CODEWITHSUNDEEP
sqlsql-server-2008operatorscaseor-operator
Matt
Matt

Reputation: 273

OR Operator in THEN section of CASE statement

I have the following SQL CASE statement. I would like to include NULL values as part of the 'SENNo' condition: 

SEN = CASE --SEN
    WHEN @Subgroup = 'SENA' THEN 'A'
    WHEN @Subgroup = 'SENP' THEN 'P'
    WHEN @Subgroup = 'SENS' THEN 'S'
    WHEN @Subgroup = 'SENNo' THEN 'N'
END

So I would like it to effectively do the following:

SEN = CASE --SEN
    WHEN @Subgroup = 'SENA' THEN 'A'
    WHEN @Subgroup = 'SENP' THEN 'P'
    WHEN @Subgroup = 'SENS' THEN 'S'
    WHEN @Subgroup = 'SENNo' THEN 'N' OR NULL
END

This doesn't work, but I'm not sure how to structure my logic.

EDIT: Here's the solution after jparask's suggestion set me on the right track:

           ISNULL(SEN, 'N') = CASE --SEN
                   WHEN @Subgroup2 = 'SENA' THEN 'A'
                   WHEN @Subgroup2 = 'SENP' THEN 'P'
                   WHEN @Subgroup2 = 'SENS' THEN 'S'
                   WHEN @Subgroup2 = 'SENNo' THEN 'N'
               END

Upvotes: 0

Views: 64

Answers (1)

Giannis Paraskevopoulos
Giannis Paraskevopoulos

Reputation: 18411

SEN = CASE --SEN
    WHEN @Subgroup = 'SENA' THEN 'A'
    WHEN @Subgroup = 'SENP' THEN 'P'
    WHEN @Subgroup = 'SENS' THEN 'S'
    WHEN ISNULL(@Subgroup,'SENNo') = 'SENNo' THEN 'N' 
END

or

SEN = CASE --SEN
    WHEN @Subgroup = 'SENA' THEN 'A'
    WHEN @Subgroup = 'SENP' THEN 'P'
    WHEN @Subgroup = 'SENS' THEN 'S'
    WHEN @Subgroup IS NULL OR @Subgroup = 'SENNo' THEN 'N' 
END

Upvotes: 2

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