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Home/ Questions/Q 804257
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Editorial Team
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Editorial Team
Asked: May 14, 20262026-05-14T23:53:22+00:00 2026-05-14T23:53:22+00:00

Greetings, I would like to include CASE Statement inside my where statement as follows:

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Greetings,
I would like to include CASE Statement inside my where statement as follows:

SELECT a1.ROWGUID FROM Table1 a1
INNER JOIN Table2 a2 on a1.ROWGUID=a2.Table1ROWGUID
WHERE a1.Title='title' 
AND (CASE WHEN @variable is not null THEN a1.ROWGUID in (SELECT * FROM #TempTable))

However, this ‘CASE’ statement does not work inside ‘WHERE’ statement.
How can I do it correct?

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  1. Editorial Team
    Editorial Team
    2026-05-14T23:53:23+00:00Added an answer on May 14, 2026 at 11:53 pm

    You are missing END and possibly also an ELSE:

    (CASE WHEN @variable is not null THEN a1.ROWGUID ELSE ... END)
    
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