-<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.557 2007/11/30 03:27:48 momjian Exp $ -->
+<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.558 2007/12/02 03:47:11 tgl Exp $ -->
<!--
Typical markup:
<note>
<title>Release date</title>
<simpara>2007-12-??</simpara>
- <para>CURRENT AS OF 2007-11-29</>
+ <para>CURRENT AS OF 2007-12-01</>
</note>
<sect2>
<listitem>
<para>
- <command>ALTER SEQUENCE</> no longer affects <function>currval()</>
- (Tom)
+ <command>ALTER SEQUENCE</> no longer affects the sequence's
+ <function>currval()</> state (Tom)
</para>
</listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ Disallow database encodings that are inconsistent with the server's
+ locale setting (Tom)
+ </para>
+
+ <para>
+ On most platforms, <literal>C</> locale is the only locale that
+ will work with any database encoding. Other locale settings imply
+ a specific encoding and will misbehave if the database encoding
+ is something different. (Typical symptoms include bogus textual
+ sort order and wrong results from <function>upper()</> or
+ <function>lower()</>.) The server now rejects attempts to create
+ databases that have an incompatible encoding.
+ </para>
+ </listitem>
+
<listitem>
<para>
Ensure that <function>chr()</function> cannot create
</para>
</listitem>
+ <listitem>
+ <para>
+ Avoid incrementing the command counter after a read-only command (Tom)
+ </para>
+
+ <para>
+ There was formerly a hard limit of 2<superscript>32</>
+ (4 billion) commands per transaction. Now only commands that
+ actually changed the database count, so while this limit still
+ exists, it should be significantly less annoying.
+ </para>
+ </listitem>
+
<listitem>
<para>
Create a dedicated <acronym>WAL</> writer process to off-load
</para>
</listitem>
+ <listitem>
+ <para>
+ Speed up operator lookup for cases with non-exact datatype matches (Tom)
+ </para>
+ </listitem>
+
</itemizedlist>
</sect3>
</para>
</listitem>
+ <listitem>
+ <para>
+ Guard against a very-low-probability data loss scenario by preventing
+ re-use of a deleted table's relfilenode until after the next
+ checkpoint (Heikki)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <command>CREATE CONSTRAINT TRIGGER</>
+ to convert old-style foreign key trigger definitions into regular
+ foreign key constraints (Tom)
+ </para>
+
+ <para>
+ This will ease porting of foreign key constraints carried forward from
+ pre-7.3 databases, if they were never converted using
+ <filename>contrib/adddepend</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <literal>DEFAULT NULL</> to override inherited defaults (Tom)
+ </para>
+
+ <para>
+ <literal>DEFAULT NULL</> was formerly considered a noise phrase, but it
+ should (and now does) override non-null defaults that would otherwise
+ be inherited from a parent table or domain.
+ </para>
+ </listitem>
+
<listitem>
<para>
Add new encodings EUC_JIS_2004 and SHIFT_JIS_2004 (Tatsuo)
<para>
Change server startup log message from <quote>database system is
ready</quote> to <quote>database system is ready to accept
- connections</quote>
+ connections</quote>, and adjust its timing
+ </para>
+
+ <para>
+ The message now appears only when the postmaster is really ready
+ to accept connections.
</para>
</listitem>
</para>
<para>
- CSV-format log files can be loaded into a database table for subsequent
- analysis.
+ CSV-format log files can easily be loaded into a database table for
+ subsequent analysis.
</para>
</listitem>
<listitem>
<para>
- Fix pgstats counting of live and dead tuples to recognize that
+ Fix statistical counting of live and dead tuples to recognize that
committed and aborted transactions have different effects (Tom)
</para>
</listitem>
Create a general mechanism that supports casts to and from the
standard string types (<type>TEXT</type>, <type>VARCHAR</type>,
<type>CHAR</type>) for <emphasis>every</emphasis> datatype, by
- invoking the datatype's I/O functions (Tom) XXX examples?
+ invoking the datatype's I/O functions (Tom)
</para>
<para>
+ Previously, such casts were available only for types that had
+ specialized function(s) for the purpose.
These new casts are assignment-only in the to-string direction,
explicit-only in the other direction, and therefore should create no
- surprising behavior. Various
- datatype-specific casting functions that were equivalent to this
- behavior were removed.
+ surprising behavior.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <literal>UNION</> and related constructs to return a domain
+ type, when all inputs are of that domain type (Tom)
+ </para>
+
+ <para>
+ Formerly, the output would be considered to be of the domain's base
+ type.
</para>
</listitem>
comparisons, if the data types have compatible hash functions.
Currently, cross-data-type hashing support exists for
<type>smallint</type>/<type>integer</type>/<type>bigint</type>,
- and for <type>float4</type>/<type>float8</type>. XXX how do you do
- hash aggregate two different data types
+ and for <type>float4</type>/<type>float8</type>.
</para>
</listitem>
<para>
This allows a user-defined type to take a modifier, like
- <type>ssnum(7)</>. Previously only
- predefined system data types could have modifiers.
+ <type>ssnum(7)</>. Previously only built-in
+ data types could have modifiers.
</para>
</listitem>
<listitem>
<para>
Implement <command>CREATE TABLE LIKE ... INCLUDING
- INDEXES</command> (Trevor Hardcastle, Nikhil S, Neil)
+ INDEXES</command> (Trevor Hardcastle, Nikhil Sontakke, Neil)
</para>
</listitem>
snapshot that does not change during the transaction. This function
allows the snapshot to be discarded and a new snapshot loaded during
the next statistics query. This is particularly useful for PL/PgSQL
- functions which are confined to a single transaction.
