--- /dev/null
+<!-- doc/src/sgml/release-9.2.sgml -->
+<!-- See header comment in release.sgml about typical markup -->
+
+ <sect1 id="release-9-2">
+ <title>Release 9.2</title>
+
+ <note>
+ <title>Release Date</title>
+ <simpara>2012-??-??</simpara>
+ <simpara>CURRENT AS OF 2012-05-09</simpara>
+
+ </note>
+
+ <sect2>
+ <title>Overview</title>
+
+ <para>
+ NARRATIVE HERE. Major enhancements include:
+ </para>
+
+ <itemizedlist>
+ <listitem><para>MAJOR LIST HERE</para></listitem>
+ <!-- This list duplicates items below, but without authors or details-->
+
+ </itemizedlist>
+
+ <para>
+ The above items are explained in more detail in the sections below.
+ </para>
+
+ </sect2>
+
+ <sect2>
+
+ <title>Migration to Version 9.2</title>
+
+ <para>
+ A dump/restore using <application>pg_dump</application>, or use of
+ <application>pg_upgrade</application>, is required for those wishing
+ to migrate data from any previous release.
+ </para>
+
+ <para>
+ Version 9.2 contains a number of changes that may affect compatibility
+ with previous releases. Observe the following incompatibilities:
+ </para>
+
+ <sect3>
+ <title>Functions</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Ensure that <link
+ linkend="functions-xml-processing"><function>xpath()</></link>
+ escapes special characters in string values (Florian Pflug,
+ Radoslaw Smogura)
+ </para>
+
+ <para>
+ Without this it is possible to output illegal
+ <acronym>XML</acronym>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove <link linkend="hstore">hstore</link>'s <literal>=></>
+ operator (Robert Haas, David Wheeler)
+ </para>
+
+ <para>
+ Users should now use hstore(text, text). Since
+ <productname>PostgreSQL</productname> 9.0, we have emitted a
+ warning message when an operator named => is created because
+ the <acronym>SQL</acronym> standard reserves that token for
+ another use.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <link
+ linkend="functions-admin-dbobject"><function>pg_relation_size()</></link>
+ and friends return NULL if the object does not exist (Phil Sorber)
+ </para>
+
+ <para>
+ This prevents queries that call these functions from returning
+ errors during concurrent drop operations.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove the <link
+ linkend="catalog-pg-tablespace"><structname>spclocation</></link>
+ field from <structname>pg_tablespace</> (Magnus Hagander,
+ Tom Lane))
+ </para>
+
+ <para>
+ This field was duplicative of the symbolic links already
+ present in the data directory. This allows tablespace
+ directories to be moved while the server is down. Also add
+ <function>pg_tablespace_location()</> to allow querying of the
+ symbolic links.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title>Temporal Functions</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Have <link
+ linkend="functions-datetime-extract"><function>EXTRACT</></link> of
+ a non-timezone-aware value measure the epoch from local midnight,
+ not <acronym>UTC</acronym> midnight (Tom Lane)
+ </para>
+
+ <para>
+ Having these computations depend on <acronym>UTC</acronym>
+ was inconsistent. The old behavior is available by casting the
+ value to timestamp with time zone.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Properly parse time strings with trailing <literal>yesterday</>,
+ <literal>today</>, and <literal>tomorrow</> (Dean Rasheed)
+ </para>
+
+ <para>
+ Previously, <command>SELECT '04:00:00
+ yesterday'::timestamp</command> returned yesterday's date at
+ midnight.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <link
+ linkend="functions-formatting"><function>to_date()</></link> and
+ <function>to_timestamp()</> to wrap incomplete dates toward 2020
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ Previously supplied years and year masks of less than four digits
+ wrapped inconsistently.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Object Modification</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Prevent <link linkend="SQL-ALTERDOMAIN"><command>ALTER
+ DOMAIN</command></link> from working on non-domain types (Peter
+ Eisentraut)
+ </para>
+
+ <para>
+ Owner and schema changes were previously possible on non-domain
+ types.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ No longer auto-lowercase procedural language names (Robert Haas)
+ </para>
+
+ <para>
+ While unquoted language identifiers are still lowercased, double
+ and single-quoted identifiers are no longer down-cased.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Command-Line Tools</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Provide consistent backquote, variable
+ expansion, and quoted substring behavior in <link
+ linkend="APP-PSQL"><application>psql</></link> meta-command
+ arguments (Tom Lane)
+ </para>
+
+ <para>
+ Previously, such usage was only properly expanded when isolated by
+ whitespace, e.g. <literal>'FOO'BAR</> was output as <literal>FOO
+ BAR</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ No longer treat <link
+ linkend="APP-CLUSTERDB"><application>clusterdb</></link>
+ table names as double-quoted; no longer treat <link
+ linkend="APP-REINDEXDB"><application>reindexdb</></link> table
+ and index names as double-quoted (Bruce Momjian)
+ </para>
+
+ <para>
+ Users must supply double-quotes in the command arguments to
+ accomplish double-quoting behavior.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Disable prompting for the user name in <link
+ linkend="APP-DROPDB"><application>dropdb</></link> unless
+ <option>--interactive</> is specified (Peter Eisentraut, Josh
+ Kupershmidt)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ No longer have <link
+ linkend="APP-CREATEUSER"><application>createuser</></link> prompt
+ for settings (Peter Eisentraut, Josh Kupershmidt)
+ </para>
+
+ <para>
+ Previously <application>createuser</> prompted regarding various
+ user settings.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove <link linkend="APP-INITDB"><application>initdb</></link>
+ support for the crypt authentication method (Peter Eisentraut)
+ </para>
+
+ <para>
+ This was removed from the backend years ago.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Server Settings</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Remove the <filename>postgresql.conf</filename> setting
+ <varname>silent_mode</> (Heikki Linnakangas)
+ </para>
+
+ <para>
+ This behavior could already be accomplished with <command>pg_ctl
+ -l postmaster.log</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove <acronym>GUC</acronym> <varname>wal_sender_delay</>,
+ as it is no longer needed (Tom Lane)
+ </para>
+
+ <para>
+ The new "latch" capability made this setting unnecessary.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove the <varname>custom_variable_classes</>
+ <filename>postgresql.conf</filename> parameter (Tom Lane)
+ </para>
+
+ <para>
+ The checking provided by this setting was dubious. Now any
+ setting can be prefixed by any class name.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+ </sect3>
+
+ <sect3>
+ <title>Monitoring</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Rename <link
+ linkend="monitoring-stats-views-table"><structname>pg_stat_activity</></link><structname>.procpid</>
+ to <literal>pid</>, to match other system tables (Magnus Hagander)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Create a separate <structname>pg_stat_activity</> column to
+ report state information, e.g. idle (Scott Mead, Magnus Hagander,
+ Greg Smith)
+ </para>
+
+ <para>
+ The previous query values are preserved, allowing for enhanced
+ analysis.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change all <acronym>SQL</acronym>-level statistics timing values
+ to float8-stored milliseconds (Tom Lane)
+ </para>
+
+ <para>
+ The columns affected are:
+ <structname>pg_stat_user_functions.total_time</>,
+ <structname>pg_stat_user_functions.self_time</>,
+ <structname>pg_stat_xact_user_functions.total_time</>,
+ <structname>pg_stat_xact_user_functions.self_time</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change <application>pg_stat_statements</>'
+ <structname>total_time</> column to be measured in milliseconds
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Other Incompatibilities</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add libpq <link linkend="libpq-ssl">parameters</link> for
+ specifying the locations of server-side <acronym>SSL</acronym>
+ files (Peter Eisentraut)
+ </para>
+
+ <para>
+ This allows changing the location of the files that were previously
+ hard-coded to <filename>server.crt</>, <filename>server.key</>,
+ <filename>root.crt</>, <filename>root.crl</>. <acronym>CA</>
+ (crt) and <acronym>CRL</acronym> files no longer have default
+ names, and if specified, these files must exist.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <para>
+ Below you will find a detailed account of the changes between
+ <productname>PostgreSQL</productname> 9.2 and the previous major
+ release.
