Conditional WHERE Statement?

Jul 23, 2005

Hi all,

I have one for all the blackbelters out there: is there a way i can
make a stored procedure where i can control the where statement with
variables? I have to do some complex transformations to get compose a
fact table for MSAS and there a a lot of similarities between the
queries and a few differences because of different account methods
etc. (booking in starting date, booking stuff on order entry dates
etc) I want to put a combination of different rules in different
members of dimensions.

An example of what i mean:

CREATE STORED PROCEDURE dbo.FILLFACT (@PAR1, @PAR2)
AS
INSERT INTO FactTable (blah blah)

SELECT
IF @PAR1 = 'OrderDate'
SourceView.Orderdate
ELSE
SourceView.StartDate
,
etc etc...

FROM
SourceView

WHERE
IF @PAR2 = 'WholeTable'
1=1
IF @PAR2 = 'Incomplete'
EndDate IS NULL OR EXIST (SELECT * FROM Exceptions WHERE
...., etc)


This way i could fill my fact table with

EXEC dbo.FillFact 'beginDate','Wholetable'
EXEC dbo.FillFact 'begindate', 'Rulebook1'
EXEC dbo.FillFact 'BeginDate', 'Exceptions'
etcetera.

This is not an actual SQL script i use, just an example of what i'm
talking about. Or maybe i could pass the where statement entirley as a
variable? But i can't use SET @PAR1 = 'EndDate IS NULL' and then use
WHERE @PAR1 can I?

I hope i'm making sense. Does anyone know if this is possible? Right
now i have a procedure that is composed of a dozen of sql scripts that
are mostly the same, but i have to copy it for every combination of
situations and then, of course, new stuff has to be added on 12
different places. Again and again.

Any thoughts?


TIA,

Gert-Jan van der Kamp

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hiI need to write a stored procedure that takes input parameters,andaccording to these parameters the retrieved fields in a selectstatement are chosen.what i need to know is how to make the fields of the select statementconditional,taking in consideration that it is more than one fieldaddedfor exampleSQLStmt="select"if param1 thenSQLStmt=SQLStmt+ field1end ifif param2 thenSQLStmt=SQLStmt+ field2end if

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(
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@endRef int
)

AS

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Code Block

SELECT Ficha, Almoxarifado, [Código do Item], Descrição, Unidades.Unidade,
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2
3 ' *** Declare the variables
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5 Dim updStatCmd As String
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28 "END "
29
30
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40
41 insConnCmd.Connection.Open()
42 insConnCmd.ExecuteNonQuery()
43 insConnCmd.Connection.Close()
44
45 updConnCmd.Connection.Open()
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49 End Sub
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9
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22
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Hi,
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