sql 通配符小问题 在线急等
本人mysql菜鸟一枚
遇到通配符的问题求助各位大神
我想选取users表中姓名包含"szo"或者"sz?"的数据
所以写了以下代码:
select * from users where name like '%sz[o?]%'
数据库有这样的数据
但是返回值是0
尝试
select * from users where name like '%szo%' or name like '%sz?%'
有结果
请问这两个有什么不一样?
------解决方案--------------------
mysql like 的通配符只有 "_" 和 "%"
"_"是匹配任意单个字符
"%"是匹配任意多个字符。
select * from users where name like '%sz[o?]%'
的意思就是 name 中包含 sz[o?] 的记录。
而不是 包含 szo 或 sz?的记录
------解决方案--------------------
like并不是正则表达式匹配。而只是通配符%和_等匹配,因此并不支持[xy]这种字符组。
你可以尝试REGEXP
------解决方案--------------------
select * from users where name like '%szo%' or name like '%szo?%'

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