Reporting Services cumulate field

[yovys]

[|)] Help me please!!!

I need to calculate a field in reporting services, but this field is a cumulate value, and it depends the value of the previous row, is this: I have two columns, the second sum the value of the first column plus the value of its own column in the previous row

Eternally I will be been thankful with any suggestion

Yovys

[KPayne]

Since I don't know the specifics of your table, I've included a T-SQL (SQL Server 2000) example based on a ficticious table.

[quote]
SETQUOTED_IDENTIFIERON
GO
SETANSI_NULLSON
GO

CREATEPROCEDUREGetCumulativeTotal(@StartDatedateti me,@EndDatedatetime)AS

SETNOCOUNTON

CREATETABLE#RunningTotalCache(MyPKint,Pricemoney)

DECLARERunningTotalCursorCURSORFAST_FORWARDFOR
SELECTMyPK,Price
FROMMyTable
WHEREMyDateBETWEEN@StartDateAND@EndDate
ORDERBYMyDate

DECLARE@RunningTotalPricemoney
DECLARE@CurrentPricemoney
DECLARE@CurrentPKint

SET@RunningTotalPrice=0

BEGINTRANSACTION

OPENRunningTotalCursor
FETCHNEXTFROMRunningTotalCursorINTO@CurrentPK,@Cur rentPrice

WHILE@@FETCH_STATUS=0
BEGIN
INSERTINTO#RunningTotalCache(MyPK,Price)VALUES(@Cu rrentPK,@RunningTotalPrice+@CurrentPrice)
SET@RunningTotalPrice=@RunningTotalPrice+@CurrentP rice

FETCHNEXTFROMRunningTotalCursorINTO@CurrentPK,@Cur rentPrice
END
CLOSERunningTotalCursor
DEALLOCATERunningTotalCursor

SELECTMyTable.*,tot.Price
FROMMyTable
INNERJOIN#RunningTotalCachetot
ONtot.MyPK=MyTable.MyPK
WHEREMyTable.MyDateBETWEEN@StartDateAND@EndDate

COMMITTRANSACTION

GO
SETQUOTED_IDENTIFIEROFF
GO
SETANSI_NULLSON
GO
</CODE>

To execute this stored procedure from Query Analyzer:
[quote]
execgetcumulativetotal'01/01/01','01/01/05'
</CODE>

To create the table that this example uses:

[quote]
CREATETABLE[MyTable](
[MyPK][int]IDENTITY(1,1)NOTNULL,
[MyDate][datetime]NULLCONSTRAINT[DF__MyTable__MyDate__1EA48E88]DEFAULT(getdate()),
[Price][money]NULL
)ON[PRIMARY]
GO

/*Loadthetablewithtestdata:
Executethislinemultipletimestofillthetable*/
INSERTINTO[MyTable]([Price])VALUES(RAND()*1000)
</CODE>

Try this out to see how it works and post again if you still have any questions.

Good luck!

Keith Payne
Technical Marketing Solutions