case statement insql

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SQL-Server-2008

SQL

Declare @AuditDBName Varchar(50),@sQuery Varchar(Max)
   <big> Select @AuditDBName = ConfigStringValue  FROM [dbo].[Common_SystemConfig]  WHERE ConfigKey= 'CMS_AUDIT_DB'

-- This is my db name

SQL

CASE WHEN EXISTS (SELECT 1 FROM #TempClosedWorkItemReportTagIDForOMMAEvictionWB WHERE CaseNumber = CC.CaseNumber AND ReportTagID IN (160))
                THEN
                    Select @sQuery='SELECT SUBSTRING((SELECT '','' + s.CaseStatus FROM '+@AuditDBName+'.[dbo].[Audit_Common_Case] s where CaseNumber=CC.CaseNumber FOR XML PATH('''')),2,200000)' AS [CaseStatusToolTip]
                END

I want to pass my db name in the below query

Posted 17-Oct-13 20:00pm

Member 9991522

Updated 17-Oct-13 20:36pm

coded007

v2

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Khandwawala Hatim 18-Oct-13 2:12am

what problem you are facing in this

Member 9991522 18-Oct-13 2:17am

i am not able to pass the @auditDbName in the below qury

Khandwawala Hatim 18-Oct-13 2:27am

what error is it throwing?

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OriginalGriff · Accepted Answer · 2013-10-17T20:36:00

Solution 1

You can't do it like that: the dB name is parsed at an earlier stage of SQL command processing, and it won't accept a variable as a dB name.
You can do it, but you need to assemble a string version and then use EXEC instead to execute the string.

Posted 17-Oct-13 20:36pm

OriginalGriff