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How to check whether a stored procedure exist in MySQL?
Let us first create a stored procedure −
mysql> DELIMITER // mysql> CREATE PROCEDURE ExtenddatesWithMonthdemo(IN date1 datetime, IN NumberOfMonth int ) -> BEGIN -> SELECT DATE_ADD(date1,INTERVAL NumberOfMonth MONTH) AS ExtendDate; -> END; -> // Query OK, 0 rows affected (0.20 sec) mysql> DELIMITER ;
Now you check whether the stored procedure exists with the help SHOW CREATE command.
The query is as follows −
mysql> SHOW CREATE PROCEDURE ExtenddatesWithMonthdemo; The following is the output displaying the details of the stored procedure we created above: +--------------------------+--------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+ | Procedure | sql_mode | Create Procedure | character_set_client | collation_connection | Database Collation | +--------------------------+--------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+ | ExtenddatesWithMonthdemo | STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION | CREATE DEFINER = `root`@`%` PROCEDURE `ExtenddatesWithMonthdemo`(IN date1 datetime, IN NumberOfMonth int ) BEGIN SELECT DATE_ADD(date1,INTERVAL NumberOfMonth MONTH) AS ExtendDate; END | utf8 | utf8_general_ci | utf8_general_ci | +--------------------------+--------------------------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+----------------------+----------------------+--------------------+ 1 row in set (0.00 sec)
Call the stored procedure with the help of the CALL command. The query is as follows −
mysql> call ExtenddatesWithMonthdemo('2019-02-13',6);
Output
+---------------------+ | ExtendDate | +---------------------+ | 2019-08-13 00:00:00 | +---------------------+ 1 row in set (0.10 sec) Query OK, 0 rows affected (0.12 sec)
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