SHOW CREATE TRIGGER

You can use the SHOW CREATE TRIGGER statement to view the information about a trigger.

Syntax:

SHOW CREATE TRIGGER trigger_name;

This statement requires that the table associated with the trigger have the TRIGGER privilege.

The output of the SHOW CREATE TRIGGER statement contains the following fields:

• Trigger: the name of the trigger.

• sql_mode: the SQL mode used when the trigger is executed.

• SQL Original Statement: the CREATE TRIGGER statement that defines the trigger.

• character_set_client: the value of the character_set_client system variable in the current session when the trigger was created.

• collation_connection: the value of the collation_connection system variable when the trigger was created.

• Database Collation: the collation of the database to which the trigger is associated.

• Created: the date and time when the trigger was created. The type of the value is TIMESTAMP(2) (with the fractional part in hundredth seconds).

You can also obtain the information about a trigger from the INFORMATION_SCHEMA TRIGGERS table. For more information, see INFORMATION_SCHEMA TRIGGERS.

Example:

obclient> SHOW CREATE TRIGGER test_trg;
+--------------+----------+-----------------+-----------------------+----------------------+--------------------+
| Trigger   |   sql_mode  |  SQL Original Statement  | character_set_client  | collation_connection | Database Collation |
+--------------+----------+-----------------+-----------------------+----------------------+--------------------+
| test_trg  | STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE  |CREATE TRIGGER test_trg BEFORE UPDATE ON test FOR EACH ROW BEGIN IF NEW.user_num < 1 THENSET NEW.user_num  = 1; ELSEIF NEW.user_num > 45 THEN SET NEW.user_num= 45; END IF;END |       utf8mb4         | utf8mb4              | utf8mb4            |
+--------------+----------+-----------------+-----------------------+----------------------+--------------------+--------+
1 row in set