+ </para>
+
+ <sect3>
+ <title>Server</title>
+
+ <sect4>
+ <title>Performance</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Allow queries to retrieve data only from indexes, avoiding heap
+ access (Robert Haas, Ibrar Ahmed, Tom Lane)
+ </para>
+
+ <para>
+ This is possible for heap pages with exclusively all-visible
+ tuples, as reported by the visibility map.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow frequently uncontended locks to be recorded using a new
+ lightweight lock mechanism (Robert Haas, Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Move the frequently accessed members of the <structname>PGPROC</>
+ shared memory array to a separate section, for performance (Pavan
+ Deolasee, Heikki Linnakangas, Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce overhead of creating virtual transaction id locks ((Robert
+ Haas, Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce overhead for shared invalidation cache messages (Robert
+ Haas, Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance of transactions using many savepoints (Simon
+ Riggs, Robert Haas) PARTIALLY REVERTED. KEEP?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve <command>COPY</command> performance by adding tuples to
+ the heap in batches (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Make the visibility map crash-safe (Robert Haas, Noah Misch)
+ </para>
+
+ <para>
+ This helps vacuum be more efficient, and is necessary for
+ index-only scans.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve GiST box and point index performance by producing better
+ trees with less memory allocation overhead (Alexander Korotkov,
+ Heikki Linnakangas, Kevin Grittner)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow hint bits to be set sooner for temporary and unlogged tables
+ (Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce checkpoints and <acronym>WAL</acronym> traffic on low
+ activity servers (Simon Riggs)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow sorting to be performed by inlined and faster,
+ non-<acronym>SQL</acronym>-callable comparison functions (Peter
+ Geoghegan, Robert Haas, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add the <link linkend="SPGiST">SP-GiST</link> (Space-Partitioned
+ GiST) index access method (Teodor Sigaev, Oleg Bartunov, Tom Lane,
+ Robert Haas)
+ </para>
+
+ <para>
+ SP-GiST is comparable to GiST in flexibility, but supports
+ non-balanced partitioned search structures rather than balanced
+ trees. CLARIFY?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve GiST index build times (Alexander Korotkov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Take fewer <acronym>MVCC</acronym> snapshots, for performance
+ (Robert Haas, Dimitri Fontaine)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have the number of clog buffer count scale based on <link
+ linkend="guc-shared-buffers"><varname>shared_buffers</></link>
+ (Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce the overhead of serializable isolation level locks (Dan
+ Ports, Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance of <acronym>WAL</acronym> writes when multiple
+ transactions commit at the same time (Peter Geoghegan, Simon Riggs,
+ Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve PowerPC and Itanium spinlock performance (Manabu Ori,
+ Tom Lane, Robert Haas)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Process Management</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Create a dedicated worker process to perform checkpoints (Simon
+ Riggs, Dickson Guedes)
+ </para>
+
+ <para>
+ Formerly the background writer did dirty page writing and
+ checkpointing.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve asynchronous commit behavior by waking up sooner (Simon
+ Riggs)
+ </para>
+
+ <para>
+ Previously, only <link
+ linkend="guc-wal-writer-delay"><varname>wal_writer_delay</></link>
+ triggered <acronym>WAL</acronym> flushing to disk; now filling a
+ <acronym>WAL</acronym> buffer also triggers <acronym>WAL</acronym>
+ writes.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow backends to detect postmaster death via a pipe read failure,
+ rather than polling (Peter Geoghegan, Heikki Linnakangas)
+ </para>
+
+ <para>
+ These are internally called "latches".
