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Dynamic WHERE clause in Stored Procedure

I have a stored procedure usp_X.

I am executing another stored procedure usp_Y inside usp_X with an output string(sWHERE) as below

(Desc1 = ’08-100’ AND Year=’2008’ AND ‘Desc2’ = ‘PERM-1’) OR
(Desc1 = ’09-110’ AND Year=’2009’ AND ‘Desc2’ = ‘PERM-2’) OR
(Desc1 = ’10-289’ AND Year=’2010’ AND ‘Desc2’ = ‘PERM-3’)

I want use the above ouput string in the WHERE clause as

SELECT
                col1,
                col2
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE
               --- use the above output here--- (like sWHERE)

How can i accomplish? would someone help me out !

Thanks.





0
cimscims
Asked:
cimscims
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2 Solutions
 
Aneesh RetnakaranDatabase AdministratorCommented:
EXEC( 'SELECT
                col1,
                col2
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE 1=1 '+ sWhere )
0
 
Guy Hengel [angelIII / a3]Billing EngineerCommented:
you could do that only by making your query in usp_X also dynamic.


declare @sql varchar(max)
declare @where varchar(max)

exec usp_Y @where output

set @sql = 'SELECT
                col1,
                col2
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE ' + @where

exec(@sql)

Open in new window

0
 
John ClaesSenior .Net Consultant & Technical AnalistCommented:
EXEC( 'SELECT
                col1,
                col2
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE 1=1 AND ( ' + sWhere + ')' )
0
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HainKurtSr. System AnalystCommented:
WHERE 1=1 AND ( ' + sWhere + ')' )

"1=1" is required in case sWhere is null
but when it is null 34917499 will fail
also 34917496 will fail
34917448 will also fail :)

so, we need to check for null/empty:

declare @sql varchar(max) = 'SELECT col1, col2 FROM table1 A join table2 B ON A.Id = B.Id';
if sWhere<>'' set @sql=@sql + ' WHERE ' + sWhere;
EXEDC (@sql)
0
 
HainKurtSr. System AnalystCommented:
typo above, should read as:

declare @sql varchar(max) = 'SELECT col1, col2 FROM table1 A join table2 B ON A.Id = B.Id';
if sWhere<>'' set @sql=@sql + ' WHERE ' + sWhere;
EXEC (@sql)
0
 
cimscimsAuthor Commented:
I am getting a synrtax error in the SELECT near the column
 CONVERT(varchar,date,101) as date.
0
 
SharathData EngineerCommented:
You should enclose the date in quotes. Post your query.
0
 
cimscimsAuthor Commented:

EXEC( 'SELECT
                Id,
                desc1,
                CONVERT(varchar,startdate,101) as 'start date',
                CONVERT(varchar,enddate,101) as 'start date'
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE 1=1 '+ sWhere )


0
 
HainKurtSr. System AnalystCommented:
i dont see anything like "CONVERT(varchar,date,101) as date" above!
0
 
SharathData EngineerCommented:
I think the 2nd date is end date. check this.
EXEC( 'SELECT 
                Id,
                desc1,
                CONVERT(varchar,startdate,101) as [start date],
                CONVERT(varchar,enddate,101) as [end date]
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE 1=1 '+ @sWhere )

Open in new window

0
 
HainKurtSr. System AnalystCommented:
@sWhere does not have and in front so, this should work...
EXEC( 'SELECT 
                Id,
                desc1,
                CONVERT(varchar,startdate,101) as [start date],
                CONVERT(varchar,enddate,101) as [end date]
FROM
                table1 A join table2 B ON A.Id = B.Id
WHERE '+ @sWhere )

Open in new window

0
 
cimscimsAuthor Commented:
Thanks. It worked.
0

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