+ functions, which are confined to a single transaction.
</para>
</listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ Make qualification of variables with block labels work properly (Tom)
+ </para>
+
+ <para>
+ Formerly, outer-level block labels could unexpectedly interfere with
+ recognition of inner-level record or row references.
+ </para>
+ </listitem>
+
<listitem>
<para>
Tighten requirements for <literal>FOR</literal> loop
Prevent non-positive <literal>STEP</> values, and handle
loop overflows.
</para>
-
</listitem>
<listitem>
<para>
Allow type-name arguments to PL/Perl
<function>spi_prepare()</function> to be data type aliases in
- addition to names in <literal>pg_type</literal> (Andrew)
+ addition to names found in <literal>pg_type</literal> (Andrew)
</para>
</listitem>
<para>
Allow type-name arguments to PL/Python
<function>plpy.prepare()</function> to be data type aliases in
- addition to names in <literal>pg_type</literal> (Andrew)
+ addition to names found in <literal>pg_type</literal> (Andrew)
</para>
</listitem>
<listitem>
<para>
Allow type-name arguments to PL/Tcl <function>spi_prepare</> to
- be data type aliases in addition to names in
+ be data type aliases in addition to names found in
<literal>pg_type</literal> (Andrew)
</para>
</listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ Correctly detect and report errors while reading a <literal>-f</>
+ input file (Peter)
+ </para>
+ </listitem>
+
</itemizedlist>
</sect3>
<listitem>
<para>
- Add <application>pg_ctl</> timeout parameter (Bruce)
+ Add a <literal>-t</> (timeout) parameter to <application>pg_ctl</>
+ (Bruce)
</para>
<para>
This controls how long <application>pg_ctl</> will wait when waiting
- for server startup or shutdown.
+ for server startup or shutdown. Formerly the timeout was hard-wired
+ as 60 seconds.
</para>
</listitem>
<listitem>
<para>
- Add <application>pg_ctl</> option to control generation
- of core dumps (Andrew)
+ Add
a <application>pg_ctl</> option to control generation
+ of server core dumps (Andrew)
</para>
</listitem>
<para>
If this returns true after a failed connection attempt, a client
application should prompt the user for a password. In the past
- applications have had to check for a specific error messages to
+ applications have had to check for a specific error message string to
decide whether a password is needed; that approach is now
deprecated.
</para>
<listitem>
<para>
- Make ecpg libraries export only necessary API symbols (Michael)
+ Make the ecpg libraries export only necessary API symbols (Michael)
</para>
</listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ Drastically reduce postmaster's memory usage when it has many child
+ processes (Magnus)
+ </para>
+ </listitem>
+
<listitem>
<para>
Allow regression tests to be started by an administrative
<listitem>
<para>
- Allow execution of cursor commands through
- <function>SPI_execute</function> (Tom)
+ Add cursor-related functionality in SPI (Pavel Stehule)
</para>
<para>
- The macro <literal>SPI_ERROR_CURSOR</> still exists but will
- never be returned.
+ Allow access to the cursor-related planning options, and add
+ <command>FETCH</>/<command>MOVE</> routines.
</para>
</listitem>
<listitem>
<para>
- SPI plan pointers are now <literal>SPIPlanPtr</> instead of
- <literal>void *</> (Tom)
+ Allow execution of cursor commands through
+ <function>SPI_execute</function> (Tom)
</para>
<para>
- This does not break application code, but switching is
- recommended to help catch simple programming mistakes.
+ The macro <literal>SPI_ERROR_CURSOR</> still exists but will
+ never be returned.
</para>
</listitem>
<listitem>
<para>
- Add cursor-related functionality in SPI (Pavel Stehule)
+ SPI plan pointers are now declared as <literal>SPIPlanPtr</> instead of
+ <literal>void *</> (Tom)
</para>
<para>
- Allow access to the cursor-related planning options, and add
- <command>FETCH</>/<command>MOVE</> routines.
+ This does not break application code, but switching is
+ recommended to help catch simple programming mistakes.
</para>
</listitem>
<listitem>
<para>
- Add <application>configure</> <literal>--enable-profiling</>
+ Add <application>configure</> option <literal>--enable-profiling</>
to enable code profiling (works only with <application>gcc</>)
- (Korry Douglas and Nikhil S)
+ (Korry Douglas and Nikhil Sontakke)
</para>
</listitem>
<listitem>
<para>
- Add <application>configure</> <literal>--with-system-tzdata</>
- to use the operating system time zone database (Peter)
+ Add <application>configure</> option <literal>--with-system-tzdata</>
+ to use the operating system's time zone database (Peter)
</para>
</listitem>
</para>
<para>
- Documentions builds will now build indexes by default, unless
- <literal>draft</> is used.
+ Unless <literal>draft</> is used, the documentation build will
+ now be repeated if necessary to ensure the index is up-to-date.
</para>
</listitem>
<listitem>
<para>
- Add tas() support for Renesas' M32R processor (Kazuhiro Inaoka)
+ Add <function>tas()</> support for Renesas' M32R processor
+ (Kazuhiro Inaoka)
</para>
</listitem>
</para>
</listitem>
+ <listitem>
+ <para>
+ Add <filename>contrib/dict_int</filename>,
+ <filename>contrib/dict_xsyn</filename>, and
+ <filename>contrib/test_parser</filename> modules to provide
+ sample add-on text search dictionary templates and parsers
+ (Sergey Karpov)
+ </para>
+ </listitem>
+
<listitem>
<para>
Allow <application>contrib/pgbench</> to set the fillfactor (Pavan
projects / postgresql / commitdiff