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow the <link linkend="pg-stat-bgwriter-view">bgwriter</link>,
+ <link linkend="guc-wal-writer-delay">walwriter</link>, and <link
+ linkend="monitoring-stats">statistics collector</link> to sleep
+ more efficiently during periods of inactivity (Peter Geoghegan,
+ Heikki Linnakangas, Tom Lane)
+ </para>
+
+ <para>
+ This reduces <acronym>CPU</acronym> wake-ups.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Pass the safe number of file descriptors to Windows processes
+ (Heikki Linnakangas)
+ </para>
+
+ <para>
+ This allows Windows sessions to cache more open file descriptors.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Optimizer</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve the ability of the planner to choose parameterized plans
+ (Tom Lane)
+ </para>
+
+ <para>
+ A prepared statement is now parsed, analyzed, and rewritten,
+ but not necessarily planned. When the prepared plan is executed
+ with parameters, the planner might replan it for every constant,
+ or it might execute a generic plan if its cost is close to that
+ of a constant-specific plan. CLARIFY
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow the optimizer to use <literal>CHECK</> constraints defined
+ on tables referenced in subqueries in planning decisions (Tom Lane)
+ </para>
+
+ <para>
+ This is only enabled when <link
+ linkend="guc-constraint-exclusion"><literal>constraint_exclusion
+ = on</></link>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <literal>indexedcol op ANY(ARRAY[...])</> conditions to be
+ used in plain indexscans (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve heuristics for determining the type of unknown values by
+ considering other data types involved in the operation (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow better matching of index columns with non-default operator
+ qualifications (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve the planner's ability to use nested loops with inner
+ index scans (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support <function>MIN</>/<function>MAX</> index optimizations on
+ boolean columns (Marti Raudsepp, Abhijit Menon-Sen)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect5>
+ <title>Optimizer Statistics</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Improve the ability to use statistics on columns referenced in
+ subqueries (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve optimizer estimation for subqueries using
+ <literal>DISTINCT</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Collect and use element-frequency statistics for arrays (Alexander
+ Korotkov, Noah Misch, Nathan Boley, Tom Lane, Daniele Varrazzo)
+ </para>
+
+ <para>
+ This patch improves selectivity estimation for the array <@,
+ &&, and @> (containment and overlaps) array operators.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve costing of partial indexes (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow analyze statistics to be collected for foreign tables
+ (Etsuro Fujita, Shigeru Hanada, Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect5>
+
+ </sect4>
+
+ <sect4>
+ <title>Authentication</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Do not assume roles and <literal>samerole</> specified in <link
+ linkend="auth-pg-hba-conf"><filename>pg_hba.conf</filename></link>
+ include superusers (Andrew Dunstan, Robert Haas)
+ </para>
+
+ <para>
+ This makes it easier to use reject lines with group roles.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Make superuser imply replication privilege (Noah Misch)
+ </para>
+
+ <para>
+ This avoids the need to explicitly assign such privileges.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Adjust <filename>pg_hba.conf</filename> processing to more
+ consistently handle token parsing (Brendan Jurd, Álvaro
+ Herrera, Pavel Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Disallow empty <filename>pg_hba.conf</filename> files (Tom Lane)
+ </para>
+
+ <para>
+ This was done to more quickly report misconfiguration.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Monitoring</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Attempt to log the current query string before a backend crash
+ (Marti Raudsepp, <acronym>PDXPUG</>, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Make logging of autovacuum I/O activity more verbose (Greg Smith,
+ Noah Misch)
+ </para>
+
+ <para>
+ This logging is triggered by <link
+ linkend="guc-log-autovacuum-min-duration"><varname>log_autovacuum_min_duration</></link>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <acronym>WAL</acronym> replay report failures sooner
+ (Fujii Masao)
+ </para>
+
+ <para>
+ There were some cases where failures were only reported once the
+ server went into master mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link
+ linkend="functions-admin-backup"><function>pg_xlog_location_diff()</></link>
+ to simplify xlog comparisons (Euler Taveira de Oliveira, Fujii
+ Masao, Magnus Hagander)
+ </para>
+
+ <para>
+ This is useful for computing replication lag.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support configurable eventlog application names on Windows (MauMau,
+ Magnus Hagander)
+ </para>
+
+ <para>
+ This allows different instances to use the eventlog
+ with different identifiers, by setting the <link
+ linkend="guc-event-source"><varname>event_source</></link>
+ <acronym>GUC</acronym>, which is similar to how <link
+ linkend="guc-syslog-ident"><varname>syslog_ident</></link> works.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change "unexpected EOF" message to <literal>DEBUG1</> level
+ (Magnus Hagander)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Statistical Views</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Track temporary file sizes and file counts in the <link
+ linkend="monitoring-stats-views"><structname>pg_stat_database</></link>
+ system view (Tomas Vondra)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a deadlock counter to the <structname>pg_stat_database</>
+ system view (Magnus Hagander, Jaime Casanova)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <acronym>GUC</acronym> setting <link
+ linkend="guc-track-io-timing"><varname>track_io_timing</></link>
+ to track I/O timings (Ants Aasma, Greg Smith, Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Report checkpoint timing information in <link
+ linkend="pg-stat-bgwriter-view"><structname>pg_stat_bgwriter</></link>
+ (Greg Smith, Peter Geoghegan, Robert Haas)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Server Settings</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow <link
+ linkend="guc-deadlock-timeout"><varname>deadlock_timeout</></link>
+ to be set per-session by superusers, not just per-cluster (Noah
+ Misch, Shigeru Hanada)
+ </para>
+
+ <para>
+ This allows <varname>deadlock_timeout</> to be reduced for
+ transactions that are likely to be involved in a deadlock,
+ thus detecting it more quickly. It can also be used to reduce
+ the chances of a session being chosen for cancellation due to
+ a deadlock.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <acronym>GUC</acronym> parameter <link
+ linkend="guc-temp-file-limit"><varname>temp_file_limit</></link>
+ to constrain temporary file space usage per session (Mark Kirkwood,
+ Cédric Villemain, Tatsuo Ishii)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <filename>postgresql.conf</filename> category "Replication /
+ Sending Servers" (Fujii Masao)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow a superuser to <command>SET</command> an extension's a
+ superuser-only custom variable before loading the associated
+ extension (Tom Lane)
+ </para>
+
+ <para>
+ The system now remembers whether a <command>SET</command> was
+ performed by a superuser.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link linkend="app-postmaster">postmaster</link> <option>-C</>
