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mirror of https://github.com/postgres/postgres.git synced 2025-07-30 11:03:19 +03:00

Add note about sort order of character datatypes being locale-dependent,

per suggestion from Nicolaus Erichsen.
This commit is contained in:
Tom Lane
2002-10-24 21:19:15 +00:00
parent 3a0fde3b51
commit 6b704bf501

View File

@ -1,5 +1,5 @@
<!-- <!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/select.sgml,v 1.62 2002/10/18 18:26:22 tgl Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/ref/select.sgml,v 1.63 2002/10/24 21:19:15 tgl Exp $
PostgreSQL documentation PostgreSQL documentation
--> -->
@ -618,7 +618,7 @@ ORDER BY <replaceable class="PARAMETER">expression</replaceable> [ ASC | DESC |
<para> <para>
The ordinal number refers to the ordinal (left-to-right) position The ordinal number refers to the ordinal (left-to-right) position
of the result column. This feature makes it possible to define an ordering of the result column. This feature makes it possible to define an ordering
on the basis of a column that does not have a proper name. on the basis of a column that does not have a unique name.
This is never absolutely necessary because it is always possible This is never absolutely necessary because it is always possible
to assign a name to a result column using the AS clause, e.g.: to assign a name to a result column using the AS clause, e.g.:
<programlisting> <programlisting>
@ -663,6 +663,12 @@ SELECT name FROM distributors ORDER BY code;
descending sort order nulls sort at the beginning. descending sort order nulls sort at the beginning.
</para> </para>
<para>
Data of character types is sorted according to the locale-specific
collation order that was established when the database cluster
was initialized.
</para>
</refsect2> </refsect2>
<refsect2 id="SQL-UNION"> <refsect2 id="SQL-UNION">