Divide by zero error encountered

Posted on 2006-07-06
Last Modified: 2011-10-03
Working on an Access ADP with SQL backend.  I've got this one Function that keeps giving me this error. "Divide by zero error encountered".  This is the statement it gives me this error at:

CASE WHEN [todayconcpoured] > 0 THEN ((([todayconcpoured] / [todaytightconc]) - 1) * 100) ELSE 0 END

Both fields have 0's instead of nulls.  
I have been researching this on EE and I have tried with no success :

CASE WHEN [todayconcpoured] > 0 THEN ((([todayconcpoured] / CASE WHEN [todaytightconc] IS NULL THEN 0 ELSE [todaytightconc] END) - 1) * 100) ELSE 0 END

Can someone help me with this please?
Question by:SCS1ST
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LVL 23

Expert Comment

ID: 17050845
CASE WHEN [todayconcpoured] > 0 AND [todayconcpoured] IS NOT NULL THEN

try that
LVL 143

Accepted Solution

Guy Hengel [angelIII / a3] earned 500 total points
ID: 17050851
this should work better:
  WHEN [todayconcpoured] IS NULL OR [todaytightconc] IS NULL THEN 0
  WHEN [todaytightconc] > 0 THEN ((([todayconcpoured] / [todaytightconc]) - 1) * 100)

Author Comment

ID: 17050973

Worked beautifully, thanks.

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