DROP TRIGGER
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Syntax
DROP TRIGGER [IF EXISTS] [schema_name.]trigger_name
Description
This statement drops a trigger. The schema (database) name is optional. If the
schema is omitted, the trigger is dropped from the default schema.
DROP TRIGGER
was added in MySQL 5.0.2. Its use requires the TRIGGER
privilege for the table associated with the trigger. (This statement requires
the SUPER
privilege prior to MySQL 5.1.6.)
Use IF EXISTS
to prevent an error from occurring for a
trigger that does not exist. A NOTE
is generated for a non-existent trigger
when using IF EXISTS
. See SHOW WARNINGS.
The IF EXISTS
clause was added in MySQL 5.1.14.
Note: Triggers for a table are also dropped if you drop the table.
Examples
DROP TRIGGER test.example_trigger;
Using the IF EXISTS clause:
DROP TRIGGER IF EXISTS test.example_trigger; Query OK, 0 rows affected, 1 warning (0.01 sec) SHOW WARNINGS; +-------+------+------------------------+ | Level | Code | Message | +-------+------+------------------------+ | Note | 1360 | Trigger does not exist | +-------+------+------------------------+
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