ISERROR Function

Question

Post reply

ISERROR Function

carl.meads

Mr or Mrs. 500

Points: 519
More actions
November 14, 2011 at 3:41 am

#246056

I have the following
SELECT #callhandling2.client
,#callhandling2.daycat+' '+#callhandling2.timecat as [Category]
,Sum(#callhandling2.calls) as [Total Calls]
,[Calls Per 30 Mins] = Case
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekend 20:00-08:00' then if(iserror(Sum(#callhandling2.calls)/2208.0)),0,Sum(#callhandling2.calls)/2208.0
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekend 08:00-20:00' then Sum(#callhandling2.calls)/2208.0
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekday 20:00-08:00' then Sum(#callhandling2.calls)/5304.0
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekday 08:00-20:00' then Sum(#callhandling2.calls)/5304.0
Else 'I dont know'
End
But have a problem with the if(iserror) bit of my case statement.
Basically I want to say if there is a division by 0 error then NA or something similar

Viewing 3 posts - 1 through 3 (of 3 total)

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

Devendrakumar SSC-Forever Points: 42493 More actions · Answer 1

Basically I want to say if there is a division by 0 error then NA or something similar

Check it before you Divide By Zero (0).

Something like this:

CASE

WHEN B = 0 THEN 'NA'

ELSE A / B

END

Cadavre SSC-Forever Points: 41690 More actions · Answer 2

carl.meads (11/14/2011)
I have the following
SELECT #callhandling2.client
,#callhandling2.daycat+' '+#callhandling2.timecat as [Category]
,Sum(#callhandling2.calls) as [Total Calls]
,[Calls Per 30 Mins] = Case
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekend 20:00-08:00' then if(iserror(Sum(#callhandling2.calls)/2208.0)),0,Sum(#callhandling2.calls)/2208.0
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekend 08:00-20:00' then Sum(#callhandling2.calls)/2208.0
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekday 20:00-08:00' then Sum(#callhandling2.calls)/5304.0
When #callhandling2.daycat+' '+#callhandling2.timecat='Weekday 08:00-20:00' then Sum(#callhandling2.calls)/5304.0
Else 'I dont know'
End
But have a problem with the if(iserror) bit of my case statement.
Basically I want to say if there is a division by 0 error then NA or something similar

This looks like an Access query rather than a SQL query, is it?

Try something like this: -

SELECT #callhandling2.client

,#callhandling2.daycat + ' ' + #callhandling2.timecat AS [Category]

,SUM(#callhandling2.calls) AS [Total Calls]

,[Calls Per 30 Mins] = (CASE WHEN #callhandling2.calls = 0

THEN 'N/A'

ELSE (CASE WHEN #callhandling2.daycat + ' ' + #callhandling2.timecat = 'Weekend 20:00-08:00'

THEN #callhandling2.calls / 2208.0

WHEN #callhandling2.daycat + ' ' + #callhandling2.timecat = 'Weekend 08:00-20:00'

THEN #callhandling2.calls / 2208.0

WHEN #callhandling2.daycat + ' ' + #callhandling2.timecat = 'Weekday 20:00-08:00'

THEN #callhandling2.calls / 5304.0

WHEN #callhandling2.daycat + ' ' + #callhandling2.timecat = 'Weekday 08:00-20:00'

THEN #callhandling2.calls / 5304.0

ELSE 'I dont know' END )

END)

Forever trying to learn
My blog - http://www.cadavre.co.uk/
For better, quicker answers on T-SQL questions, click on the following...http://www.sqlservercentral.com/articles/Best+Practices/61537/
For better, quicker answers on SQL Server performance related questions, click on the following...http://www.sqlservercentral.com/articles/SQLServerCentral/66909/