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postgres/doc/src/sgml/ref/drop_rule.sgml
Peter Eisentraut 6753ced310 Make placeholders in SQL command help more consistent and precise
To avoid divergent names on related pages, avoid ambiguities, and
reduce translation work a little.
2012-06-22 01:06:14 +03:00

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<!--
doc/src/sgml/ref/drop_rule.sgml
PostgreSQL documentation
-->
<refentry id="SQL-DROPRULE">
<refmeta>
<refentrytitle>DROP RULE</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DROP RULE</refname>
<refpurpose>remove a rewrite rule</refpurpose>
</refnamediv>
<indexterm zone="sql-droprule">
<primary>DROP RULE</primary>
</indexterm>
<refsynopsisdiv>
<synopsis>
DROP RULE [ IF EXISTS ] <replaceable class="PARAMETER">name</replaceable> ON <replaceable class="PARAMETER">table_name</replaceable> [ CASCADE | RESTRICT ]
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>DROP RULE</command> drops a rewrite rule.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><literal>IF EXISTS</literal></term>
<listitem>
<para>
Do not throw an error if the rule does not exist. A notice is issued
in this case.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name of the rule to drop.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">table_name</replaceable></term>
<listitem>
<para>
The name (optionally schema-qualified) of the table or view that
the rule applies to.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>CASCADE</literal></term>
<listitem>
<para>
Automatically drop objects that depend on the rule.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>RESTRICT</literal></term>
<listitem>
<para>
Refuse to drop the rule if any objects depend on it. This is
the default.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Examples</title>
<para>
To drop the rewrite rule <literal>newrule</literal>:
<programlisting>
DROP RULE newrule ON mytable;
</programlisting></para>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
There is no <command>DROP RULE</command> statement in the SQL standard.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-createrule"></member>
</simplelist>
</refsect1>
</refentry>