Linux Certif

Toute la documentation sur la certification Linux LPI

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.