对于这些数据，我想编写一个程序，在每个月末给出余额清单。换句话说，我们可以说我必须在每月末（不是逐月）找到FIFO概念的运行平衡。这是表
create Table transactions ( [Date] Date, SECURITY_NAME VarChar(20), LOC VarChar(20), Investor VarChar(20), BUY_SELL VarChar(10), Quantity numeric(11, 2), TRANS_RATE numeric(11, 2), Inventory_value numeric(11,2) )
Insert into transactions values ('1-Jan-2014', 'HDFC', 'HO', 'OS', 'B', 125.00, 125.00, null)
Insert into transactions values ('2-Jan-2014', 'ICICI', 'HO', 'OS', 'B', 150.00, 145.00, null)
Insert into transactions values ('3-Jan-2014', 'Axis', 'HO', 'OS', 'B', 25.00, 150.00, null)
Insert into transactions values ('4-Feb-2014', 'ICICI', 'HO', 'OS', 'B', 100.00, 150.00, null)
Insert into transactions values ('5-Feb-2014', 'ICICI', 'HO', 'OS', 'S', 50.00, 185.00, null)
Insert into transactions values ('6-Feb-2014', 'HDFC', 'HO', 'OS', 'S', 50.00, 125.00, null)
Insert into transactions values ('1-Mar-2014', 'HDFC', 'HO', 'OS', 'B', 100.00, 125.00, null)
Insert into transactions values ('2-Mar-2014', 'ICICI', 'HO', 'OS', 'S', 125.00, 145.00, null)
Insert into transactions values ('3-Mar-2014', 'HDFC', 'HO', 'OS', 'S', 125.00, 150.00, null)
Insert into transactions values ('4-Mar-2014', 'ICICI', 'HO', 'OS', 'B', 100.00, 175.00, null)
Insert into transactions values ('6-Mar-2014', 'Axis', 'HO', 'OS', 'B', 125.00, 125.00, null)
Insert into transactions values ('5-Apr-2014', 'Axis', 'HO', 'OS', 'S', 75.00, 185.00, null)
Insert into transactions values ('6-Apr-2014', 'ICICI', 'HO', 'OS', 'S', 50.00, 125.00, null)
Insert into transactions values ('6-Apr-2014', 'HDFC', 'HO', 'OS', 'B', 25.00, 125.00, null)
update transactions set Inventory_value=(quantity*trans_rate)
我试图得到这样的输出，即每个月末的数量余额（仅限FIFO）
Month SECURITY_NAME LOC Investor Balance_Qty Inventry_value
Jan HDFC HO OS 125 15625
Jan ICICI HO OS 150 21750
Jan Axis HO OS 25 3750
Feb ICICI HO OS 200 29500
Feb HDFC HO OS 75 9375
Feb Axis HO OS 25 3750
Mar HDFC HO OS 50 7500
Mar ICICI HO OS 175 23750
Mar Axis HO OS 150 19375
Apr Axis HO OS 75 9375
Apr ICICI HO OS 125 21250
Apr HDFC HO OS 75 10625
Inventory_value=(quantity*trans_rate)
答案 0 :(得分：0)
我在查询中写了逻辑
CREATE TABLE #NEWTABLE([Month] VARCHAR(20), SECURITY_NAME VARCHAR(50), LOC VARCHAR(50), Investor VARCHAR(50), Balance_Qty INT, Inventry_value NUMERIC(18,2))
DECLARE @RNO INT
DECLARE @DATE DATE
DECLARE @SECURITYNAME VARCHAR(50)
DECLARE @LOC VARCHAR(50)
DECLARE @INVESTOR VARCHAR(50)
DECLARE @BUYSELL CHAR
DECLARE @QUANTITY INT
DECLARE @PREV_MONTH_QUANTITY INT
DECLARE @SELL_QUANTITY INT
DECLARE @BAL_QUANTITY INT
DECLARE @RNO_MONTHDATES INT
DECLARE @LASTINMONTH INT
DECLARE @FIRSTMONTH DATE
DECLARE @PREV_MONTH DATE
SELECT @FIRSTMONTH = MIN([DATE]) FROM transactions
DECLARE rollCursor CURSOR FOR
SELECT *,
MAX(RNO_MONTHDATES) OVER(PARTITION BY DATEPART(MONTH,[DATE]))MAXX
FROM
(
select [DATE],SECURITY_NAME,LOC,INVESTOR,BUY_SELL,QUANTITY,
