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relnotes: improve collation check and ICU items

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Reported-by: Matthias van de Meent

Discussion: https://postgr.es/m/CAEze2WhrNAT2g8upDUhfqt1nWfV_JdUgXAQu7oT4rY2L68O-HQ@mail.gmail.com

Backpatch-through: 15 only
This commit is contained in:
Bruce Momjian 2022-09-02 21:47:30 -04:00
parent d0d9344900
commit 4ddcb20592
1 changed files with 8 additions and 6 deletions
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14
doc/src/sgml/release-15.sgml
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@ -578,17 +578,17 @@ Author: Peter Eisentraut <peter@eisentraut.org>
<listitem>
<para>
Record and check the collation of each <link
Record and check the collation version of each <link
linkend="sql-createdatabase">database</link> (Peter Eisentraut)
</para>
<para>
This is designed to detect collation
This is designed to detect collation version
mismatches to avoid data corruption. Function
<function>pg_database_collation_actual_version()</function>
reports the underlying operating system collation version, and
<command>ALTER DATABASE ... REFRESH</command> sets the database
to match the operating system collation version. DETAILS?
to match the operating system collation version.
</para>
</listitem>
@ -605,9 +605,11 @@ Author: Peter Eisentraut <peter@eisentraut.org>
</para>
<para>
Previously, <acronym>ICU</acronym> collations could only be
specified in <link linkend="sql-createcollation"><command>CREATE
COLLATION</command></link> and used with the
Previously, only <application>libc</application>-based
collations could be set at the cluster and database levels.
<acronym>ICU</acronym> collations were previously limited
to <link linkend="sql-createcollation"><command>CREATE
COLLATION</command></link> and referenced by the
<literal>COLLATE</literal> clause.
</para>
</listitem>