如何用Replace查询是否包含某个特定字符串
Replace关键字主要是用来将字符串中的某个字符替换成别的字符，今天要为大家介绍下使用它来查询是否包含某个特定字符串，示例代码如下，感兴趣的朋友可以参考下 在sql server中Replace关键字主要是用来将字符串中的某个字符替换成别的字符，今天要逆向思维，
Replace关键字主要是用来将字符串中的某个字符替换成别的字符，今天要为大家介绍下使用它来查询是否包含某个特定字符串，示例代码如下，感兴趣的朋友可以参考下
在sql server中Replace关键字主要是用来将字符串中的某个字符替换成别的字符，今天要逆向思维，它还可以用来查询是否包含某个特定字符串，例如给定下面数据集
期望从这个数据集中获取包含“aaa”字符的记录，注意第2条数据不是包含“aaa”，，而是包含“aaaa”。期望的”“结果如下：
传统的思维肯定是想如何查出包含有3个a的字符串，有的人会像用like，但这样会连同4个a也查出来。这里我们就思考用Replace替换掉字符串中的“aaa”，如果能够替换掉，那就证明该字符串中含有这个字符，替换掉了以后肯定和原字符串不一样，因此有了下面的SQL出炉。 代码如下:
SELECT * FROM [master].[dbo].[Table_5]
WHERE REPLACE(','+strNum+',', ',aaa,', '') ','+strNum+','
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