+ option to query configuration parameters (Bruce Momjian)
+ </para>
+
+ <para>
+ This allows <application>pg_ctl</> to better handle
+ configuration-only directory installations.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Force the locale to be recorded more specifically, rather than
+ using the empty string to mean the default (Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect5>
+ <title><filename>postgresql.conf</filename></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow multiple errors in <filename>postgresql.conf</filename>
+ to be reported, rather than just the first one (Alexey Klyukin,
+ Andy Colson)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow a reload of <filename>postgresql.conf</filename> to be
+ processed by all backends even if there are some settings that
+ are invalid for that session (Alexey Klyukin, Andy Colson)
+ </para>
+
+ <para>
+ Previously such not-valid-for-session errors would cause all
+ setting changes to be ignored by that backend.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add an <literal>include_if_exists</> facility for configuration
+ files (Greg Smith, Euler Taveira de Oliveira)
+ </para>
+
+ <para>
+ This works the same as <literal>include</>, except that an error
+ is not thrown if the file is missing.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Check the server time zone during initdb, and set
+ <filename>postgresql.conf</filename> values timezone and <link
+ linkend="guc-log-timezone"><varname>log_timezone</></link>
+ accordingly (Tom Lane)
+ </para>
+
+ <para>
+ This avoids expensive time zone probes during server start.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow Windows to report
+ <filename>postgresql.conf</filename> line numbers in <link
+ linkend="view-pg-settings"><structname>pg_settings</></link>
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect5>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Replication and Recovery</title>
+
+ <sect4>
+ <title>Streaming Replication</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow streaming replications slaves to serve other slaves (Fujii
+ Masao, Simon Riggs)
+ </para>
+
+ <para>
+ Previously, only the master server could supply streaming
+ replication log files to standby servers. Slaves can also now
+ do continuous archiving. (?)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add new <link
+ linkend="guc-synchronous-commit"><varname>synchronous_commit</></link>
+ replication mode <literal>remote_write</> (Fujii Masao and
+ Simon Riggs)
+ </para>
+
+ <para>
+ This only writes data to the socket, but does not wait a write
+ to the remote disk.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <link
+ linkend="app-pgreceivexlog"><application>pg_receivexlog</></link>
+ tool to archive xlog file changes as they are written, rather
+ than waiting for completed xlog files (Magnus Hagander)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Send keepalive messages to standby servers (Simon Riggs)
+ </para>
+
+ <para>
+ This allows administrators to accurately calculate streaming
+ replication transfer and application latency.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect5>
+ <title><link linkend="app-pgbasebackup"><application>pg_basebackup</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow streaming of xlog files while <application>pg_basebackup</>
+ is performing a backup (Magnus Hagander)
+ </para>
+
+ <para>
+ This allows passing of xlog files to the standby before they are
+ discarded on the primary.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <application>pg_basebackup</> to pull from standby servers
+ (Jun Ishizuka, Fujii Masao)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Exclude the postmaster.opts file from <application>pg_basebackup</>
+ backups (Magnus Hagander)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect5>
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Queries</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve columns labels produced by subqueries (Marti Raudsepp,
+ Kyotaro Horiugchi)
+ </para>
+
+ <para>
+ Previously the generic label <literal>?column?</> was used.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Preserve column names in row expressions (Andrew Dunstan, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Cancel queries if clients get disconnected (Florian Pflug Greg
+ Jaskiewicz)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Silently ignore nonexistent schemas specified in <link
+ linkend="guc-search-path"><varname>search_path</></link> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Warn about casts to and from domain types (Robert Haas)
+ </para>
+
+ <para>
+ Such casts have no affect.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ When a row fails a <literal>CHECK</> or <literal>NOT NULL</>
+ constraint, show the row's contents in errdetail (Jan
+ Kundrát, Royce Ausburn, Tom Lane)
+ </para>
+
+ <para>
+ This should make it easier to identify which row is problematic
+ when an insert or update is processing many rows.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Object Manipulation</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Provide more reliable operation during concurrent
+ <acronym>DDL</acronym> (Robert Haas, Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <literal>CONCURRENTLY</> option to <link
+ linkend="SQL-DROPINDEX"><command>DROP INDEX
+ CONCURRENTLY</command></link> (Simon Riggs)
+ </para>
+
+ <para>
+ This allows index removal without blocking other sessions.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title>Constraints</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow <link linkend="ddl-constraints"><literal>CHECK</></link>
+ constraints to be declared <literal>NOT VALID</> (Álvaro
+ Herrera, Thom Brown, Dean Rasheed, Jaime Casanova)
+ </para>
+
+ <para>
+ A <literal>NOT VALID</> <literal>CHECK</> constraint can be added
+ to a table without the table's data being verified against the
+ constraint. New rows are verified.
+ </para>
+
+ <para>
+ Such constraints are ignored by the planner when considering
+ <varname>constraint_exclusion</>. <command>ALTER TABLE</command> /
+ <literal>VALIDATE</> allows <literal>NOT VALID</> <literal>CHECK</>
+ check constraints to be fully validated and considered for
+ <varname>constraint_exclusion</>, including re-planning of
+ cached plans.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <literal>CHECK</> constraints to be declared <literal>NO
+ INHERIT</> (Nikhil Sontakke, Alex Hunsaker)
+ </para>
+
+ <para>
+ This makes them enforceable only on the parent table, not on
+ child tables.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add the ability to <link linkend="SQL-ALTERTABLE">rename</link>
+ constraints (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Disallow merging of <literal>ONLY</> and non-<literal>ONLY</>
+ constraints in child tables (Nikhil Sontakke)
+ </para>
+
+ <para>
+ Such merging would cause unpredictable behavior in grandchild
+ tables.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><command>ALTER</></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Avoid table and index rebuilds when <type>NUMERIC</>,
+ <type>VARBIT</>, and temporal columns are changed in compatible
+ ways (Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce need to rebuild indexes for various <link
+ linkend="SQL-ALTERTABLE"><command>ALTER TABLE</command></link>
+ operations (Noah Misch) DUPLICATE?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid index rebuilds for no-rewrite <command>ALTER TABLE</command>
+ / <link linkend="SQL-ALTERTYPE"><literal>ALTER TYPE</></link>
+ (Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <literal>IF EXIST</> clause to <command>ALTER</command>
+ commands (Pavel Stehule)
+ </para>
+
+ <para>
+ For example, <command>ALTER FOREIGN TABLE IF EXISTS foo RENAME
+ TO bar</command>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link linkend="SQL-ALTERFOREIGNDATAWRAPPER"><command>ALTER
