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DROP_TRIGGER.7
'\" t .\" Title: DROP TRIGGER .\" Author: The PostgreSQL Global Development Group .\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/> .\" Date: 2023 .\" Manual: PostgreSQL 13.13 Documentation .\" Source: PostgreSQL 13.13 .\" Language: English .\" .TH "DROP TRIGGER" "7" "2023" "PostgreSQL 13.13" "PostgreSQL 13.13 Documentation" .\" ----------------------------------------------------------------- .\" * Define some portability stuff .\" ----------------------------------------------------------------- .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .\" http://bugs.debian.org/507673 .\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html .\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" ----------------------------------------------------------------- .\" * set default formatting .\" ----------------------------------------------------------------- .\" disable hyphenation .nh .\" disable justification (adjust text to left margin only) .ad l .\" ----------------------------------------------------------------- .\" * MAIN CONTENT STARTS HERE * .\" ----------------------------------------------------------------- .SH "NAME" DROP_TRIGGER \- remove a trigger .SH "SYNOPSIS" .sp .nf DROP TRIGGER [ IF EXISTS ] \fIname\fR ON \fItable_name\fR [ CASCADE | RESTRICT ] .fi .SH "DESCRIPTION" .PP \fBDROP TRIGGER\fR removes an existing trigger definition\&. To execute this command, the current user must be the owner of the table for which the trigger is defined\&. .SH "PARAMETERS" .PP IF EXISTS .RS 4 Do not throw an error if the trigger does not exist\&. A notice is issued in this case\&. .RE .PP \fIname\fR .RS 4 The name of the trigger to remove\&. .RE .PP \fItable_name\fR .RS 4 The name (optionally schema\-qualified) of the table for which the trigger is defined\&. .RE .PP CASCADE .RS 4 Automatically drop objects that depend on the trigger, and in turn all objects that depend on those objects (see Section\ \&5.14)\&. .RE .PP RESTRICT .RS 4 Refuse to drop the trigger if any objects depend on it\&. This is the default\&. .RE .SH "EXAMPLES" .PP Destroy the trigger if_dist_exists on the table films: .sp .if n \{\ .RS 4 .\} .nf DROP TRIGGER if_dist_exists ON films; .fi .if n \{\ .RE .\} .SH "COMPATIBILITY" .PP The \fBDROP TRIGGER\fR statement in PostgreSQL is incompatible with the SQL standard\&. In the SQL standard, trigger names are not local to tables, so the command is simply DROP TRIGGER \fIname\fR\&. .SH "SEE ALSO" CREATE TRIGGER (\fBCREATE_TRIGGER\fR(7))