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This paper illustrates the usage of mysql stored procedure with an example. Share with you for your reference, the details are as follows:

Overview:

To put it simply, it is a set of SQL statements, which is powerful and can implement some complex logic functions, similar to the methods in the JAVA language.

Stored procedures are somewhat similar to triggers, they are a set of SQL sets, but stored procedures are called actively and are more powerful than triggers, which are called automatically after something is triggered.

Example

DELIMITER / / CREATE PROCEDURE proc (IN num INT) BEGINSELECT * FROM v9_qd_account limit num;END / / DELIMITER

Execute:

SET @ pawning5 * * call proc (@ p_in)

Or

CALL proc (5)

Cycle

DECLARE num int default 5 * set num = 1 * * set num = num + 1 * * DELIMITER / / CREATE PROCEDURE proc (IN sname VARCHAR (20), IN pwd VARCHAR (5), IN qd INT,IN start INT,IN end INT) begin DECLARE var INT; DECLARE myname VARCHAR (30)

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