MySql 查询在字段中包含一个字符串

Question

The question may be asked several times and I checked all of them but I can't get the answer. I have a field named variables in my database 'test'.I have worked the query

select 'variables' from test WHERE variables LIKE '%{$ifIndex}%';

variables field contains comma seperated strings like ifIndex, IfType, IfStatus but I can't get it!

Answer 1

Try the following:

select variables from test WHERE 'ifIndex' LIKE CONCAT('%',`variables` , '%') ;

if you're trying to match just the start:

select variables from test WHERE 'ifIndex' LIKE CONCAT(`variables` , '%') 

Answer 2

当您将要查找的字符串仅使用 % 作为通配符放在任一侧时，这将实现您想要的结果。

select variables from test WHERE variables LIKE '%ifIndex%';

Answer 3

Try the following code

select variables from test
WHERE variables LIKE '%{$ifIndex}%';

For field names don't put the single quotaition.