Php 数据库中的Select语句错误

我有一个SELECT语句，但它在MYSQL中给了我一个错误。不知道我做错了什么

SELECT input, 
CASE WHEN input LIKE %is this to% THEN 10 
ELSE CASE WHEN input LIKE %this to you% THEN 12 
END END 
AS  'matches'
FROM tableName
LIMIT 0 , 30

请注意

”

（单引号）

尝试以下操作：

SELECT input,
CASE 
    WHEN input LIKE '%is this to%' THEN 10 
    WHEN input LIKE '%this to you%' THEN 12
ELSE 0
END AS  'matches'
FROM tableName
LIMIT 0 , 30

---

请在问题中添加错误消息Single quotes Missing匹配项为空。

SELECT input,
CASE 
    WHEN input LIKE '%is this to%' THEN 10 
    WHEN input LIKE '%this to you%' THEN 12
ELSE 0
END AS  'matches'
FROM tableName
LIMIT 0 , 30