外連接SQL在具有查詢

Question

我有以下查詢其（在我的系統）得到誰擁有超過6名成員成員總數....

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」的一部分與一個臨時表，所以我可以得到成員數量超過1,2,3,4,5,6,7,8,9,10會員的人數列表

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

我已經創建了一個臨時表作爲連接使用，但不知道如何使用它。我也看到使用內存表可能比臨時表更有效率...

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 

任何指導，將不勝感激。

謝謝。

Answer 1

試試這個，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 

明確地說，它會按照要求對每個> 1，> 2，...，> 10組中的11個成員進行計數。

Answer 2

我會做它用不同的方式

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

您要選擇的數量，並獲得每那些的計數（聽起來不可思議，但它實際上是非常簡單）：

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 

您提到要得到誰擁有的會員數1，2，3等會員資格。如果是這樣的話，你會想從查詢中刪除以下行：

having count(membership.memberid) > 6 

這樣做將包括所有計數的計數（再次，聽起來有些不可思議），這似乎是您的要求。如果您需要澄清，或者我誤解了您的問題，請留下評論。