SQL：在一个表中查找一对多

有一张桌子： t1

问题是:

---

需要查找“Acc Status”=在线且“Acc Status”=激活的所有Id

您可以在下面的查询中尝试-

SELECT id
FROM T1
WHERE AccStatus IN ('Online', 'Activated')
GROUP BY id
HAVING COUNT(DISTINCT AccStatus) = 2;

---

您可以尝试以下查询-

SELECT id
FROM T1
WHERE AccStatus IN ('Online', 'Activated')
GROUP BY id
HAVING COUNT(DISTINCT AccStatus) = 2;

尝试下面的查询

SELECT id
FROM Table_name
WHERE AccStatus = 'Online' 
and id IN (SELECT id FROM Table_name wHERE AccStatus = 'Activated')

尝试下面的查询

SELECT id
FROM Table_name
WHERE AccStatus = 'Online' 
and id IN (SELECT id FROM Table_name wHERE AccStatus = 'Activated')

---

您必须按id对

进行分组

并计算

accstatus

的不同值：

select id 
from t1
where accstatus in ('Online', 'Activated')
group by id
having count(distinct accstatus) = 2

如果您需要仅具有这些

accstatus

值的ID：

select id 
from t1
group by id
having
  count(distinct accstatus) = 2
  and 
  sum(case when accstatus not in ('Online', 'Activated') then 1 else 0 end) = 0

---

您必须按id对

进行分组

并计算

accstatus

的不同值：

select id 
from t1
where accstatus in ('Online', 'Activated')
group by id
having count(distinct accstatus) = 2

如果您需要仅具有这些

accstatus

值的ID：

select id 
from t1
group by id
having
  count(distinct accstatus) = 2
  and 
  sum(case when accstatus not in ('Online', 'Activated') then 1 else 0 end) = 0