Sql server )这是不支持或记录,也不能保证工作(现在或将来)。正如我在我的答案中发布的,小心使用这种方法。默认情况下,SUM()OVER()使用RANGE UNBOUNDED preference,它使用磁盘假脱机。随着源数据越来越大,您将真正看到这对磁盘假脱机的影响
Sql server )这是不支持或记录,也不能保证工作(现在或将来)。正如我在我的答案中发布的,小心使用这种方法。默认情况下,SUM()OVER()使用RANGE UNBOUNDED preference,它使用磁盘假脱机。随着源数据越来越大,您将真正看到这对磁盘假脱机的影响,sql-server,tsql,cumulative-sum,Sql Server,Tsql,Cumulative Sum,)这是不支持或记录,也不能保证工作(现在或将来)。正如我在我的答案中发布的,小心使用这种方法。默认情况下,SUM()OVER()使用RANGE UNBOUNDED preference,它使用磁盘假脱机。随着源数据越来越大,您将真正看到这对磁盘假脱机的影响。如果您使用前面的行无界它将发生在内存中,直到达到非常高端…这里如何使用where子句并获得原始结果的运行总数?谢谢!只是想提一下,在递归cte中,如果您的amt是十进制的,那么x.rt+y.amt必须转换为十进制,否则它会抛出“类型在锚点和递
)这是不支持或记录,也不能保证工作(现在或将来)。正如我在我的答案中发布的,小心使用这种方法。默认情况下,
SUM()OVER()
使用RANGE UNBOUNDED preference
,它使用磁盘假脱机。随着源数据越来越大,您将真正看到这对磁盘假脱机的影响。如果您使用前面的行无界
它将发生在内存中,直到达到非常高端…这里如何使用where子句并获得原始结果的运行总数?谢谢!只是想提一下,在递归cte中,如果您的amt是十进制的,那么x.rt+y.amt必须转换为十进制,否则它会抛出“类型在锚点和递归部分之间不匹配”@Jack0fshad0ws谢谢,一定要记住,但答案是基于这个问题的,它有amt int
@AaronBertrand我不完全理解奇怪的更新方法的问题,我想知道它是否能满足我的需求而不必担心。我必须在用户有积分的地方进行抽奖,每个积分都是一次机会。我没有任何订单。用户A得10分,用户B得25分,用户Z得15分。所以我的累积机会可能是A 10,B 25 35,Z 15 50。如果订单发生变化,比如B2525,Z1540,A1050,我可以毫无错误地抽奖1到50之间的随机数。我使用古怪的更新安全吗?@Horaciux我不知道为什么你需要古怪的更新。但我现在没有能力确定你是否安全。。。你需要测试一下it@AaronBertrand无论如何,谢谢你。我提出一个完整的问题。
create table Transactions(Tid int,amt int)
insert into Transactions values(1, 100)
insert into Transactions values(2, -50)
insert into Transactions values(3, 100)
insert into Transactions values(4, -100)
insert into Transactions values(5, 200)
TID amt balance
--- ----- -------
1 100 100
2 -50 50
3 100 150
4 -100 50
5 200 250
select *, sum(amt) over (order by Tid) as running_total from Transactions
select *,(select sum(amt) from Transactions where Tid<=t.Tid) as running_total from Transactions as t
SELECT t1.TID, t1.amt, RunningTotal = SUM(t2.amt)
FROM dbo.Transactions AS t1
INNER JOIN dbo.Transactions AS t2
ON t1.TID >= t2.TID
GROUP BY t1.TID, t1.amt
ORDER BY t1.TID;
SELECT TID, amt, RunningTotal = amt + COALESCE(
(
SELECT SUM(amt)
FROM dbo.Transactions AS i
WHERE i.TID < o.TID), 0
)
FROM dbo.Transactions AS o
ORDER BY TID;
DECLARE @t TABLE
(
TID INT PRIMARY KEY,
amt INT,
RunningTotal INT
);
DECLARE @RunningTotal INT = 0;
INSERT @t(TID, amt, RunningTotal)
SELECT TID, amt, RunningTotal = 0
FROM dbo.Transactions
ORDER BY TID;
UPDATE @t
SET @RunningTotal = RunningTotal = @RunningTotal + amt
FROM @t;
SELECT TID, amt, RunningTotal
FROM @t
ORDER BY TID;
;WITH x AS
(
SELECT TID, amt, RunningTotal = amt
FROM dbo.Transactions
WHERE TID = 1
UNION ALL
SELECT y.TID, y.amt, x.RunningTotal + y.amt
FROM x
INNER JOIN dbo.Transactions AS y
ON y.TID = x.TID + 1
)
SELECT TID, amt, RunningTotal
FROM x
ORDER BY TID
OPTION (MAXRECURSION 10000);
;WITH y AS
