIN of an empty table will return a tuple of value NULL.
5716 * allow the use of \; inside the monitor
5717 * the LISTEN/NOTIFY asynchronous notification mechanism now work
5718 * NOTIFY in rule action bodies now work
5719 * hash indexes work, and access methods in general should perform better.
5720 creation of large btree indexes should be much faster. (thanks to Paul
5723 Other changes and enhancements:
5724 * addition of an EXPLAIN statement used for explaining the query execution
5725 plan (eg. "EXPLAIN SELECT * FROM EMP" prints out the execution plan for
5727 * WARN and NOTICE messages no longer have timestamps on them. To turn on
5728 timestamps of error messages, uncomment the line in
5729 src/backend/utils/elog.h:
5730 /* define ELOG_TIMESTAMPS */
5731 * On an access control violation, the message
5732 "Either no such class or insufficient privilege"
5733 will be given. This is the same message that is returned when
5734 a class is not found. This dissuades non-privileged users from
5735 guessing the existence of privileged classes.
5736 * some additional system catalog changes have been made that are not
5737 visible to the user.
5740 * The -oid option has been added to the "pg_result" tcl command.
5741 pg_result -oid returns oid of the last tuple inserted. If the
5742 last command was not an INSERT, then pg_result -oid returns "".
5743 * the large object interface is available as pg_lo* tcl commands:
5744 pg_lo_open, pg_lo_close, pg_lo_creat, etc.
5746 Portability enhancements and New Ports:
5747 * flex/lex problems have been cleared up. Now, you should be able to use
5748 flex instead of lex on any platforms. We no longer make assumptions of
5749 what lexer you use based on the platform you use.
5750 * The Linux-ELF port is now supported. Various configuration have been
5751 tested: The following configuration is known to work:
5752 kernel 1.2.10, gcc 2.6.3, libc 4.7.2, flex 2.5.2, bison 1.24
5753 with everything in ELF format,
5756 * ipcclean added to the distribution
5757 ipcclean usually does not need to be run, but if your backend crashes
5758 and leaves shared memory segments hanging around, ipcclean will
5759 clean them up for you.
5762 * the user manual has been revised and libpq documentation added.
5768 <sect1 id="release-0-02">
5769 <title><productname>Postgres95</productname> Release 0.02</title>
5772 <title>Release date</title>
5773 <simpara>1995-05-25</simpara>
5777 <title>Changes</title>
5781 Incompatible changes:
5782 * The SQL statement for creating a database is 'CREATE DATABASE' instead
5783 of 'CREATEDB'. Similarly, dropping a database is 'DROP DATABASE' instead
5784 of 'DESTROYDB'. However, the names of the executables 'createdb' and
5785 'destroydb' remain the same.
5788 * pgperl - a Perl (4.036) interface to Postgres95
5789 * pg_dump - a utility for dumping out a postgres database into a
5790 script file containing query commands. The script files are in a ASCII
5791 format and can be used to reconstruct the database, even on other
5792 machines and other architectures. (Also good for converting
5793 a Postgres 4.2 database to Postgres95 database.)
5795 The following ports have been incorporated into postgres95-beta-0.02:
5796 * the NetBSD port by Alistair Crooks
5797 * the AIX port by Mike Tung
5798 * the Windows NT port by Jon Forrest (more stuff but not done yet)
5799 * the Linux ELF port by Brian Gallew
5801 The following bugs have been fixed in postgres95-beta-0.02:
5802 * new lines not escaped in COPY OUT and problem with COPY OUT when first
5804 * cannot type return to use the default user id in createuser
5805 * SELECT DISTINCT on big tables crashes
5806 * Linux installation problems
5807 * monitor doesn't allow use of 'localhost' as PGHOST
5808 * psql core dumps when doing \c or \l
5809 * the "pgtclsh" target missing from src/bin/pgtclsh/Makefile
5810 * libpgtcl has a hard-wired default port number
5811 * SELECT DISTINCT INTO TABLE hangs
5812 * CREATE TYPE doesn't accept 'variable' as the internallength
5813 * wrong result using more than 1 aggregate in a SELECT
5819 <sect1 id="release-0-01">
5820 <title><productname>Postgres95</productname> Release 0.01</title>
5823 <title>Release date</title>
5824 <simpara>1995-05-01</simpara>
5833 <sect1 id="timing-results">
5834 <title>Timing Results</title>
5837 These timing results are from running the regression test with the commands
5840 % cd src/test/regress
5846 Timing under Linux 2.0.27 seems to have a roughly 5% variation from run
5847 to run, presumably due to the scheduling vagaries of multitasking systems.
5851 <title>Version 6.5</title>
5854 As has been the case for previous releases, timing between
5855 releases is not directly comparable since new regression tests
5856 have been added. In general, 6.5 is faster than previous
5861 Timing with <function>fsync()</function> disabled:
5865 02:00 Dual Pentium Pro 180, 224MB, UW-SCSI, Linux 2.0.36, gcc 2.7.2.3 -O2 -m486
5866 04:38 Sparc Ultra 1 143MHz, 64MB, Solaris 2.6
5871 Timing with <function>fsync()</function> enabled:
5875 04:21 Dual Pentium Pro 180, 224MB, UW-SCSI, Linux 2.0.36, gcc 2.7.2.3 -O2 -m486
5878 For the <systemitem class="osname">Linux</systemitem> system above, using <acronym>UW-SCSI</acronym> disks rather than (older) <acronym>IDE</acronym>
5879 disks leads to a 50% improvement in speed on the regression test.
5884 <title>Version 6.4beta</title>
5887 The times for this release are not directly comparable to those for previous releases
5888 since some additional regression tests have been included.
5889 In general, however, 6.4 should be slightly faster than the previous release (thanks, Bruce!).
5894 02:26 Dual Pentium Pro 180, 96MB, UW-SCSI, Linux 2.0.30, gcc 2.7.2.1 -O2 -m486
5900 <title>Version 6.3</title>
5903 The times for this release are not directly comparable to those for previous releases
5904 since some additional regression tests have been included and some obsolete tests involving
5905 time travel have been removed.
5906 In general, however, 6.3 is substantially faster than previous releases (thanks, Bruce!).
5911 02:30 Dual Pentium Pro 180, 96MB, UW-SCSI, Linux 2.0.30, gcc 2.7.2.1 -O2 -m486
5912 04:12 Dual Pentium Pro 180, 96MB, EIDE, Linux 2.0.30, gcc 2.7.2.1 -O2 -m486
5918 <title>Version 6.1</title>
5923 06:12 Pentium Pro 180, 32MB, EIDE, Linux 2.0.30, gcc 2.7.2 -O2 -m486
5924 12:06 P-100, 48MB, Linux 2.0.29, gcc
5925 39:58 Sparc IPC 32MB, Solaris 2.5, gcc 2.7.2.1 -O -g
5933 <!-- Keep this comment at the end of the file
5938 sgml-minimize-attributes:nil
5939 sgml-always-quote-attributes:t
5942 sgml-parent-document:nil
5943 sgml-default-dtd-file:"./reference.ced"
5944 sgml-exposed-tags:nil
5945 sgml-local-catalogs:("/usr/lib/sgml/catalog")
5946 sgml-local-ecat-files:nil