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Update back-branch release notes.
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Tom Lane
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<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.321.4.45 2008/06/07 22:11:25 tgl Exp $ -->
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<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.321.4.46 2008/09/19 02:45:56 tgl Exp $ -->
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@ -63,6 +63,140 @@ do it for earlier branch release files.
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review, so each item is truly a community effort.
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review, so each item is truly a community effort.
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</para>
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</para>
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<sect1 id="release-8-0-18">
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<title>Release 8.0.18</title>
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<note>
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<title>Release date</title>
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<simpara>2008-09-22</simpara>
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</note>
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<para>
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This release contains a variety of fixes from 8.0.17.
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For information about new features in the 8.0 major release, see
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<xref linkend="release-8-0">.
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</para>
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<sect2>
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<title>Migration to Version 8.0.18</title>
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<para>
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A dump/restore is not required for those running 8.0.X.
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However, if you are upgrading from a version earlier than 8.0.6,
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see the release notes for 8.0.6.
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</para>
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</sect2>
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<sect2>
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<title>Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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Widen local lock counters from 32 to 64 bits (Tom)
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</para>
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<para>
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This responds to reports that the counters could overflow in
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sufficiently long transactions, leading to unexpected <quote>lock is
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already held</> errors.
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</para>
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</listitem>
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<listitem>
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<para>
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Add checks in executor startup to ensure that the tuples produced by an
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<command>INSERT</> or <command>UPDATE</> will match the target table's
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current rowtype (Tom)
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</para>
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<para>
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<command>ALTER COLUMN TYPE</>, followed by re-use of a previously
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cached plan, could produce this type of situation. The check protects
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against data corruption and/or crashes that could ensue.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix datetime input functions to correctly detect integer overflow when
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running on a 64-bit platform (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Improve performance of writing very long log messages to syslog (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
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ON</> query (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix planner to estimate that <literal>GROUP BY</> expressions yielding
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boolean results always result in two groups, regardless of the
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expressions' contents (Tom)
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</para>
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<para>
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This is very substantially more accurate than the regular <literal>GROUP
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BY</> estimate for certain boolean tests like <replaceable>col</>
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<literal>IS NULL</>.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix PL/Tcl to behave correctly with Tcl 8.5, and to be more careful
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about the encoding of data sent to or from Tcl (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix PL/Python to work with Python 2.5
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</para>
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<para>
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This is a back-port of fixes made during the 8.2 development cycle.
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</para>
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</listitem>
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<listitem>
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<para>
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Improve <application>pg_dump</> and <application>pg_restore</>'s
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error reporting after failure to send a SQL command (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix <application>pg_ctl</> to properly preserve postmaster
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command-line arguments across a <literal>restart</> (Bruce)
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</para>
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</listitem>
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<listitem>
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<para>
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Update time zone data files to <application>tzdata</> release 2008f (for
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DST law changes in Argentina, Bahamas, Brazil, Mauritius, Morocco,
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Pakistan, Palestine, and Paraguay)
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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</sect1>
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<sect1 id="release-8-0-17">
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<sect1 id="release-8-0-17">
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<title>Release 8.0.17</title>
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<title>Release 8.0.17</title>
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@ -4211,6 +4345,82 @@ typedefs (Michael)</para></listitem>
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</sect2>
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</sect2>
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</sect1>
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</sect1>
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<sect1 id="release-7-4-22">
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<title>Release 7.4.22</title>
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<note>
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<title>Release date</title>
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<simpara>2008-09-22</simpara>
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</note>
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<para>
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This release contains a variety of fixes from 7.4.21.
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For information about new features in the 7.4 major release, see
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<xref linkend="release-7-4">.
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</para>
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<sect2>
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<title>Migration to Version 7.4.22</title>
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<para>
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A dump/restore is not required for those running 7.4.X.
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However, if you are upgrading from a version earlier than 7.4.11,
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see the release notes for 7.4.11.
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</para>
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</sect2>
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<sect2>
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<title>Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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Fix datetime input functions to correctly detect integer overflow when
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running on a 64-bit platform (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Improve performance of writing very long log messages to syslog (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix bug in backwards scanning of a cursor on a <literal>SELECT DISTINCT
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ON</> query (Tom)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix planner to estimate that <literal>GROUP BY</> expressions yielding
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boolean results always result in two groups, regardless of the
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expressions' contents (Tom)
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</para>
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<para>
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This is very substantially more accurate than the regular <literal>GROUP
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BY</> estimate for certain boolean tests like <replaceable>col</>
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<literal>IS NULL</>.
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</para>
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</listitem>
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<listitem>
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<para>
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Improve <application>pg_dump</> and <application>pg_restore</>'s
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error reporting after failure to send a SQL command (Tom)
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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</sect1>
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<sect1 id="release-7-4-21">
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<sect1 id="release-7-4-21">
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<title>Release 7.4.21</title>
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<title>Release 7.4.21</title>
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