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115 lines
2.8 KiB
Plaintext
115 lines
2.8 KiB
Plaintext
<!--
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$PostgreSQL: pgsql/doc/src/sgml/ref/alter_trigger.sgml,v 1.10 2006/09/16 00:30:16 momjian Exp $
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PostgreSQL documentation
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-->
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<refentry id="SQL-ALTERTRIGGER">
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<refmeta>
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<refentrytitle id="sql-altertrigger-title">ALTER TRIGGER</refentrytitle>
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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 TRIGGER</refname>
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<refpurpose>change the definition of a trigger</refpurpose>
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</refnamediv>
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<indexterm zone="sql-altertrigger">
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<primary>ALTER TRIGGER</primary>
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</indexterm>
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<refsynopsisdiv>
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<synopsis>
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ALTER TRIGGER <replaceable class="PARAMETER">name</replaceable> ON <replaceable class="PARAMETER">table</replaceable> RENAME TO <replaceable class="PARAMETER">newname</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 TRIGGER</command> changes properties of an existing
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trigger. The <literal>RENAME</literal> clause changes the name of
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the given trigger without otherwise changing the trigger
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definition.
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</para>
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<para>
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You must own the table on which the trigger acts to be allowed to change its properties.
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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 trigger 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</replaceable></term>
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<listitem>
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<para>
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The name of the table on which this trigger acts.
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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">newname</replaceable></term>
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<listitem>
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<para>
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The new name for the trigger.
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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>Notes</title>
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<para>
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The ability to temporarily enable or disable a trigger is provided by
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<xref linkend="SQL-ALTERTABLE" endterm="SQL-ALTERTABLE-TITLE">, not by
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<command>ALTER TRIGGER</>, because <command>ALTER TRIGGER</> has no
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convenient way to express the option of enabling or disabling all of
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a table's triggers at once.
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</para>
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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 trigger:
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<programlisting>
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ALTER TRIGGER emp_stamp ON emp RENAME TO emp_track_chgs;
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</programlisting>
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</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 TRIGGER</command> is a <productname>PostgreSQL</>
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extension of the SQL standard.
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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-altertable" endterm="sql-altertable-title"></member>
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</simplelist>
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</refsect1>
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</refentry>
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