Question

我有一个SELECT语句，但它在MYSQL中给出了一个错误。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

Answer 1

试试这个：

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

Answer 2

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）

在数据库中选择语句错误

2 个答案: