DROP TRIGGER [ IF EXISTS ] name ON table [ CASCADE | RESTRICT ]
DESCRIPTION
DROP TRIGGER
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.
PARAMETERS
IF EXISTS
Do not throw an error if the trigger does not exist. A notice is issued in this case.
name
The name of the trigger to remove.
table
The name (optionally schema-qualified) of the table for which the trigger is defined.
CASCADE
Automatically drop objects that depend on the trigger.
RESTRICT
Refuse to drop the trigger if any objects depend on it. This is the default.
EXAMPLES
Destroy the trigger
if_dist_exists
on the table
films:
DROP TRIGGER if_dist_exists ON films;
COMPATIBILITY
The
DROP TRIGGER
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 name.