外连接SQL在具有查询

Question

我有以下查询其（在我的系统）得到谁拥有超过6名成员成员总数....

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 

我需要做的是左外部加入“有”的一部分与一个临时表，所以我可以得到成员数量超过1,2,3,4,5,6,7,8,9,10会员的人数列表

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

我已经创建了一个临时表作为连接使用，但不知道如何使用它。我也看到使用内存表可能比临时表更有效率...

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，将不胜感激。

谢谢。

Answer 1

试试这个，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 

明确地说，它会按照要求对每个> 1，> 2，...，> 10组中的11个成员进行计数。

Answer 2

我会做它用不同的方式

SELECT [MembershipCount], Count(1) 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 
) 
order by Count(1) Desc 

Answer 3

您要选择的数量，并获得每那些的计数（听起来不可思议，但它实际上是非常简单）：

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 

您提到要得到谁拥有的会员数1，2，3等会员资格。如果是这样的话，你会想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，听起来有些不可思议），这似乎是您的要求。如果您需要澄清，或者我误解了您的问题，请留下评论。