php - 就像不在存储过程中工作一样

Question

我已经使用 like 运算符编写了存储过程，但是我收到了 mysql 的错误。这是我的查询：

CREATE DEFINER=`ecp`@`localhost` PROCEDURE `sp_getTier4CatBanner`(pSiteid int,pTier4 varchar(100))
BEGIN
    SET @SS = CONCAT("SELECT *  FROM `categorybanners` WHERE TIERCODES LIKE %",pTier4,"%"," and SITEID=",pSiteid," and CATLEVEL='tire4'");
    PREPARE STMT FROM @SS;
END

当我打印查询时，我得到以下结果：

SELECT *  FROM `categorybanners` WHERE TIERCODES LIKE %t2_05% and SITEID=46 and  CATLEVEL='tire4'

错误的主要原因是缺少单引号%t2_05%。请让我知道如何加上单引号，使查询看起来像这样：

SELECT *  FROM `categorybanners` WHERE TIERCODES LIKE '%t2_05%' and SITEID=46 and  CATLEVEL='tire4'

Answer 1

只需将单引号放在第一个 % 之前和最后一个 % 之后：

SET @SS = CONCAT("SELECT *  FROM `categorybanners` WHERE TIERCODES LIKE '%",pTier4,"%'"," and SITEID=",pSiteid," and CATLEVEL='tire4'");

这样你的陈述就变成了：

SELECT * FROM categorybanners WHERE TIERCODES LIKE '%t2_05%' and SITEID=46 and CATLEVEL='tire4'