[英]SQL Server 2000 Query of total value and value from max date
我有這個RoomTable有價值
SID Room Date APhase BPhase ACount BCount
1 One 10/28/2012 4 5 3 6
2 One 10/29/2012 2 3 -1 -1
3 One 10/30/2012 4 5 7 -1
4 Two 10/28/2012 8 3 2 3
5 Two 10/30/2012 3 5 4 6
6 Three 10/29/2012 5 8 2 -1
7 Three 10/30/2012 5 6 -1 4
8 Four 10/29/2012 6 2 -1 -1
9 Four 10/30/2012 5 8 -1 -1
我想要的是返回以下內容:
我可以使用此查詢獲得數字1的查詢
SELECT Room, sum(APhase) as TotalAPhase, sum(BPhase) as TotalBPhase
FROM RoomTable
WHERE Date between '10/28/2012' and '10/30/2012'
group by Room
order by Room
但我對如何包含2-4號查詢感到困惑。
這是我想要的輸出
Room TotalAPhase TotalBPhase ACount BCount
One 10 13 7 6
Two 11 8 4 6
Three 10 13 2 4
Four 11 10 0 0
任何想法將不勝感激。 謝謝。
希望這適用於您的情況:
SELECT
Room
,SUM(APhase) AS TotalAPhase
,SUM(BPhase) AS TotalBPhase
,ISNULL(( SELECT TOP 1 RT1.ACount
FROM RoomTable RT1
WHERE RT1.Room = RT.Room
AND RT1.ACount != -1
ORDER BY RT1.Date DESC
), 0) AS ACount
,ISNULL(( SELECT TOP 1 RT2.BCount
FROM RoomTable RT2
WHERE RT2.Room = RT.Room
AND RT2.BCount != -1
ORDER BY RT2.Date DESC
), 0) AS BCount
FROM RoomTable RT
--WHERE Date between '10/28/2012' and '10/30/2012'
GROUP BY Room
ORDER BY Room
我不確定你是否真的需要where子句,所以我評論了它。 在結果表中,RoomB的TotalBPhase值應該是14,從這個SQL Fiddle演示中可以看出。
您可以使用@ yildizm85的答案,或者如果您需要更高性能的代碼,您可以分解較小步驟上的所有任務並使用表變量來實現相同的目標。 見下面的查詢......
declare @roomResult table
(Room nvarchar(50), maxadate datetime, maxbdate datetime, TotalAPhase int , TotalBPhase int , acount int, bcount int)
insert into @roomResult
SELECT Room, null,null,sum(APhase) as TotalAPhase, sum(BPhase) as TotalBPhase ,0,0
FROM RoomTable
group by Room
order by Room
update @roomresult
set maxadate = mxdate
from
(
select room roomname, max( date) mxdate from
(
select room, date , case when acount = -1 then null else acount end acount , case when bcount = -1 then null else bcount end bcount
from roomtable ) as a where a.acount is not null
group by room
) b inner join @roomresult c on b.roomname = c.room
update @roomresult
set maxbdate = mxdate
from
(
select room roomname, max( date) mxdate from
(
select room, date , case when bcount = -1 then null else bcount end bcount
from roomtable ) as a where a.bcount is not null
group by room
) b inner join @roomresult c on b.roomname = c.room
update @roomresult
set acount = r.acount
from @roomresult rr inner join roomtable r
on rr.room = r.room and rr.maxadate = r.date
update @roomresult
set bcount = r.bcount
from @roomresult rr inner join roomtable r
on rr.room = r.room and rr.maxbdate = r.date
select Room,TotalAPhase,TotalbPhase,ACount,BCount From @roomResult
您可以嘗試查詢類似這樣的內容>>>
SELECT Room, sum(APhase) as TotalAPhase, sum(BPhase) as TotalBPhase
FROM RoomTable
WHERE Date =(select max(Date) from RoomTable group by Room order by Room)
and ACount=(update RoomTable set ACount=0 where ACount<0) and and ACount=(update RoomTable set BCount=0 where BCount<0)
group by Room
order by Room
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