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某个字段a有个值为
aaa,bbb
我希望查找该字段匹配这两个标签的所有值,如
aaa,bbb,ccc aaa,ddd,bbb bbb,eee,fff,aaa
就是只要含有aaa的同时也含有bbb
最有效率的查询方法是什么
注意:aaa,bbb不一定只有这两个还可能是多个
闭关修行中......
WHERE FIND_IN_SET('aaa','aaa,bbb,ccc') AND FIND_IN_SET('bbb','aaa,bbb,ccc')
WHERE FIND_IN_SET('aaa','aaa,bbb,ccc') AND FIND_IN_SET('bbb','aaa,bbb,ccc') AND FIND_IN_SET('ccc','aaa,bbb,ccc') ...
参见: 在MySQL字段中使用逗号分隔符
select * from A where a like '%aaa%' UNION select * from A where a like '%bbb%' 。使用联合方法查询,比运用and语句要高效很多。
注意:aaa,bbb不一定只有这两个还可能是多个
参见: 在MySQL字段中使用逗号分隔符
select * from A where a like '%aaa%' UNION select * from A where a like '%bbb%' 。使用联合方法查询,比运用and语句要高效很多。