Question

我的mysql数据库中有这个表

+-----+----------+------+----------+
| id  | group_id | a_id | status   |
+-----+----------+------+----------+
|   2 |      144 |  266 | active   |
|   7 |      160 |  105 | inactive |
|   8 |        0 |  262 | inactive |
|  11 |      120 |  260 | inactive |
|  12 |      120 |  260 | inactive |
|  13 |      121 |  260 | active   |
|  14 |      122 |  258 | active   |
|  14 |      122 |  258 | inactive |
|  16 |      130 |  210 | active   |
|  17 |      130 |  210 | active   |
+-----+----------+------+----------+

我需要选择a_id，使得同一组（group_id）中的所有状态必须处于非活动状态且不同于0.我想要获得的实际上是一个id数组（105,260），来自此表。 / p>

我来到这个sql，但显然它无法正常工作：

select a_id from tab_name where group_id<>0 and group_id in 
  (select group_id from tab_name where status="inactive" 
    group by group_id having status="inactive")

Answer 1

SELECT   DISTINCT a_id
FROM     yourtable
WHERE    group_id!=0
GROUP BY a_id, group_id
HAVING   SUM(status='inactive')=COUNT(*);

请参阅小提琴here。

Answer 2

你可以像这样轻松地使用它

   select a_id from tab_name where group_id<>0 and status="inactive" 
   group by group_id

更新

   select a_id from tab_name where group_id<>0 and status="active" 
  and a_id not in (select a_id from tab_name where status ='inactive')
   group by group_id

demo

Answer 3

尝试以下

select a_id from tab_name where group_id<>0 and status="inactive"

Answer 4

问题在于，对于您的查询，如果存在单个非活动行，则将返回该组。相反，您可以尝试使用子查询来检查组中没有项目是否处于非活动状态或group_id为0：

SELECT t1.a_id FROM tab_name t1 
WHERE NOT EXISTS(
               SELECT * FROM tab_name t2 
              WHERE t1.group_id = t2.group_id 
                 AND (t2.status = "inactive" OR t2.group_id = 0))

Answer 5

我认为您可能需要稍微调整一下您的查询并使用DISTINCT代替GROUP BY

试试这个：

select a_id from tab_name where group_id<>0 and group_id in 
(select distinct group_id from tab_name where status="inactive")

具有group by的特定SQL无法正常工作

5 个答案: