using case when condition in WHERE in SP

Question

using case when condition in WHERE in SP

ssurekha2000

SSCommitted

Points: 1860
More actions
September 27, 2013 at 11:41 pm

#277591

i have a SP with where condition
as where id=@id and month=@month and Eid=@Eid
wht i need is if @Eid=0 i need to display all the reocrds
if Eid>0 then display only that particular reocrd
i tried
where id=@id and month=@month and Eid=
case when @Eid=0 then Eid>0
else
Eid=@Eid
End
but its giving me error
Incorrect syntax near '>'.

Viewing 8 posts - 1 through 7 (of 7 total)

You must be logged in to reply to this topic. Login to reply

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 1

ssurekha2000 (9/27/2013)
i have a SP with where condition
as where id=@id and month=@month and Eid=@Eid
wht i need is if @Eid=0 i need to display all the reocrds
if Eid>0 then display only that particular reocrd
i tried
where id=@id and month=@month and Eid=
case when @Eid=0 then Eid>0
else
Eid=@Eid
End
but its giving me error
Incorrect syntax near '>'.

You mean something like this?

...

where

id = @id and

month = @month and

((@Eid = 0) or (Eid = @Eid))

ParulPrabu SSCrazy Points: 2271 More actions · Answer 2

Hi,

Try with this code

where id=@id and month=@month and Eid=

case when @Eid=0 then case when Eid>0 then Eid else 0 end else @Eid end =Eid

ssurekha2000 SSCommitted Points: 1860 More actions · Answer 3

ssurekha2000

SSCommitted

Points: 1860

September 30, 2013 at 6:23 am

#1654510

getting incorect syntax near =

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 4

ssurekha2000 (9/30/2013)
getting incorect syntax near =

Have you tried what I posted earlier?

ChrisM@Work SSC Guru Points: 186127 More actions · Answer 5

parulprabu (9/30/2013)
Hi,
Try with this code
where id=@id and month=@month and Eid=
case when @Eid=0 then case when Eid>0 then Eid else 0 end else @Eid end =Eid

There's a syntax error and a pointless logical check in this code. Can you identify them, parulprabu?

^{“Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw}

For fast, accurate and documented assistance in answering your questions, please read this article.
Understanding and using APPLY, (I) and (II) Paul White
Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

ParulPrabu SSCrazy Points: 2271 More actions · Answer 6

parulprabu (9/30/2013)
Hi,
Try with this code
where id=@id and month=@month and Eid=
case when @Eid=0 then case when Eid>0 then Eid else 0 end else @Eid end =Eid

Sorry for the erroneous solution given. This is the correct one

[Code="sql"]

where id=@id and month=@month and Eid=

(case when @Eid=0 then case when Eid>0 then Eid else 0 end else @Eid end)

[/code]

Lynn Pettis SSC Guru Points: 442467 More actions · Answer 7

I really hate to rain on everyone's parade but it isn't necessary to use a CASE to accomplish what is asked.

Please look at the solution I posted in my original response.