I'm getting a divide by zero from the following select statement.  The values 
for tothrs and activity.standard are all positive real numbers, no zeros or 
nulls.  Does anyone have a clue as to why I'm getting this error.           
Somehow tothrs/activity.standard is evaluating to 0 as shown below.

Select 
t3t.*,activity.activity,activity.unitmeas,activity.standard,(tothrs/activity.standard)
 AS standardunits,(units/(tothrs/activity.standard)*100) AS expectedunits FROM  
t3t, activity WHERE t3t.activity EQ activity.activity and activity.standard <> 0
                Tothrs   Units     Activity UnitMEas            Standard        
      StandardUnits
          1.5           1.5           033          Manh                       1 
                                             0
          2              2              032          Manh                       
1                                              0
          6.5           6.5           941          Manh                       1 
                                             0
          4              4              520          Unit                       
  0.83                                         0
          6              11            520          Unit                        
 0.83                                         0
          10            20            520          Unit                         
0.83                                         0
          3              3              028          Manh                       
1                                              0
          5              130           526         LnFt                         
0.25                                         0
          10            14            520          Unit                         
0.83                                         0


Dennis Hodges
Maintenance Management Manager
FDOT Office of Maintenance MS #52
PH: (850) 410-5635
FAX: (850) 410-5511
[email protected]<mailto:[email protected]>

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