August 3, 2023
Summary: in this tutorial, you will learn how to disable triggers by using the ALTER TABLE DISABLE TRIGGER
statement.
Introduction to ALTER TABLE DISABLE TRIGGER statement
To disable a trigger, you use the ALTER TABLE DISABLE TRIGGER
statement:
ALTER TABLE table_name
DISABLE TRIGGER trigger_name | ALL
In this syntax,
- First, specify the name of the table, which the trigger is associated with, after the
ALTER TABLE
keywords. - Second, specify the name of the trigger that you want to disable after the
DISABLE TRIGGER
keywords or use theALL
keyword to disable all triggers associated with the table.
When you disable a trigger, the trigger still exists in the database. However, the disabled trigger will not fire when an event associated with the trigger occurs.
Suppose you want to disable the trigger associated with the employees
table, you can use the following statement:
ALTER TABLE employees
DISABLE TRIGGER log_last_name_changes;
To disable all triggers associated with the employees
table, you use the following statement:
ALTER TABLE employees
DISABLE TRIGGER ALL;
Summary
- Use
ALTER TABLE DISABLE TRIGGER
statement to disable a trigger or all all triggers associated with a table.