Question

我有以下查询（在我的系统中）获得拥有超过6个会员资格的会员总数....

select count(*) as MemberCount from (
   SELECT count(membership.memberid) as MembershipCount from Membership, Package
   WHERE membership.PackageId = Package.Id
   AND membership.DiscountPercentage != 100
   AND Package.PackageTypeId != 1
   AND membership.MembershipStateId != 5
   AND Membership.LocationId = 1
   group by memberid
   having count(membership.memberid) > 6
) NonTrialMemberships

我需要做的是留下外部加入“拥有”部分的临时表，这样我就可以获得超过1,2,3,4,5,6的成员数量列表， 7,8,9,10会员资格

having count(membership.memberid) > 6 <------(OUTER JOIN THIS)

我创建了一个临时表用作连接但不确定如何使用它。我还看到使用内存表可能比临时表更有效...

create table #Temp
(
Num int, 
)

DECLARE @i int = 0
DECLARE @total int = 10

WHILE @i < @total
BEGIN
    SET @i = @i + 1
    Insert Into #Temp values (@i)
END

select * from #Temp


select count(*) as MemberCount from (
    SELECT count(membership.memberid) as MembershipCount from Membership,     Package
    WHERE membership.PackageId = Package.Id
    AND membership.DiscountPercentage != 100
    AND Package.PackageTypeId != 1
    AND membership.MembershipStateId != 5
    AND Membership.LocationId = 1
    group by memberid
    having count(membership.memberid) > 6
) NonTrialMemberships




If(OBJECT_ID('tempdb..#temp') Is Not Null)
Begin
    Drop Table #Temp
End

任何指导都将不胜感激。

谢谢。

Answer 1

尝试使用#temp。

select #temp.num, count(*)
from #temp
left join  
    (
    SELECT count(membership.memberid) as MembershipCount from Membership, Package
    WHERE membership.PackageId = Package.Id
    AND membership.DiscountPercentage != 100
    AND Package.PackageTypeId != 1
    AND membership.MembershipStateId != 5
    AND Membership.LocationId = 1
    group by memberid
    having count(membership.memberid) > 1
    ) ntm 
on ntm.MembershipCount > #temp.num 
group by #temp.num

绝对会根据要求计算每个＆gt; 1，＆gt; 2，...，＆gt; 10组中有11个会员资格的用户。

Answer 2

我会采用不同的方式

lavoro2

Answer 3

您想要选择计数，并获得每个计数（听起来很奇怪，但实际上非常简单）：

SELECT MemberCount, Count(*)
FROM
(
       SELECT count(membership.memberid) as MemberCount
       FROM Membership, Package
       WHERE membership.PackageId = Package.Id
       AND membership.DiscountPercentage != 100
       AND Package.PackageTypeId != 1
       AND membership.MembershipStateId != 5
       AND Membership.LocationId = 1
       group by memberid
       having count(membership.memberid) > 6 
) t
group by MemberCount
order by MemberCount

您提到您希望获得拥有1,2,3等会员资格的会员数量。如果是这种情况，您将需要从查询中删除以下行：

having count(membership.memberid) > 6

这样做将包括所有计数的计数（再次，听起来很奇怪），这似乎是您的要求。如果您想澄清或者我误解了您的问题，请发表评论。

外部加入SQL进行查询

3 个答案: