175 lines
3.8 KiB
Plaintext
175 lines
3.8 KiB
Plaintext
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$Header: /cvsroot/pgsql/doc/src/sgml/ref/drop_trigger.sgml,v 1.7 2001/09/03 12:57:50 petere Exp $
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Postgres documentation
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-->
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<refentry id="SQL-DROPTRIGGER">
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<refmeta>
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<refentrytitle id="SQL-DROPTRIGGER-TITLE">
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DROP TRIGGER
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</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>
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DROP TRIGGER
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</refname>
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<refpurpose>
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remove a trigger
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</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<refsynopsisdivinfo>
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<date>1998-09-22</date>
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</refsynopsisdivinfo>
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<synopsis>
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DROP TRIGGER <replaceable class="PARAMETER">name</replaceable> ON <replaceable class="PARAMETER">table</replaceable>
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</synopsis>
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<refsect2 id="R2-SQL-DROPTRIGGER-1">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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Inputs
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</title>
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<para>
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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.
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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 a table.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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<refsect2 id="R2-SQL-DROPTRIGGER-2">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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Outputs
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</title>
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<para>
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<variablelist>
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<varlistentry>
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<term><computeroutput>
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DROP
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</computeroutput></term>
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<listitem>
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<para>
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The message returned if the trigger is successfully dropped.
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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><computeroutput>
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ERROR: DropTrigger: there is no trigger <replaceable class="PARAMETER">name</replaceable> on relation "<replaceable class="parameter">table</replaceable>"
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</computeroutput></term>
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<listitem>
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<para>
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This message occurs if the trigger specified does not exist.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</para>
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</refsect2>
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</refsynopsisdiv>
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<refsect1 id="R1-SQL-DROPTRIGGER-1">
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<refsect1info>
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<date>1998-09-22</date>
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</refsect1info>
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<title>
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Description
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</title>
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<para>
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<command>DROP TRIGGER</command> will remove all references to an existing
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trigger definition. To execute this command the current
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user must be the owner of the trigger.
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</para>
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<refsect2 id="R2-SQL-DROPTRIGGER-3">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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Notes
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</title>
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<para>
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<command>DROP TRIGGER</command> is a <productname>Postgres</productname>
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language extension.
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</para>
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<para>
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Refer to <command>CREATE TRIGGER</command> for
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information on how to create triggers.
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</para>
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</refsect2>
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</refsect1>
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<refsect1 id="R1-SQL-DROPTRIGGER-2">
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<title>
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Usage
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</title>
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<para>
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Destroy the <literal>if_dist_exists</literal> trigger
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on table <literal>films</literal>:
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<programlisting>
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DROP TRIGGER if_dist_exists ON films;
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</programlisting>
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</para>
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</refsect1>
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<refsect1 id="R1-SQL-DROPTRIGGER-3">
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<title>
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Compatibility
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</title>
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<refsect2 id="R2-SQL-DROPTRIGGER-4">
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<refsect2info>
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<date>1998-09-22</date>
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</refsect2info>
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<title>
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SQL92
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</title>
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<para>
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There is no <command>DROP TRIGGER</command> statement in
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<acronym>SQL92</acronym>.
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</para>
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</refsect2>
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</refsect1>
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</refentry>
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