+ FOREIGN DATA WRAPPER</command></link> / <literal>RENAME</>
+ and <link linkend="SQL-ALTERSERVER"><command>ALTER
+ SERVER</command></link> / <literal>RENAME</> (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link linkend="SQL-ALTERDOMAIN"><command>ALTER
+ DOMAIN</command></link> / <literal>RENAME</> (Peter Eisentraut)
+ </para>
+
+ <para>
+ You could already rename domains using <command>ALTER
+ TYPE</command>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Throw an error for <command>ALTER DOMAIN</command> / <literal>DROP
+ CONSTRAINT</> on a nonexistent constraint (Peter Eisentraut)
+ </para>
+
+ <para>
+ An <literal>IF EXISTS</> option has been added to enable the
+ previous behavior.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="SQL-CREATETABLE"><command>CREATE/ALTER TABLE</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix <command>CREATE TABLE</command> ... <literal>AS EXECUTE</>
+ to handle <literal>WITH NO DATA</> and column name specification
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support <command>CREATE TABLE (LIKE ...)</command> from foreign
+ tables and views (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <command>CREATE TABLE (LIKE ...)</command> from composite
+ type (Peter Eisentraut)
+ </para>
+
+ <para>
+ This also allows a table to be created who's schema matches a view.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Tighten creation of tables in temporary schemas (Robert Haas)
+ </para>
+
+ <para>
+ Previously, it was possible to create unlogged tables in temporary
+ schemas, and temporary tables in the temporary schemas of other
+ sessions.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Object Permissions</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add a <link
+ linkend="SQL-CREATEVIEW"><literal>security_barrier</></link>
+ option for views (KaiGai Kohei, Noah Misch)
+ </para>
+
+ <para>
+ This prevents <literal>security_barrier</> views from being moved
+ into other scopes, preventing possible leakage of view-prohibited
+ data. Such views might perform more poorly.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a new <link
+ linkend="SQL-CREATEFUNCTION"><literal>LEAKPROOF</></link> function
+ specification to mark functions that can be safely pushed down
+ into <literal>security_barrier</> views (KaiGai Kohei)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for privileges on date types (Peter Eisentraut,
+ Yeb Havinga)
+ </para>
+
+ <para>
+ This adds support for the <acronym>SQL</>-conforming
+ <literal>USAGE</> privilege on types and domains. The intent is
+ to be able restrict which users can create dependencies on types,
+ which restricts the way in which owners can alter types.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Check for <command>INSERT</command> privileges in <command>SELECT
+ INTO</command> / <command>CREATE TABLE AS</command> (KaiGai Kohei,
+ Albe Laurenz)
+ </para>
+
+ <para>
+ Because the object is being created by <command>SELECT
+ INTO</command> or <command>CREATE TABLE AS</command>, it will
+ have default insert permissions, except if <literal>ALTER DEFAULT
+ PRIVILEGES</> has removed such permissions, hence the need for
+ a permission check.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Utility Operations</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow vacuum to more easily skip pages that cannot be locked
+ (Simon Riggs, Robert Haas)
+ </para>
+
+ <para>
+ This change should greatly reduce the incidence of vacuum getting
+ "stuck".
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="SQL-EXPLAIN"><command>EXPLAIN</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Make <command>EXPLAIN (BUFFERS)</command> track blocks dirtied
+ and written (Robert Haas, Fujii Masao, Greg Smith)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <command>EXPLAIN ANALYZE</command> report the number of rows
+ rejected by filter steps (Marko Tiikkaja, Marc Cousin)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <command>EXPLAIN</command> to avoid timing overhead when
+ time values are unwanted (Tomas Vondra, Eric Theise)
+ </para>
+
+ <para>
+ This is accomplished by setting <literal>TIMING</> to
+ <literal>FALSE</>.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Data Types</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add a <link linkend="datatype-json"><type>JSON</type></link>
+ data type (Robert Haas) AUTHOR?
+ </para>
+
+ <para>
+ This stores <acronym>JSON</acronym> data as text after proper
+ validation.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link
+ linkend="functions-json"><function>array_to_json()</></link>
+ and <function>row_to_json()</> (Andrew Dunstan, Abhijit Menon-Sen)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for <link linkend="rangetypes">range data types</link>
+ (Jeff Davis, Tom Lane, Alexander Korotkov)
+ </para>
+
+ <para>
+ The range data type records a lower and upper bound, and supports
+ comparisons like contains, overlaps, and intersection.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link linkend="datatype-serial"><type>SMALLSERIAL</></link>
+ data type (Mike Pultz, Brar Piening, Josh Kupershmidt)
+ </para>
+
+ <para>
+ This is like <type>SERIAL</>, except it stores the sequence in
+ a two-byte integer column (int2).
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <link linkend="SQL-CREATEDOMAIN">domains</link> to be
+ declared <literal>NOT VALID</> (Álvaro Herrera, Thom Brown,
+ Dean Rasheed, Jaime Casanova, Peter Eisentraut)
+ </para>
+
+ <para>
+ This can be set at domain creation time, or via
+ <command>ALTER DOMAIN</command> / <literal>ADD CONSTRAINT / NOT
+ VALID</>. <command>ALTER DOMAIN</command> / <literal>VALIDATE
+ CONSTRAINT</> fully validates the domain.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support more locale-specific formatting options for the <link
+ linkend="datatype-money">MONEY</link> data type (Tom Lane)
+ </para>
+
+ <para>
+ Specifically, display the plus/minus sign, currency symbol,
+ and separators in a locale-specific order. CORRECT?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add bitwise "and", "or", and "not" <link
+ linkend="macaddr-functions-table">operators</link> for the macaddr
+ data type (Brendan Jurd, Fujii Masao)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="functions-xml"><acronym>XML</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow <function>xpath()</> to return a single-element
+ <acronym>XML</acronym> array when supplied a scalar value (Florian
+ Pflug, Radoslaw Smogura)
+ </para>
+
+ <para>
+ Previously, it returned an empty array. This change will also
+ cause <function>xpath_exists()</> to return true, not false,
+ for such expressions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve <acronym>XML</acronym> error handling to be more robust
+ (Florian Pflug, Tom Lane, Noah Misch)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Functions</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow a user to cancel queries in other owned sessions using <link
+ linkend="functions-admin-signal"><function>pg_cancel_backend()</></link>
+ (Magnus Hagander)
+ </para>
+
+ <para>
+ Previously only the superuser could cancel queries.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <link
+ linkend="functions-aggregate-table"><function>string_agg()</></link>
+ to process bytea values (Pavel Stehule, Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow regular expressions to use back-references (Tom Lane)
+ </para>
+
+ <para>
+ For example, '^(\w+)( \1)+$'.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow importing and exporting of transaction snapshots (Joachim
+ Wieland, Marko Tiikkaja, Tom Lane)
+ </para>
+
+ <para>
+ Snapshots are exported via <link
+ linkend="functions-snapshot-synchronization"><function>pg_export_snapshot()</></link>,
+ and imported via <command>SET TRANSACTION SNAPSHOT</command>.
