Question

我有一个MySQL select语句，想把它变成一个查询。

 select * from users where...

where子句有四个部分，需要以这种方式排序：

 1. where description = "query"

 2. where description = "%query%"

 3. where description = "q1" or description = "q2"

 4. where description = "%q1%" or description = "%q2%"

Answer 1

一种解决方案是UNION结果，并为每个查询添加一个假的OrderBy字段。

SELECT   1 as OrderBy, *
FROM     users
WHERE    description = "query"
UNION ALL
SELECT   2 as OrderBy, *
FROM     users
WHERE    description = "%query%"
...
ORDER BY
         OrderBy

Answer 2

我认为以下内容将产生您需要的结果

select * from users 
where description like "%query%" 
  or description like "%q1%" 
  or description like "%q2%"

MySQL中的SQL排序

2 个答案: