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Document new SET SEED command.

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Thomas G. Lockhart
2000-04-07 13:31:18 +00:00
parent 30e355fc80
commit 1b992b468b
1 changed files with 39 additions and 1 deletions
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doc/src/sgml/ref/set.sgml
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@ -1,5 +1,5 @@
<!-- <!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.35 2000/03/31 17:45:32 tgl Exp $ $Header: /cvsroot/pgsql/doc/src/sgml/ref/set.sgml,v 1.36 2000/04/07 13:31:18 thomas Exp $
Postgres documentation Postgres documentation
--> -->
@ -201,6 +201,44 @@ SET TRANSACTION ISOLATION LEVEL { READ COMMITTED | SERIALIZABLE }
</listitem> </listitem>
</varlistentry> </varlistentry>
<varlistentry>
<term>Seed</term>
<listitem>
<para>
Sets the internal seed for the random number generator.
<variablelist>
<varlistentry>
<term><replaceable class="parameter">value</replaceable></term>
<listitem>
<para>
The value for the seed to be used by the
<function>random</function> catalog function. Significant
values are floating point numbers between 0 and 1, which
are then multiplied by RAND_MAX. This product will
silently overflow if a number outside the range is used.
</para>
<para>
The seed can also be set by invoking the
<function>setseed</function> SQL function:
<programlisting>
SELECT setseed(<replaceable>value</replaceable>);
</programlisting>
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
<para>
This option is only available if MULTIBYTE support was enabled
during the configure step of building Postgres.
</para>
</listitem>
</varlistentry>
<varlistentry> <varlistentry>
<term>SERVER_ENCODING</term> <term>SERVER_ENCODING</term>
<listitem> <listitem>