Updated on 2025-07-22 GMT+08:00

DROP TRIGGER

Function

DROP TRIGGER deletes a trigger.

Precautions

Only the owner of a trigger and system administrators can run the DROP TRIGGER statement.

Syntax

1
DROP TRIGGER [ IF EXISTS ] trigger_name ON table_name [ CASCADE | RESTRICT ];

Parameter Description

Table 1 DROP TRIGGER parameters

Parameter

Description

Value Range

IF EXISTS

Sends a notice instead of an error if the specified trigger does not exist.

-

trigger_name

Specifies the name of the trigger to be deleted.

An existing trigger.

table_name

Specifies the name of the table where the trigger to be deleted is located.

An existing table having a trigger

CASCADE | RESTRICT

Specifies how to process related data in the dependent object when a delete operation is performed.

  • CASCADE: Deletes objects that depend on the trigger.
  • RESTRICT: Refuses to delete the trigger if any objects depend on it. This is the default.

Examples

Delete the trigger insert_trigger:

1
DROP TRIGGER insert_trigger ON test_trigger_src_tbl;