+ Only snapshots of currently-running transactions can be imported.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support <link
+ linkend="functions-info-catalog-table"><literal>COLLATION
+ FOR</></link> on expressions (Peter Eisentraut, Jaime Casanova)
+ </para>
+
+ <para>
+ This returns a string representing the collation of the expression.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <type>NUMERIC</> variant of <link
+ linkend="functions-admin-dbsize"><function>pg_size_pretty()</></link>
+ for use with <function>pg_xlog_location_diff()</> (Fujii Masao)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title>Function and Trigger Creation</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Change default names of triggers to fire action triggers before
+ check triggers (Tom Lane)
+ </para>
+
+ <para>
+ This allows default-named check triggers to check post-action rows.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <link
+ linkend="functions-info-session-table"><function>pg_trigger_depth()</></link>
+ function (Kevin Grittner)
+ </para>
+
+ <para>
+ This reports the current trigger call depth.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Object Information Functions</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Add <link
+ linkend="functions-info-schema-table"><function>pg_opfamily_is_visible()</></link>
+ (Josh Kupershmidt)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow per-column foreign data wrapper options and
+ <literal>force_not_null</> (Shigeru Hanada, KaiGai Kohei)
+ </para>
+
+ <para>
+ This allows <acronym>SQL</acronym> specification of per-column
+ information useful to foreign data sources. Includes
+ <application>psql</> option display support.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve pretty printing of view definitions (Andrew Dunstan,
+ Hitoshi Harada)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="information-schema">Information Schema</link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add <structname>information_schema</> views
+ <structname>role_udt_grants</>, <structname>udt_privileges</>,
+ and <structname>user_defined_types</> (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add composite-type attributes to the
+ <varname>information_schema</>.<varname>element_types</> view
+ (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Implement information schema <varname>interval_type</> columns
+ (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add collation columns to various information schema views (Peter
+ Eisentraut)
+ </para>
+
+ <para>
+ Specifically, provide collation columns for views referencing
+ attributes, columns, domains, and <varname>element_types</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add display of sequence <literal>USAGE</> privileges to information
+ schema (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <varname>with_hierarchy</> column to the information schema
+ privileges display (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have the information schema show default privileges (Peter
+ Eisentraut, Abhijit Menon-Sen)
+ </para>
+
+ <para>
+ Previously default permissions generated <literal>NULL</> fields.
+ (WAS IT NULL?)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Server-Side Languages</title>
+
+ <sect4>
+ <title><link linkend="plpgsql">PL/pgSQL</link> Server-Side Language</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow the PL/pgSQL <command>OPEN</> cursor command to supply
+ parameters by name (Yeb Havinga, Kevin Grittner, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <command>GET STACKED DIAGNOSTICS</command> PL/pgSQL command
+ to retrieve exception info (Pavel Stehule, Shigeru Hanada,
+ David Wheeler)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Speed up PL/pgSQL array assignment by caching type information
+ (Pavel Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve performance and memory consumption of the PL/pgSQL
+ <literal>ELSIF</> clauses (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Output the function signature, not just the name, in PL/pgSQL
+ error messages (Pavel Stehule, Abhijit Menon-Sen, Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="plperl">PL/Perl</link> Server-Side Language</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Properly handle empty arrays returned by PL/Perl functions
+ (Andrew Dunstan) DETAILS?
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="plpython">PL/Python</link> Server-Side Language</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add PL/Python <acronym>SPI</acronym> cursor support (Jan
+ Urbańnski, Steve Singer)
+ </para>
+
+ <para>
+ This allows PL/Python to read partial result sets.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add result metadata functions to PL/Python (Peter Eisentraut,
+ Abhijit Menon-Sen)
+ </para>
+
+ <para>
+ Specifically, this adds result object functions .colnames,
+ .coltypes, and .coltypmods.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="xfunc-sql">SQL</link> Server-Side Language</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Allow <acronym>SQL</acronym>-language functions to reference
+ parameters by name (Matthew Draper, Hitoshi Harada)
+ </para>
+
+ <para>
+ To use this, simply name the function arguments and reference
+ the argument names in the <acronym>SQL</acronym> function body.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Client Applications</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add <link linkend="APP-INITDB"><application>initdb</></link>
+ options <option>--auth-local</> and <option>--auth-host</>
+ (Peter Eisentraut, Pavel Stehule)
+ </para>
+
+ <para>
+ This allows individual control of <literal>local</> and
+ <literal>host</> <filename>pg_hba.conf</filename> authentication
+ settings. <option>--auth</> still controls both.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <option>--replication</>/<option>--no-replication</> flags to
+ <link linkend="APP-CREATEUSER"><application>createuser</></link>
+ to control replication permission (Fujii Masao, Cédric
+ Villemain)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add the <option>--if-exists</> option to <link
+ linkend="APP-DROPDB"><application>dropdb</></link> and <link
+ linkend="APP-DROPUSER"><application>dropuser</></link> (Josh
+ Kupershmidt)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Give command-line tools the ability to specify the name of the
+ database to connect to, and fall back to <varname>template1</>
+ if a <literal>postgres</> database connection fails (Robert Haas)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="APP-PSQL"><application>psql</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add <application>psql</> mode to auto-expand output based on the
+ display width (Peter Eisentraut, Noah Misch)
+ </para>
+
+ <para>
+ This adds the <literal>auto</> option to the <command>\x</>
+ command, which switches to the expanded mode when the normal
+ output would be wider than the screen.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow inclusion of <application>psql</> files relative to the
+ directory of the input file from which it was invoked (Gurjeet
+ Singh, Josh Kupershmidt)
+ </para>
+
+ <para>
+ The <application>psql</> command is <command>\ir</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for non-<acronym>ASCII</acronym> characters in
+ <application>psql</> variable names (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for major-version-specific <filename>.psqlrc</> files
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ We already supported minor-version-specific <filename>.psqlrc</>
+ files.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Provide environment variable overrides for <application>psql</>
+ history and startup file locations (Andrew Dunstan)
+ </para>
+
+ <para>
+ Specifically, <envar>PSQL_HISTORY</envar> and
+ <envar>PSQLRC</envar>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <application>psql</> <command>\setenv</> command to modify
+ the environment variables used by child processes (Andrew Dunstan,
+ Josh Kupershmidt)
+ </para>
+
+ <para>
