CREATE CONSTRAINT TRIGGER SQL - Language Statements CREATE CONSTRAINT TRIGGER define a new constraint trigger 2000-04-13 CREATE CONSTRAINT TRIGGER name AFTER events ON relation constraint attributes FOR EACH ROW EXECUTE PROCEDURE func '(' args ')' name The name of the constraint trigger. events The event categories for which this trigger should be fired. relation The name (possibly schema-qualified) of the relation in which the triggering events occur. constraint Actual constraint specification. attributes Constraint attributes. func(args) Function to call as part of the trigger processing. CREATE TRIGGER Message returned if successful. CREATE CONSTRAINT TRIGGER is used within CREATE/ALTER TABLE and by pg_dump to create the special triggers for referential integrity. It is not intended for general use.