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

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per suggestion from Nicolaus Erichsen.
This commit is contained in:
Tom Lane 2002-10-24 21:19:15 +00:00
parent 3a0fde3b51
commit 6b704bf501
1 changed files with 8 additions and 2 deletions
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10
doc/src/sgml/ref/select.sgml
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@ -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
-->
@ -618,7 +618,7 @@ ORDER BY <replaceable class="PARAMETER">expression</replaceable> [ ASC | DESC |
<para>
The ordinal number refers to the ordinal (left-to-right) position
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
to assign a name to a result column using the AS clause, e.g.:
<programlisting>
@ -663,6 +663,12 @@ SELECT name FROM distributors ORDER BY code;
descending sort order nulls sort at the beginning.
</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 id="SQL-UNION">