8000 Update release notes for releases 9.0.3, 8.4.7, 8.3.14, and 8.2.20. · machack666/postgres@85dfc48 · GitHub
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Update release notes for releases 9.0.3, 8.4.7, 8.3.14, and 8.2.20.
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‎doc/src/sgml/release-8.2.sgml

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<!-- doc/src/sgml/release-8.2.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-8-2-20">
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<title>Release 8.2.20</title>
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<note>
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<title>Release date</title>
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<simpara>2011-01-31</simpara>
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</note>
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<para>
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This release contains a variety of fixes from 8.2.19.
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For information about new features in the 8.2 major release, see
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<xref linkend="release-8-2">.
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</para>
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<sect2>
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<title>Migration to Version 8.2.20</title>
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<para>
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A dump/restore is not required for those running 8.2.X.
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However, if you are upgrading from a version earlier than 8.2.14,
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see the release notes for 8.2.14.
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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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Avoid failures when <command>EXPLAIN</> tries to display a simple-form
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<literal>CASE</> expression (Tom Lane)
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</para>
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<para>
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If the <literal>CASE</>'s test expression was a constant, the planner
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could simplify the <literal>CASE</> into a form that confused the
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expression-display code, resulting in <quote>unexpected CASE WHEN
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clause</> 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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Fix assignment to an array slice that is before the existing range
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of subscripts (Tom Lane)
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</para>
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<para>
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If there was a gap between the newly added subscripts and the first
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pre-existing subscript, the code miscalculated how many entries needed
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to be copied from the old array's null bitmap, potentially leading to
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data corruption or crash.
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</para>
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</listitem>
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<listitem>
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<para>
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Avoid unexpected conversion overflow in planner for very distant date
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values (Tom Lane)
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</para>
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<para>
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The <type>date</> type supports a wider range of dates than can be
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represented by the <type>timestamp</> types, but the planner assumed it
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could always convert a date to timestamp with impunity.
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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_restore</>'s text output for large objects (BLOBs)
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when <varname>standard_conforming_strings</> is on (Tom Lane)
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</para>
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<para>
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Although restoring directly to a database worked correctly, string
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escaping was incorrect if <application>pg_restore</> was asked for
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SQL text output and <varname>standard_conforming_strings</> had been
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enabled in the source database.
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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 erroneous parsing of <type>tsquery</> values containing
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<literal>... &amp; !(subexpression) | ...</literal> (Tom Lane)
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</para>
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<para>
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Queries containing this combination of operators were not executed
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correctly. The same error existed in <filename>contrib/intarray</>'s
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<type>query_int</> type and <filename>contrib/ltree</>'s
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<type>ltxtquery</> type.
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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 <filename>contrib/seg</>'s GiST picksplit algorithm
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(Alexander Korotkov)
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</para>
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<para>
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This could result in considerable inefficiency, though not actually
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incorrect answers, in a GiST index on a <type>seg</> column.
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If you have such an index, consider <command>REINDEX</>ing it after
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installing this update. (This is identical to the bug that was fixed in
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<filename>contrib/cube</> in the previous update.)
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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-8-2-19">
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<title>Release 8.2.19</title>
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