Nesting Case statement in SQL

I am tring to write a case statement where if today's date is between the InitDate and Stop Date field value = 1.

Some of my records have a StopDate with a 'NULL' value and some have a date.

Here is my code:

CASE WHEN dbo.NurInterventionOccurrences.InitDateTime <= getdate()
                      AND dbo.NurInterventionOccurrences.StopDateTime IS NULL THEN 1 ELSE

CASE WHEN dbo.NurInterventionOccurrences.InitDateTime <= getdate()
                      AND dbo.NurInterventionOccurrences.StopDateTime > getdate() then 1 else

0 END AS Cnt


There is something wrong with the syntax.

Can someone help me out?

Thanks

glen
GPSPOWAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Jim HornMicrosoft SQL Server Developer, Architect, and AuthorCommented:
Give this a whirl (btw there was another END missing) ..
 -- Better to calculate it once here then 1000's of times in a query
Declare @dt datetime = GETDATE()  

SELECT blah, blah, blah, 
CASE 
   WHEN InitDateTime <= @dt AND StopDateTime IS NULL THEN 1 
   ELSE
      CASE 
         WHEN InitDateTime <= @dt THEN 1
         ELSE 0 END 
   END as Cnt

Open in new window

btw I have an article called SQL Server CASE Solutions, and in the middle there's a demo of nested CASE blocks.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Scott PletcherSenior DBACommented:
I think the way you described it -- "if today's date is between the InitDate and Stop Date field value = 1" -- is clearer than your existing code.  Thus, I changed the code to match the description, while simplifying the code:

CASE WHEN getdate() >= dbo.NurInterventionOccurrences.InitDateTime AND
                      getdate() < ISNULL(dbo.NurInterventionOccurrences.StopDateTime, '20790601') then 1 else 0 END AS Cnt

Btw, GETDATE() will only be evaluated once in any given SELECT statement.
0
GPSPOWAuthor Commented:
Thanks
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.