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Microsoft Access SQL Statement QUERY - Divison by Zero Error

Posted on 2013-01-28
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Last Modified: 2013-01-28
When I run this SQL Code Below in Access I get this error. "Division by Zero".  The Query that is giving me the error is in Bold.

Select SUM(Total-Tax) as [Sales], SUM(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies])) as [GPM]
 From HRO Where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#) And ([PAY_DATE] <= #1/26/2013 12:00:00 AM#) and [Status] = 'C'

Any suggestions?
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Question by:sj77
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14 Comments
 
LVL 6

Expert Comment

by:CaptainGiblets
ID: 38827601
either ([Total]-[Tax]-[T_Cost]-[P_Cost]) or ([Total]-[Tax]-[Supplies]) ends up with a value of 0, you then try to divide by it and its not possible, you cant divide by 0 which is why it is throwing the error.

You will either have to identify why it is pulling through 0 or put some code in to check if the fields are 0 before you try to divide by them.
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Expert Comment

by:MimicTech
ID: 38827632
check for zero.

select
 SUM(Total-Tax) as [Sales]
,iif(([Total]-[Tax]-[Supplies])<>0, SUM(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies]), 0) as [GPM]
from HRO
where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#)
     and ([PAY_DATE] <= #1/26/2013 12:00:00 AM#)
     and [Status] = 'C'
0
 

Author Comment

by:sj77
ID: 38827634
I understand but do you know if there is some way to do a CASE WHEN Statement?
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LVL 65

Expert Comment

by:Jim Horn
ID: 38827639
The standard way to deal with this scenario is...

If (denominator = 0, 0, numerator / denominator) as the_name

... so in your case  (air code, so don't shoot me) ...

SUM( IF ([Total]-[Tax]-[Supplies]) = 0, 0, [Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies])) as [GPM]

This also begs the question if your detail section should have three separate text boxes, one for the numerator, one for the denominator, and one for If (denominator = 0, 0, numerator / denominator) as the_name, then your footer can just sum the the_name columns.
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LVL 4

Expert Comment

by:MimicTech
ID: 38827642
sorry did not notice the SUM on GPM

you could:

select
 SUM(Total-Tax) as [Sales]
,SUM(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies])) as [GPM]
from HRO
where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#)
     and ([PAY_DATE] <= #1/26/2013 12:00:00 AM#)
     and [Status] = 'C'
having ([Total]-[Tax]-[Supplies]) <> 0
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LVL 65

Expert Comment

by:Jim Horn
ID: 38827645
<SQL Server version of above using CASE>

CASE WHEN denominator = 0 THEN 0 ELSE numerator / denominator END

btw, in both cases you'll have to handle any NULL values.
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Author Comment

by:sj77
ID: 38827650
Thanks,

MimicTech

select
 SUM(Total-Tax) as [Sales]
,iif(([Total]-[Tax]-[Supplies])<>0, SUM(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies]), 0) as [GPM]
from HRO
where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#)
     and ([PAY_DATE] <= #1/26/2013 12:00:00 AM#)
     and [Status] = 'C

Do you mean for that  "iif"
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LVL 4

Expert Comment

by:MimicTech
ID: 38827655
please disregard my second post - there is no grouping on this query -- use iif not having clause
0
 

Author Comment

by:sj77
ID: 38827685
MimicTech,

That helps but it eliminates some information which I am also Querying,

Count(RO_NO) as [Count]

How would you suggest that I include those 4 "RO_NO" that having ([Total]-[Tax]-[Supplies]) <> 0 eliminates?
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LVL 4

Expert Comment

by:MimicTech
ID: 38827723
sj77,

Please clarity the count question. I don't see the "RO_NO" in the initial question. Please repost query with that portion or let give more detail on what you would want added, and I might be able to help.
0
 

Author Comment

by:sj77
ID: 38827770
MimicTech,

I think I have a work around..

I will do the following:
Select
SUM(Total) as Total, Sum(Tax) as Tax, Sum(T_Cost) as T_Cost, Sum(P_Cost) as P_Cost, Sum(Supplies) as Supplies.  But I want to do the following in one line:

(Sum(Total) - Sum(Tax)-Sum(T_Cost)-Sum(P_Cost) / Sum(Total) - Sum(Tax) - Sum(Supplies)) as GRM

Please clean up and advise how I would do the above formula.
0
 
LVL 4

Expert Comment

by:MimicTech
ID: 38827849
would this work for you?

select
 Sum(Total) as Total
,Sum(Tax) as Tax
,Sum(T_Cost) as T_Cost
,Sum(P_Cost) as P_Cost,
,Sum(Total-Tax) as [Sales]

,Sum(iif(  ([Total]-[Tax]-[Supplies])<>0
             ,(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies]))
             ,0)
) as [GPM]

from HRO
where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#)
     and ([PAY_DATE] <= #1/26/2013 12:00:00 AM#)
     and [Status] = 'C
0
 

Author Comment

by:sj77
ID: 38827967
Error Message: Circular reference caused by alias 'Total' in query definition's SELECT list.

select
 Sum(Total) as Total,
Sum(Tax) as Tax,
Sum(T_Cost) as T_Cost,
Sum(P_Cost) as P_Cost,
Sum(Total-Tax) as [Sales] ,
Sum(iif(  ([Total]-[Tax]-[Supplies])<>0
             ,(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies]))
             ,0)
) as [GPM]

from HRO
where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#)
     and ([PAY_DATE] <= #1/26/2013 12:00:00 AM#)
     and [Status] = 'C'
0
 
LVL 4

Accepted Solution

by:
MimicTech earned 500 total points
ID: 38827985
Change alias names to not be the same as any real column name. Made names plural.

select
 Sum(Total) as Totals,
Sum(Tax) as Taxes,
Sum(T_Cost) as T_Costs,
Sum(P_Cost) as P_Costs,
Sum(Total-Tax) as [Sales] ,
Sum(iif(  ([Total]-[Tax]-[Supplies])<>0
             ,(([Total]-[Tax]-[T_Cost]-[P_Cost])/([Total]-[Tax]-[Supplies]))
             ,0)
) as [GPM]

from HRO
where ([PAY_DATE] >= #1/20/2013 12:00:00 AM#)
     and ([PAY_DATE] <= #1/26/2013 12:00:00 AM#)
     and [Status] = 'C'
0

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