create_constraint_trigger7
Define a new constraint trigger
Usage
CREATE CONSTRAINT TRIGGER name
AFTER events ON
tablename constraint attributes
FOR EACH ROW EXECUTE PROCEDURE funcname ( args )
Overview
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.