3rd October 2019: PostgreSQL 12 Released!
Unsupported versions: 9.0 / 8.4 / 8.3 / 8.2 / 8.1 / 8.0 / 7.4 / 7.3 / 7.2 / 7.1
This documentation is for an unsupported version of PostgreSQL.
You may want to view the same page for the current version, or one of the supported versions listed above instead.

CREATE CONSTRAINT TRIGGER

Name

CREATE CONSTRAINT TRIGGER -- define a new constraint trigger

Synopsis

CREATE CONSTRAINT TRIGGER name
    AFTER events ON
    tablename constraint attributes
    FOR EACH ROW EXECUTE PROCEDURE funcname ( args )

Description

CREATE CONSTRAINT TRIGGER is used within CREATE TABLE/ALTER TABLE and by pg_dump to create the special triggers for referential integrity. It is not intended for general use.

Parameters

name

The name of the constraint trigger.

events

The event categories for which this trigger should be fired.

tablename

The name (possibly schema-qualified) of the table in which the triggering events occur.

constraint

Actual constraint specification.

attributes

The constraint attributes.

funcname(args)

The function to call as part of the trigger processing.