(
SELECT TID, amt, rn = ROW_NUMBER() OVER (ORDER BY TID)
FROM dbo.Transactions
), x AS
(
SELECT TID, rn, amt, rt = amt
FROM y
WHERE rn = 1
UNION ALL
SELECT y.TID, y.rn, y.amt, x.rt + y.amt
FROM x INNER JOIN y
ON y.rn = x.rn + 1
)
SELECT TID, amt, RunningTotal = rt
FROM x
ORDER BY x.rn
OPTION (MAXRECURSION 10000);
CREATE TABLE #x
(
rn INT PRIMARY KEY,
TID INT,
amt INT
);
INSERT INTO #x (rn, TID, amt)
SELECT ROW_NUMBER() OVER (ORDER BY TID),
TID, amt
FROM dbo.Transactions;
;WITH x AS
(
SELECT TID, rn, amt, rt = amt
FROM #x
WHERE rn = 1
UNION ALL
SELECT y.TID, y.rn, y.amt, x.rt + y.amt
FROM x INNER JOIN #x AS y
ON y.rn = x.rn + 1
)
SELECT TID, amt, RunningTotal = rt
FROM x
ORDER BY TID
OPTION (MAXRECURSION 10000);
DROP TABLE #x;
CREATE TABLE #x
(
TID INT PRIMARY KEY,
amt INT,
rt INT
);
INSERT #x(TID, amt)
SELECT TID, amt
FROM dbo.Transactions
ORDER BY TID;
DECLARE @rt INT, @tid INT, @amt INT;
SET @rt = 0;
DECLARE c CURSOR LOCAL STATIC READ_ONLY FORWARD_ONLY
FOR SELECT TID, amt FROM #x ORDER BY TID;
OPEN c;
FETCH c INTO @tid, @amt;
WHILE @@FETCH_STATUS = 0
BEGIN
SET @rt = @rt + @amt;
UPDATE #x SET rt = @rt WHERE TID = @tid;
FETCH c INTO @tid, @amt;
END
CLOSE c; DEALLOCATE c;
SELECT TID, amt, RunningTotal = rt
FROM #x
ORDER BY TID;
DROP TABLE #x;
SELECT TID, amt,
RunningTotal = SUM(amt) OVER (ORDER BY TID ROWS UNBOUNDED PRECEDING)
FROM dbo.Transactions
ORDER BY TID;
SELECT TID, amt,
RunningTotal = SUM(amt) OVER (ORDER BY TID)
FROM dbo.Transactions
ORDER BY TID;
SELECT TID, amt,
RunningTotal = SUM(amt) OVER (ORDER BY TID RANGE UNBOUNDED PRECEDING)
FROM dbo.Transactions
ORDER BY TID;
SELECT T1.* ,
T2.RunningSum
FROM dbo.Transactions As T1
CROSS APPLY ( SELECT SUM(amt) AS RunningSum
FROM dbo.Transactions AS CAT1
WHERE ( CAT1.TId <= T1.TId )
) AS T2
SELECT * ,
SUM(T1.amt) OVER ( ORDER BY T1.TId
ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW ) AS RunningTotal
FROM dbo.Transactions AS t1
DECLARE @RunningBalance int = 0
SELECT Tid, Amt, 0 AS RunningBalance
INTO #TxnTable
FROM Transactions
ORDER BY Tid
UPDATE #TxnTable
SET @RunningBalance = RunningBalance = @RunningBalance + Amt
SELECT * FROM #TxnTable
DROP TABLE #TxnTable
select v.ID
,CONVERT(VARCHAR(10), v.EntryDate, 103) + ' ' + convert(VARCHAR(8), v.EntryDate, 14)
as EntryDate
,case
when v.CreditAmount<0
then
ISNULL(v.CreditAmount,0)
else
0
End as credit
,case
when v.CreditAmount>0
then
v.CreditAmount
else
0
End as debit
,Balance = SUM(v.CreditAmount) OVER (ORDER BY v.ID ROWS UNBOUNDED PRECEDING)
from VendorCredit v
order by v.EntryDate desc
SELECT date, sum(count(DISTINCT unique_id)) OVER (ORDER BY date) AS total_per_date
FROM dbo.table
GROUP BY date