106 lines
2.4 KiB
Plaintext
106 lines
2.4 KiB
Plaintext
<!--
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doc/src/sgml/ref/alter_rule.sgml
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PostgreSQL documentation
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-->
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<refentry id="sql-alterrule">
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<indexterm zone="sql-alterrule">
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<primary>ALTER RULE</primary>
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</indexterm>
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<refmeta>
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<refentrytitle>ALTER RULE</refentrytitle>
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<manvolnum>7</manvolnum>
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<refmiscinfo>SQL - Language Statements</refmiscinfo>
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</refmeta>
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<refnamediv>
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<refname>ALTER RULE</refname>
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<refpurpose>change the definition of a rule</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<synopsis>
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ALTER RULE <replaceable class="parameter">name</replaceable> ON <replaceable class="parameter">table_name</replaceable> RENAME TO <replaceable class="parameter">new_name</replaceable>
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</synopsis>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para>
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<command>ALTER RULE</command> changes properties of an existing
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rule. Currently, the only available action is to change the rule's name.
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</para>
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<para>
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To use <command>ALTER RULE</command>, you must own the table or view that
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the rule applies to.
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</para>
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</refsect1>
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<refsect1>
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<title>Parameters</title>
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<variablelist>
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<varlistentry>
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<term><replaceable class="parameter">name</replaceable></term>
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<listitem>
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<para>
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The name of an existing rule to alter.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">table_name</replaceable></term>
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<listitem>
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<para>
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The name (optionally schema-qualified) of the table or view that the
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rule applies to.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><replaceable class="parameter">new_name</replaceable></term>
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<listitem>
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<para>
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The new name for the rule.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</refsect1>
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<refsect1>
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<title>Examples</title>
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<para>
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To rename an existing rule:
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<programlisting>
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ALTER RULE notify_all ON emp RENAME TO notify_me;
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</programlisting></para>
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</refsect1>
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<refsect1>
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<title>Compatibility</title>
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<para>
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<command>ALTER RULE</command> is a
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<productname>PostgreSQL</productname> language extension, as is the
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entire query rewrite system.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<simplelist type="inline">
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<member><xref linkend="sql-createrule"/></member>
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<member><xref linkend="sql-droprule"/></member>
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</simplelist>
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</refsect1>
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</refentry>
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