+ This is useful in <filename>.psqlrc</> files.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <application>psql</> temporary editor files use a
+ <filename>.sql</> extension (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allows <application>psql</> to use zero-byte field and record
+ separators (Peter Eisentraut, Abhijit Menon-Sen)
+ </para>
+
+ <para>
+ Various shell tools use zero/null-byte separators, e.g. find.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <application>psql</> <command>\timing</> report times for
+ failed queries (Magnus Hagander)
+ </para>
+
+ <para>
+ Previously only successful query times were reported.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <application>psql</> <command>\copy</> use libpq's
+ <function>SendQuery()</> (Noah Misch)
+ </para>
+
+ <para>
+ This makes <command>\copy</> failure behavior more predictable,
+ and honors <envar>ON_ERROR_ROLLBACK</>.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title>Informational Commands</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Make <application>psql</> <command>\d</> on a sequence show the
+ table/column name owning it (Magnus Hagander)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Show statistics target for columns in <application>psql</>
+ <command>\d+</> (Magnus Hagander)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Show role password expiration dates in <application>psql</>
+ <command>\du</> (Fabrízio de Royes Mello)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+
+ <sect5>
+ <title>Comments</title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Allow <application>psql</> to display comments for languages and
+ casts (Josh Kupershmidt)
+ </para>
+
+ <para>
+ These are output via <command>\dL</> and <command>\dC</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <application>psql</> to display comments for conversions
+ and domains (Josh Kupershmidt)
+ </para>
+
+ <para>
+ This is accomplished with the addition of <literal>+</> to
+ <command>\dc</> and <command>\dD</> commands.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <application>psql</> to display the comments on
+ <acronym>SQL</acronym>/<acronym>MED</acronym> objects in verbose
+ mode (Josh Kupershmidt)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change <application>psql</>'s <command>\dd</> command to display
+ only objects without their own backslash command (Josh Kupershmidt)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect5>
+
+ </sect4>
+
+ <sect4>
+ <title>Tab Completion</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ In <application>psql</> tab completion,
+ complete <acronym>SQL</acronym> key words based on
+ <varname>COMP_KEYWORD_CASE</> setting and the perhaps case of
+ the partially-supplied word (Peter Eisentraut, Fujii Masao)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <application>psql</> tab completion support for
+ <command>EXECUTE</command> (Andreas Karlsson, Josh Kupershmidt)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow tab completion of role references in
+ <command>GRANT</command>/<command>REVOKE</command> (Peter
+ Eisentraut, Pavel Stehule)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow tab completion of file names to supply quotes, when necessary
+ (Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change <application>psql</> tab completion support for
+ <command>TABLE</command> to also display views (Magnus Hagander)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="APP-PGDUMP"><application>pg_dump</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Parallel <application>pg_dump</> (Robert Haas, Joachim Wieland)
+ DETAILS?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add an <option>--exclude-table-data</> option to
+ <application>pg_dump</> (Andrew Dunstan)
+ </para>
+
+ <para>
+ This allows dumping of a table's definition but not its data,
+ on a per-table basis.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <option>--section</> option to <application>pg_dump</>
+ and <application>pg_restore</> (Andrew Dunstan, Joachim Wieland)
+ </para>
+
+ <para>
+ Valid values are <literal>pre-data</>, <literal>data</>,
+ and <literal>post-data</>. The option can be
+ given more than once. <option>--schema-only</>
+ is equivalent to <literal>--section=pre-data
+ --section=post-data</>. <option>--data-only</> is equivalent to
+ <literal>--section=data</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <link
+ linkend="APP-PG-DUMPALL"><application>pg_dumpall</></link> dump all
+ roles first, then all configuration settings on roles (Phil Sorber)
+ </para>
+
+ <para>
+ This allows a role's configuration settings to rely on other
+ roles without generating an error.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <application>pg_dumpall</> to avoid errors if the
+ <literal>postgres</> database is missing in the new cluster
+ (Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Dump foreign server user mappings in user name order (Peter
+ Eisentraut)
+ </para>
+
+ <para>
+ This helps produce deterministic dump files.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Dump operators in a predictable order (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Tighten rules for when extension configuration tables are dumped
+ by <application>pg_dump</> (Tom Lane)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title><link linkend="libpq"><application>libpq</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add <acronym>URI</acronym>s support to libpq connection functions
+ (Alexander Shulgin)
+ </para>
+
+ <para>
+ The syntax begins with <literal>postgres://</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a libpq connection option to disable <acronym>SSL</acronym>
+ compression (Laurenz Albe)
+ </para>
+
+ <para>
+ This can be used to remove the overhead of <acronym>SSL</acronym>
+ compression on fast networks.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a row processor <acronym>API</acronym> to libpq for better
+ handling of large result sets (Kyotaro Horiguchi, Marko Kreen)
+ </para>
+
+ <para>
+ Previously libpq collected the entire query result into memory
+ before passing it back to the application.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Enhance <literal>const</> qualifiers in the libpq functions
+ PQconnectdbParams, PQconnectStartParams, and PQpingParams (Lionel
+ Elie Mamane, Craig Ringer)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow libpq's .pgpass file to process escaped characters in the
+ password field (Robert Haas, Ross Reedstrom)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have library functions use <function>abort()</> instead of
+ <function>exit()</> to terminate the executable (Peter Eisentraut)
+ </para>
+
+ <para>
+ This does not interfere with the normal exit codes used by the
+ program, and generates a signal that can be caught by the caller.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix a libpq memory leak by freeing client encoding connection
+ parameters (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Source Code</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add support for building with <link linkend="install-windows">MS
+ Visual Studio 2010</link> (Brar Piening, Craig Ringer)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Enable compiling with the MinGW-w64 32-bit compiler (Lars Kanis,
+ Nishiyama Tomoaki)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Install plpgsql.h into include/server during installation
+ (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use C flexible array members, where supported (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve the concurrent transaction regression tests
+ (isolationtester) (Noah Misch, Alexander Shulgin)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Modify <application>thread_test</> to create its test files in
+ the current directory, rather than /tmp (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve flex and bison warning and error reporting (Tom Lane,
+ Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add memory barrier support (Robert Haas)
+ </para>
+
+ <para>
