mysql存储过程

数据库存储过程

1.无参数的存储过程

USE `markmanger`$$
DROP PROCEDURE IF EXISTS `test_sp2`$$
CREATE DEFINER=`hao`@`%` PROCEDURE `test_sp2`()
    BEGIN
        UPDATE ContactBook SET CONTACTNAME='www111' WHERE CONTACTID=5;
     
    END$$   

2.有参数的(无事务)

2.1 输入参数的存储过程

DELIMITER $$
USE `markmanger`$$
DROP PROCEDURE IF EXISTS `test_sp2`$$
CREATE DEFINER=`hao`@`%` PROCEDURE `test_sp2`(uname VARCHAR(10),phoneum VARCHAR(10))
    BEGIN
    UPDATE ContactBook SET CONTACTNAME=uname WHERE CONTACTID=5;
    UPDATE ContactBook SET CONTACTPHONE=phoneum WHERE CONTACTID=5;
    END$$
DELIMITER ;    

调用

CALL test_sp2('aa','bb');

1.2输出参数的存储过程

DELIMITER $$
USE `markmanger`$$
DROP PROCEDURE IF EXISTS `test_sp3`$$
CREATE DEFINER=`hao`@`%` PROCEDURE `test_sp3`(OUT s VARCHAR(10))
    BEGIN
    SELECT COUNT(*) FROM ContactBook INTO s; 
    SELECT s;
    END$$
DELIMITER ;

调用

CALL test_sp3(@S);

3.带事务的存储过程

DELIMITER $$
USE `markmanger`$$
DROP PROCEDURE IF EXISTS `test_sp4`$$
CREATE DEFINER=`hao`@`%` PROCEDURE `test_sp4`()
    BEGIN 
    DECLARE t_error INTEGER DEFAULT 0;  
    DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET t_error=1;   
        START TRANSACTION;  

           SELECT COUNT(*) FROM ContactBook;
                         
        IF t_error = 1 THEN  
            ROLLBACK;  
        ELSE  
            COMMIT;  
        END IF;  
    END$$  
DELIMITER ; 

调用

CALL test_sp4();