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CASE Statment Help

  • November 13, 2013 at 10:40 am

    #280193

    This may be a simple one for you guys, but I just don't know the correct syntax.

    I have the following CASE statement:

    CASE WHEN ModifiedDate > DateClosed THEN 1 ELSE 0 END as FieldName

    The ClosedDate field sometimes is NULL and the modifieddate field has value. I will get a false 1 since the modifieddate will always be larger than the ClosedField that has a NULL.

    How can I tell it when the DateClosed field is not null?

    Thanks.

    Hope that made sense.

    UPDATE: Never mind, I was able to make it work.

  • November 13, 2013 at 12:06 pm

    #1666184

    What approach did you take?

    My option would be something like this:

    CASE WHEN ModifiedDate > ISNULL( DateClosed, 0) THEN 1 ELSE 0 END as FieldName

    Luis C.
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  • November 13, 2013 at 2:09 pm

    #1666208

    DarthBurrito (11/13/2013)

    I will get a false 1 since the modifieddate will always be larger than the ClosedField that has a NULL.

    How can I tell it when the DateClosed field is not null?

    No, you won't. The condition won't be "true" if the column is NULL, so you will get a 0 result. (If the column is NULL, the condition result will also be "NULL", which is not "true".

    SQL DBA,SQL Server MVP(07, 08, 09) "It's a dog-eat-dog world, and I'm wearing Milk-Bone underwear." "Norm", on "Cheers". Also from "Cheers", from "Carla": "You need to know 3 things about Tortelli men: Tortelli men draw women like flies; Tortelli men treat women like flies; Tortelli men's brains are in their flies".

  • November 13, 2013 at 2:21 pm

    #1666212

    Hi what was Your solution? It would be good if you can share one.

    I may have similar situation in future.

    Thanks

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