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Update statement about sorting of character-string data.

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The sort order is no longer fixed at database creation time, but can be
controlled via COLLATE.  Noted by Thomas Kellerer.
This commit is contained in:
Tom Lane 2012-01-28 20:54:56 -05:00
parent 1a096957d7
commit b3bd5a093f
1 changed files with 7 additions and 2 deletions
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9
doc/src/sgml/ref/select.sgml
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@ -1049,8 +1049,13 @@ SELECT name FROM distributors ORDER BY code;
</para>
<para>
Character-string data is sorted according to the locale-specific
collation order that was established when the database was created.
Character-string data is sorted according to the collation that applies
to the column being sorted. That can be overridden at need by including
a <literal>COLLATE</> clause in the
<replaceable class="parameter">expression</replaceable>, for example
<literal>ORDER BY mycolumn COLLATE "en_US"</>.
For more information see <xref linkend="sql-syntax-collate-exprs"> and
<xref linkend="collation">.
</para>
</refsect2>