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<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_rule.sgml,v 1.11 2001/12/08 03:24:36 thomas Exp $
PostgreSQL documentation
-->
<refentry id="SQL-DROPRULE">
<refmeta>
<refentrytitle id="SQL-DROPRULE-TITLE">
DROP RULE
</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>
DROP RULE
</refname>
<refpurpose>
remove a rewrite rule
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refsynopsisdivinfo>
<date>1998-09-22</date>
</refsynopsisdivinfo>
<synopsis>
DROP RULE <replaceable class="PARAMETER">name</replaceable> [, ...]
</synopsis>
<refsect2 id="R2-SQL-DROPRULE-1">
<refsect2info>
<date>1998-09-22</date>
</refsect2info>
<title>
Inputs
</title>
<para>
<variablelist>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name of an existing rule to drop.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
<refsect2 id="R2-SQL-DROPRULE-2">
<refsect2info>
<date>1998-09-22</date>
</refsect2info>
<title>
Outputs
</title>
<para>
<variablelist>
<varlistentry>
<term><computeroutput>
DROP
</computeroutput></term>
<listitem>
<para>
Message returned if successful.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>
ERROR: Rule or view "<replaceable class="parameter">name</replaceable>" not found
</computeroutput></term>
<listitem>
<para>
This message occurs if the specified rule does not exist.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
</refsynopsisdiv>
<refsect1 id="R1-SQL-DROPRULE-1">
<refsect1info>
<date>1998-09-22</date>
</refsect1info>
<title>
Description
</title>
<para>
<command>DROP RULE</command> drops a rule from the specified
<productname>PostgreSQL</productname> rule
system. <productname>PostgreSQL</productname>
will immediately cease enforcing it and
will purge its definition from the system catalogs.
</para>
<refsect2 id="R2-SQL-DROPRULE-3">
<refsect2info>
<date>1998-09-22</date>
</refsect2info>
<title>
Notes
</title>
<para>
The <command>DROP RULE</command> statement is a
<productname>PostgreSQL</productname>
language extension.
</para>
<para>
Refer to <command>CREATE RULE</command> for
information on how to create rules.
</para>
<para>
Once a rule is dropped, access to historical information
the rule has written may disappear.
</para>
</refsect2>
</refsect1>
<refsect1 id="R1-SQL-DROPRULE-2">
<title>
Usage
</title>
<para>
To drop the rewrite rule <literal>newrule</literal>:
<programlisting>
DROP RULE newrule;
</programlisting>
</para>
</refsect1>
<refsect1 id="R1-SQL-DROPRULE-3">
<title>
Compatibility
</title>
<refsect2 id="R2-SQL-DROPRULE-5">
<refsect2info>
<date>1998-09-22</date>
</refsect2info>
<title>
SQL92
</title>
<para>
There is no <command>DROP RULE</command> in SQL92.
</para>
</refsect2>
</refsect1>
</refentry>
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