Contrary of ISNULL() ?

Question

Contrary of ISNULL() ?

sascha-1062534

SSC Enthusiast

Points: 120
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September 3, 2009 at 5:03 am

#156171

Hello everyone,
how can I display something when a specific field value is not null ?
That of course wont work:
SELECT *, ISNOTNULL(Authordate,'Last Upload: ') + ISNULL(Authordate,'') From Documents
Any suggestions ?
Sascha

Viewing 5 posts - 1 through 4 (of 4 total)

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Gail Shaw SSC Guru Points: 1004504 More actions · Answer 1

SELECT < Column list >,

CASE WHEN AuthorDate IS NULL THEN '' ELSE 'Last Upload: ' + CONVERT(VARCHAR(30), AuthorDate, < Appropriate formatting code >) END

FROM Documents

Gail Shaw
Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

We walk in the dark places no others will enter
We stand on the bridge and no one may pass

justanewone Ten Centuries Points: 1363 More actions · Answer 2

Same principal different code provided CONCAT_NULL_YIELDS_NULL is ON.

SELECT ISNULL('Last Upload: ' + CONVERT(VARCHAR, AuthorDate+'', 112), '')

FROM Documents

Dave

sascha-1062534 SSC Enthusiast Points: 120 More actions · Answer 3

Thank you both for your fast help, justanewone i used your solution its works fine ! 🙂

Sascha

Jeff Moden SSC Guru Points: 1003851 More actions · Answer 4

how can I display something when a specific field value is not null ?

I see the examples of code folks gave you but they aren't really required. If the field is NOT null, it will display... no? Most systems will display a NULL as a blank and don't require a conversion to a blank or empty string. You'll save clock cycles in the process. 😉

--Jeff Moden

RBAR is pronounced "ree-bar" and is a "Modenism" for Row-By-Agonizing-Row.
First step towards the paradigm shift of writing Set Based code:
________Stop thinking about what you want to do to a ROW... think, instead, of what you want to do to a COLUMN.

Change is inevitable... Change for the better is not.

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