让我们首先创建一个存储过程-mysql> DELIMITER //

mysql> CREATE PROCEDURE ExtenddatesWithMonthdemo(IN date1 datetime, IN NumberOfMonth int )

-> BEGIN

-> SELECT DATE_ADD(date1,INTERVAL NumberOfMonth MONTH) AS ExtendDate;

-> END;

-> //

mysql> DELIMITER ;

现在，使用help SHOW CREATE命令检查存储过程是否存在。

查询如下-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)

借助CALL命令调用存储过程。查询如下-mysql> call ExtenddatesWithMonthdemo('2019-02-13',6);

输出结果+---------------------+

| ExtendDate          |

+---------------------+

| 2019-08-13 00:00:00 |

+---------------------+

1 row in set (0.10 sec)