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Release notes for 17.4, 16.8, 15.12, 14.17, 13.20.
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Tom Lane
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<!-- doc/src/sgml/release-13.sgml -->
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<!-- doc/src/sgml/release-13.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-13-20">
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<title>Release 13.20</title>
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<formalpara>
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<title>Release date:</title>
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<para>2025-02-20</para>
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</formalpara>
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<para>
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This release contains a few fixes from 13.19.
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For information about new features in major release 13, see
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<xref linkend="release-13"/>.
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</para>
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<para>
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The <productname>PostgreSQL</productname> community will stop
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releasing updates for the 13.X release series in November 2025.
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Users are encouraged to update to a newer release branch soon.
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</para>
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<sect2>
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<title>Migration to Version 13.20</title>
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<para>
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A dump/restore is not required for those running 13.X.
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</para>
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<para>
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However, if you are upgrading from a version earlier than 13.17,
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see <xref linkend="release-13-17"/>.
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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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<!--
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Author: Andres Freund <andres@anarazel.de>
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Branch: master [efdadeb22] 2025-02-14 18:09:19 -0500
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Branch: REL_17_STABLE [a92db3d02] 2025-02-14 18:09:21 -0500
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Branch: REL_16_STABLE [111f4dd27] 2025-02-14 18:09:23 -0500
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Branch: REL_15_STABLE [22ffbbf24] 2025-02-14 18:09:24 -0500
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Branch: REL_14_STABLE [985908df1] 2025-02-14 18:09:25 -0500
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Branch: REL_13_STABLE [1f7a05324] 2025-02-14 18:09:27 -0500
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Author: Tom Lane <tgl@sss.pgh.pa.us>
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Branch: master [9f45e6a91] 2025-02-15 16:20:21 -0500
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Branch: REL_17_STABLE [3abe6e04c] 2025-02-15 16:20:21 -0500
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Branch: REL_16_STABLE [991a60a9f] 2025-02-15 16:20:21 -0500
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Branch: REL_15_STABLE [e782a63cc] 2025-02-15 16:20:21 -0500
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Branch: REL_14_STABLE [c08309584] 2025-02-15 16:20:21 -0500
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Branch: REL_13_STABLE [d6d29b213] 2025-02-15 16:20:21 -0500
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Author: Tom Lane <tgl@sss.pgh.pa.us>
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Branch: master [a7f95859e] 2025-02-16 12:46:35 -0500
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Branch: REL_17_STABLE [3977bd298] 2025-02-16 12:46:35 -0500
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Branch: REL_16_STABLE [644b7d686] 2025-02-16 12:46:35 -0500
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Branch: REL_15_STABLE [2226a2e26] 2025-02-16 12:46:35 -0500
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Branch: REL_14_STABLE [f864a4cdf] 2025-02-16 12:46:35 -0500
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Branch: REL_13_STABLE [9f052613e] 2025-02-16 12:46:35 -0500
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-->
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<para>
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Improve behavior of <application>libpq</application>'s quoting
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functions (Andres Freund, Tom Lane)
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<ulink url="&commit_baseurl;1f7a05324">§</ulink>
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<ulink url="&commit_baseurl;d6d29b213">§</ulink>
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<ulink url="&commit_baseurl;9f052613e">§</ulink>
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</para>
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<para>
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The changes made for CVE-2025-1094 had one serious oversight:
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<function>PQescapeLiteral()</function>
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and <function>PQescapeIdentifier()</function> failed to honor their
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string length parameter, instead always reading to the input
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string's trailing null. This resulted in including unwanted text in
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the output, if the caller intended to truncate the string via the
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length parameter. With very bad luck it could cause a crash due to
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reading off the end of memory.
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</para>
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<para>
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In addition, modify all these quoting functions so that when invalid
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encoding is detected, an invalid sequence is substituted for just
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the first byte of the presumed character, not all of it. This
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reduces the risk of problems if a calling application performs
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additional processing on the quoted string.
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</para>
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</listitem>
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<listitem>
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<!--
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note: no actual bug in v15 and later
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Author: Michael Paquier <michael@paquier.xyz>
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Branch: master [773c51dd3] 2025-02-13 16:30:58 +0900
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Branch: REL_17_STABLE [6342d49d8] 2025-02-13 16:31:05 +0900
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Branch: REL_16_STABLE [139beb035] 2025-02-13 16:31:08 +0900
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Branch: REL_15_STABLE [a37c83d1e] 2025-02-13 16:31:10 +0900
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Branch: REL_14_STABLE [8e58f8024] 2025-02-13 16:31:11 +0900
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Branch: REL_13_STABLE [520905824] 2025-02-13 16:31:12 +0900
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-->
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<para>
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Fix crash involving triggers on partitioned tables that make use of
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transition tables (Kyotaro Horiguchi)
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<ulink url="&commit_baseurl;520905824">§</ulink>
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</para>
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<para>
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If there are both <literal>AFTER UPDATE</literal>
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and <literal>AFTER DELETE</literal> triggers, the need for
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transition tables was determined incorrectly, leading to a crash
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during cross-partition updates.
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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-13-19">
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<sect1 id="release-13-19">
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<title>Release 13.19</title>
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<title>Release 13.19</title>
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