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Using function in a case statement

Posted on 2011-03-04
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Last Modified: 2012-05-11
This is SQL 2000

I have a function and below works. But now I want to put it in a case statement. I get an error that there's a syntax error near THEN..

--This works
if  dateadd(dd,0,datediff(dd,0,dbo.fnExpectedShipDate('2011-02-18 15:45:00.000','FX','UPSGND','HI'))) <= DATEADD(dd, 0, DATEDIFF(dd, 0, getdate()))
   
Begin

 print 'y'

End
else
begin
 print 'n'
end
---How can i use it in CASE

SELECT MIN(sm.Description1) AS Item, o.order_id,
	       od.sku AS SKU,
	       SUM(original_qty) AS Need,
	       MAX(
	           CASE 
	                WHEN o.Carrier IN ('UPSNDS', 'UPSNDA') THEN 
	                     'Y'
	                ELSE 'N'
	           END
	       ) AS AIR,
	       MAX(CASE WHEN o.Carrier = 'USPSPRI' THEN 'Y' ELSE 'N' END) AS 
	       USPS,
           ---**** here    
           case when ( dateadd(dd,0,datediff(dd,0,dbo.fnExpectedShipDate(o.PO_Date,'FX','UPSGND','HI')))
                              <= DATEADD(dd, 0, DATEDIFF(dd, 0, getdate())) THEN 'Y' else 'N' end) as Test,

	       MAX(CASE WHEN o.PO_Date <= @CUTOFF THEN 'Y' ELSE 'N' END) AS Today,
	       MAX(rq.Wave) AS Wave

	FROM .....

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Question by:Camillia
8 Comments
 
LVL 18

Accepted Solution

by:
Cluskitt earned 500 total points
ID: 35037651
You're doing this:

CASE WHEN (conditions THEN true ELSE false)
You need to do this:

CASE WHEN (conditions) THEN true ELSE false

So, this should work:
case when (dateadd(dd,0,datediff(dd,0,dbo.fnExpectedShipDate(o.PO_Date,'FX','UPSGND','HI')))
                              <= DATEADD(dd, 0, DATEDIFF(dd, 0, getdate()))) THEN 'Y' else 'N' end as Test
0
 
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Expert Comment

by:Cluskitt
ID: 35037656
That is, assuming your conditions are correctly stated.
0
 
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Expert Comment

by:sjklein42
ID: 35037671
If you put the first "CASE" all on one line, does it work?

MAX(CASE WHEN o.Carrier IN ('UPSNDS', 'UPSNDA') THEN 'Y' ELSE 'N' END) AS AIR,

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Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

 
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Expert Comment

by:Amgad_Consulting_Co
ID: 35037681
can you try this:-

  case when ( dateadd(dd,0,datediff(dd,0,dbo.fnExpectedShipDate(o.PO_Date,'FX','UPSGND','HI')))
                              <= DATEADD(dd, 0, DATEDIFF(dd, 0, getdate()))  )THEN 'Y' else 'N' end as Test
0
 
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Expert Comment

by:Cluskitt
ID: 35037732
I'm not sure what you're trying to say doesn't work. If it's the MAX(CASE) functions, then there's no reason not to work. Basically, if all records contain 'N' it will return 'N', otherwise it will return 'Y' (even if there's only one 'Y').
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Author Comment

by:Camillia
ID: 35037811
Actually, this worked (i removed the paranthsis before "dateadd")

OLD: I removed that paranthiss
case when ( dateadd(dd,0,datediff(dd,0,dbo.fnExpectedShipDate(o.PO_Date,'FX','UPSGND','HI')))
                              <= DATEADD(dd, 0, DATEDIFF(dd, 0, getdate())) THEN 'Y' else 'N' end) as Test,



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Author Comment

by:Camillia
ID: 35037824
I think Cluskitt is correct in his first post...
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Expert Comment

by:ewangoya
ID: 35037868
change to

SELECT MIN(sm.Description1) AS Item, o.order_id,
	       od.sku AS SKU,
	       SUM(original_qty) AS Need,
	       MAX(
	           CASE 
	                WHEN o.Carrier IN ('UPSNDS', 'UPSNDA') THEN 
	                     'Y'
	                ELSE 'N'
	           END
	       ) AS AIR,
	       MAX(CASE WHEN o.Carrier = 'USPSPRI' THEN 'Y' ELSE 'N' END) AS 
	       USPS,
           ---**** here 
when dateadd(dd,0,datediff(dd,0,dbo.fnExpectedShipDate(o.PO_Date,'FX','UPSGND','HI')))<= DATEADD(dd, 0, DATEDIFF(dd, 0, getdate())) then 'Y' else 'N' end,
MAX(CASE WHEN o.PO_Date <= @CUTOFF THEN 'Y' ELSE 'N' END) AS Today,
	       MAX(rq.Wave) AS Wave

	FROM .....

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Best Practices: Disaster Recovery Testing

Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.

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