+ This is currently unused. STILL TRUE?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Modify pgindent to use a typedef file (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a hook for processing messages due to be sent to the server
+ log (Martin Pihlak, Marti Raudsepp)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add object access hooks for <command>DROP</command> commands
+ (KaiGai Kohei)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Centralize <command>DROP</command> handling for some object types
+ (KaiGai Kohei)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <application>pg_upgrade</> test suite (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Sync regular expression code with <acronym>TCL</acronym> 8.5.11
+ and improve internal processing (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Move <acronym>CRC</acronym> tables to libpgport, and provide them
+ in a separate include file (Daniel Farina, Abhijit Menon-Sen)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add options to <application>git_changelog</> for use in major
+ release note creation (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Remove dead ports (Peter Eisentraut)
+ </para>
+
+ <para>
+ The removed ports are: dgux, nextstep, sunos4, svr4, ultrix4,
+ univel, bsdi.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ <sect3>
+ <title>Modules</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve efficiency of <link linkend="dblink">dblink</link> by
+ using libpq's new row processor <acronym>API</acronym> (Kyotaro
+ Horiguchi, Marko Kreen)
+ </para>
+
+ <para>
+ This cannot be used by
+ <function>dblink_send_query()</>/<function>dblink_get_result()</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <link linkend="tcn">tcn</link> (triggered change notification)
+ to generate <command>NOTIFY</command> events on table changes
+ (Kevin Grittner)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Implement dry-run mode for <link
+ linkend="pgarchivecleanup"><application>pg_archivecleanup</></link>
+ (Gabriele Bartolini, Josh Kupershmidt)
+ </para>
+
+ <para>
+ This only outputs the names of files to be deleted.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add new <link linkend="pgbench">pgbench</link> switchs
+ <option>--unlogged-tables</>, <option>--tablespace</>, and
+ <option>--index-tablespace</> (Robert Haas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <link linkend="vacuumlo">vacuumlo</link> remove large objects
+ in batches, to reduce locking (Tim Lewis, Josh Kupershmidt,
+ Tom Lane)
+ </para>
+
+ <para>
+ The new <option>-l</> option allows changing the number of large
+ objects removed per transaction.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change <link
+ linkend="pgtestfsync"><application>pg_test_fsync</></link> to test
+ for a fixed amount of time, rather than a fixed number of cycles
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ The <option>-o</>/cycles option was removed, and
+ <option>-s</>/seconds added.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a <link
+ linkend="pgtesttiming"><application>pg_test_timing</></link>
+ utility to measure clock monotonicity and timing overhead (Ants
+ Aasma, Greg Smith)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ <sect4>
+ <title><link linkend="pgupgrade"><application>pg_upgrade</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Allow <application>pg_upgrade</> to upgrade an old cluster that
+ does not have a <literal>postgres</> database (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <application>pg_upgrade</> to handle cases where some
+ old or new databases are missing, as long as they are empty
+ (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow <application>pg_upgrade</> to handle configuration-only
+ directory installations (Bruce Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <application>pg_upgrade</>, add <option>-o</>/<option>-O</>
+ options to pass parameters to the servers (Bruce Momjian)
+ </para>
+
+ <para>
+ This is useful for configuration-only directory installs.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Change <application>pg_upgrade</> to use port 50432 by default
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ This helps avoid unintended client connections during the upgrade.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Overhaul <application>pg_upgrade</> logging and failure reporting
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ Create four append-only log files, and delete them on success.
+ Add <option>-r</>/<option>--retain</> option to unconditionally
+ retain these files. Also remove <application>pg_upgrade</> options
+ <option>-g</>/<option>-G</>/<option>-l</> options as unnecessary,
+ and tighten log file permissions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Adjust <application>pg_upgrade</> environment variables (Bruce
+ Momjian)
+ </para>
+
+ <para>
+ Rename data, bin, and port environment
+ variables to begin with <literal>PG</>, and support
+ <envar>PGPORTOLD</envar>/<envar>PGPORTNEW</envar>, to replace
+ <envar>PGPORT</envar>. INCOMPATIBILITY?
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Have <application>pg_upgrade</> create a script to incrementally
+ generate more accurate optimizer statistics (Bruce Momjian)
+ </para>
+
+ <para>
+ This reduces the time needed to generate minimal cluster statistics
+ after an upgrade.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce cluster locking in <application>pg_upgrade</> (Bruce
+ Momjian)
+ </para>
+
+ <para>
+ Specifically, only lock the old cluster if link mode is used,
+ and do it right after we restore the schema.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="pgstatstatements"><application>pg_stat_statements</></link></title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Improve <application>pg_stat_statements</> to aggregate similar
+ queries (Peter Geoghegan, Daniel Farina, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve <application>pg_stat_statements</>' handling of
+ <command>PREPARE</command>/<command>EXECUTE</command> statements
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add dirtied and written block counts to
+ <application>pg_stat_statements</> (Robert Haas, Fujii Masao,
+ Greg Smith)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect4>
+
+ <sect4>
+ <title><link linkend="sepgsql">sepgsql</link></title>
+
+ <itemizedlist>
+ <listitem>
+ <para>
+ Support <literal>SECURITY LABEL</> on global objects (KaiGai Kohei,
+ Robert Haas)
+ </para>
+
+ <para>
+ Specifically, add <literal>SECURITY LABEL</>s to databases,
+ tablespaces, and roles.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow sepgsql to honor database labels (KaiGai Kohei)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Perform sepgsql permission checks during the creation of various
+ objects (KaiGai Kohei, Dimitri Fontaine)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add <function>sepgsql_setcon()</> and related functions to control
+ the sepgsql security domain (KaiGai Kohei, Yeb Havinga)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a userspace access cache to sepgsql to improve performance
+ (KaiGai Kohei)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+ </sect4>
+
+ </sect3>
+
+ <sect3>
+ <title>Documentation</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Add a rule to optionally build docs with the stylesheet from the
+ website (Magnus Hagander)
+ </para>
+
+ <para>
+ Use <command>make STYLE=website draft</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve <command>EXPLAIN</command> documentation (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Document that user/database names are preserved with double-quoting
+ by command-line tools like <application>vacuumdb</> (Bruce
+ Momjian)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve the foreign data wrapper <acronym>API</acronym> and
+ documentation (Hanada Shigeru, KaiGai Kohei)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Document the actual string returned by the client for MD5
+ authentication (Cyan Ogilvie)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect3>
+
+ </sect2>
+ </sect1>
projects / postgresql / commitdiff