动态SQL存储过程

(1)需求:根据传入参数是否为空或空字符串来拼接where条件的and语句,实现动态查询功能(不能使用MyBatis)

(2)解决方案:使用if判断语句实现

2.1存储过程 bdc_fwsyq 如下:(不同的mysql客户端写法略有差异,但原理相同,我这边是用的SQLyog)

DELIMITER $$
CREATE DEFINER=`root`@`59.213.105.24` PROCEDURE `bdc_fwsyq`(
IN `in_bdcdzh` VARCHAR(255),
IN `in_qlrzjbh` VARCHAR(255),
IN `in_bdcqzh` VARCHAR(255)
)
BEGIN
SELECT *
FROM bdc_regn_fwsyq
WHERE FWSUOYQLR = IF(`in_bdcdzh` IS NULL OR `in_bdcdzh` = '',FWSUOYQLR,`in_bdcdzh`)
AND QLRZJBH = IF(`in_qlrzjbh` IS NULL OR `in_qlrzjbh` = '',QLRZJBH,`in_qlrzjbh`)
AND BDCQZH = IF(`in_bdcqzh` IS NULL OR `in_bdcqzh` = '',BDCQZH,`in_bdcqzh`)
LIMIT 100;

END$$
DELIMITER ;

2.2存储过程 bdc_fwsyq 调用:

CALL bdc_fwsyq("xx",null,"1111");

2.3以上调用最后执行的SQL语句如下:(实际需要执行的SQL语句可以自行调整存储过程来修改)

SELECT *
FROM bdc_regn_fwsyq
WHERE FWSUOYQLR = "xx"
AND QLRZJBH = QLRZJBH
AND BDCQZH = "1111"
LIMIT 100;

 

posted @ 2018-07-11 08:35  迷途_小羔羊  阅读(614)  评论(0编辑  收藏  举报