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Add mention of performance impact on LIKE of non-C locales.

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Bruce Momjian
2005-01-04 00:05:45 +00:00
parent a2a5526ecb
commit 246be304a5
3 changed files with 34 additions and 23 deletions
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27
doc/src/sgml/ref/initdb.sgml
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@@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/initdb.sgml,v 1.32 2004/08/01 06:19:18 momjian Exp $
$PostgreSQL: pgsql/doc/src/sgml/ref/initdb.sgml,v 1.33 2005/01/04 00:05:45 momjian Exp $
PostgreSQL documentation
-->
@@ -54,21 +54,22 @@ PostgreSQL documentation
</para>
<para>
<command>initdb</command> initializes the database cluster's
default locale and character set encoding. Some locale categories
are fixed for the lifetime of the cluster, so it is important to
make the right choice when running <command>initdb</command>.
Other locale categories can be changed later when the server is
started. <command>initdb</command> will write those locale
settings into the <filename>postgresql.conf</filename>
configuration file so they are the default, but they can be changed
by editing that file. To set the locale that
<command>initdb</command> uses, see the description of the
<option>--locale</option> option. The character set encoding can
<command>initdb</command> initializes the database cluster's default
locale and character set encoding. Some locale categories are fixed
for the lifetime of the cluster. There is also a performance impact
in using locales other than <literal>C</> or <literal>POSIX</>.
Therefore it is important to make the right choice when running
<command>initdb</command>. Other locale categories can be changed
later when the server is started. <command>initdb</command> will
write those locale settings into the
<filename>postgresql.conf</filename> configuration file so they are
the default, but they can be changed by editing that file. To set the
locale that <command>initdb</command> uses, see the description of
the <option>--locale</option> option. The character set encoding can
be set separately for each database as it is created.
<command>initdb</command> determines the encoding for the
<literal>template1</literal> database, which will serve as the
default for all other databases. To alter the default encoding use
default for all other databases. To alter the default encoding use
the <option>--encoding</option> option.
</para>