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How to set delay for MySQL trigger/procedure execution?
To set delay, you can use SLEEP(). Let us implement SLEEP() in the procedure execution delay.
First, we will create a stored procedure −
mysql> DELIMITER // mysql> CREATE PROCEDURE delayInMessage() -> BEGIN -> SELECT SLEEP(20); -> SELECT "AFTER SLEEPING 20 SECONDS, BYE!!!"; -> END -> // Query OK, 0 rows affected (0.30 sec) mysql> DELIMITER ;
Now you can call the stored procedure with the help of CALL command. Following is the syntax −
CALL yourStoredProcedureName();
Following is the query to call the above-stored procedure and check the execution delay −
mysql> call delayInMessage();
This will produce the following output −
+-----------+ | SLEEP(20) | +-----------+ | 0 | +-----------+ 1 row in set (20.00 sec) +------------------------------------+ | AFTER SLEEPING 20 SECONDS, BYE!!! | +------------------------------------+ | AFTER SLEEPING 20 SECONDS, BYE!!! | +------------------------------------+ 1 row in set (20.01 sec) Query OK, 0 rows affected (20.04 sec)
Look at the above sample output, the execution delay is 20.01 sec.
Updated on: 30-Jul-2019
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