DROP TRIGGER

Purpose

Triggers are defined using PL/SQL. Refer to Oracle Database PL/SQL Language Reference for complete information on creating, altering, and dropping triggers.

Use the DROP TRIGGER statement to remove a database trigger from the database.

See Also:

CREATE TRIGGER and ALTER TRIGGER

Prerequisites

The trigger must be in your own schema or you must have the DROP ANY TRIGGER system privilege. To drop a trigger on DATABASE in another user's schema, you must also have the ADMINISTER DATABASE TRIGGER system privilege.

Syntax

drop_trigger::=

Description of the illustration drop_trigger.eps

Semantics

IF EXISTS

Specify IF EXISTS to drop an existing object.

Specifying IF NOT EXISTS with DROP results in ORA-11544: Incorrect IF EXISTS clause for ALTER/DROP statement.

schema

Specify the schema containing the trigger. If you omit schema, then Oracle Database assumes the trigger is in your own schema.

trigger

Specify the name of the trigger to be dropped. Oracle Database removes it from the database and does not fire it again.

Examples

Dropping a Trigger: Example

The following statement drops the salary_check trigger in the schema hr:

DROP TRIGGER hr.salary_check;