ROW_NUMBER() OVER(PARTITION BY DATEPART(MONTH,[DATE]),SECURITY_NAME ORDER BY DATEPART(MONTH,[DATE]), SECURITY_NAME,BUY_SELL) RNO
,ROW_NUMBER() OVER(PARTITION BY DATEPART(MONTH,[DATE]) ORDER BY DATEPART(MONTH,[DATE]), (SELECT(0))) RNO_MONTHDATES
from transactions
)TAB
ORDER BY DATEPART(MONTH,[DATE]), SECURITY_NAME,BUY_SELL,RNO_MONTHDATES
OPEN rollCursor
-- Loop starts from here
FETCH NEXT FROM rollCursor
INTO @DATE,@SECURITYNAME,@LOC,@INVESTOR,@BUYSELL,@QUANTITY,@RNO,@RNO_MONTHDATES,@LASTINMONTH
WHILE @@FETCH_STATUS = 0
BEGIN
-- First month's records will be inserted directly
IF(DATEPART(MONTH,@DATE) = DATEPART(MONTH,@FIRSTMONTH))
BEGIN
INSERT INTO #NEWTABLE
SELECT @DATE,@SECURITYNAME,@LOC,@INVESTOR,@QUANTITY,NULL
END
ELSE IF(DATEPART(MONTH,@DATE) <> DATEPART(MONTH,@FIRSTMONTH))
BEGIN
-- If Buy is the 1st record for a SECURITYNAME then it will not take SELL because its already included inside the below the query
IF(@RNO = 1)
BEGIN
IF(@BUYSELL = 'S')
BEGIN
SET @QUANTITY = 0
END
SET @PREV_MONTH_QUANTITY=0
SET @SELL_QUANTITY=0
-- Finds previous month quantity
SELECT @PREV_MONTH_QUANTITY = ISNULL(Balance_Qty,0)
FROM #NEWTABLE
WHERE SECURITY_NAME = @SECURITYNAME
AND DATEPART(MONTH,[MONTH]) =
(SELECT MAX(DATEPART(MONTH,[MONTH])) FROM #NEWTABLE WHERE DATEPART(MONTH,[MONTH]) < DATEPART(MONTH,CAST(@DATE AS DATE)))
-- Find current month's Sell Quantity of current SECURITYNAME
SELECT @SELL_QUANTITY = ISNULL(Quantity,0) FROM transactions
WHERE SECURITY_NAME = @SECURITYNAME AND BUY_SELL = 'S' AND DATEPART(MONTH,@DATE) = DATEPART(MONTH,[DATE])
INSERT INTO #NEWTABLE
SELECT @DATE,@SECURITYNAME,@LOC,@INVESTOR,(@PREV_MONTH_QUANTITY+@QUANTITY)-@SELL_QUANTITY,NULL
END
-- If it is last record in current month, it finds out the missing SECURITYNAME in current month, take from previous month and add as current month
IF(@RNO_MONTHDATES = @LASTINMONTH)
BEGIN
INSERT INTO #NEWTABLE
SELECT CAST(CAST(YEAR([MONTH]) AS VARCHAR(4))+'-'+CAST(MONTH(@DATE) AS VARCHAR(14))+'-01' AS DATE),
SECURITY_NAME,LOC,INVESTOR,BALANCE_QTY,INVENTRY_VALUE
FROM #NEWTABLE
WHERE SECURITY_NAME IN
(
SELECT SECURITY_NAME
FROM #NEWTABLE
WHERE DATEPART(MONTH,[MONTH]) =
(SELECT MAX(DATEPART(MONTH,[MONTH])) FROM #NEWTABLE WHERE DATEPART(MONTH,[MONTH]) < DATEPART(MONTH,@DATE))
EXCEPT
SELECT SECURITY_NAME
FROM #NEWTABLE
WHERE DATEPART(MONTH,[MONTH]) = DATEPART(MONTH,@DATE)
)
AND DATEPART(MONTH,[MONTH]) =
(SELECT MAX(DATEPART(MONTH,[MONTH])) FROM #NEWTABLE WHERE DATEPART(MONTH,[MONTH]) < DATEPART(MONTH,@DATE))
END
END
FETCH NEXT FROM rollCursor
INTO @DATE,@SECURITYNAME,@LOC,@INVESTOR,@BUYSELL,@QUANTITY,@RNO,@RNO_MONTHDATES,@LASTINMONTH
END
CLOSE rollCursor;
DEALLOCATE rollCursor;
SELECT CAST(DATENAME(MONTH,[Month])AS VARCHAR(3)), SECURITY_NAME,LOC,Investor,Balance_Qty,Inventry_value
FROM #NEWTABLE
请添加计算以查找新表的Inventry_value。