带组的Mysql查询

Question

我有下表:

id  club_id club_option_id created
---|-------|--------------|-------
1  | 1     | 2            | 2015-02-11 16:31:23
2  | 1     | 3            | 2015-02-11 16:31:23
3  | 2     | 2            | 2015-03-06 08:16:02

我想选择有两个选项(2 和 3)的俱乐部 (club_id)

我没有得到以下查询的任何结果:

SELECT club_id FROM 
club_options_to_clubs 
WHERE club_option_id = 2 AND club_option_id = 3  
GROUP BY club_id

结果如何得到 club_id 1？

Answer 1

你可以这样做 -

select 
t1.club_id from table_name t1
where t1.club_option_id = 2
and exits (
  select 1 from table_name t2
  where t1.club_id = t2.club_id
  and t2.club_option_id = 3
)

另一种方式是

select club_id from table_name
where club_option_id in (2,3)
group by club_id 
having count(*) = 2

使用上述方法，如果您需要检查多个 club_option_id，将它们传递到 in 函数中，然后使用 having count(*) = n 中的数字 这里 n = in 函数中的项目数。