>Has anyone come across these commands that return different results with the same query condition
>
>CODE SECTION
>-----------------
>rdates(1) = a date defined by the user
>rdates(2) = calculated date based on a rule - which is always the lesser of the two dates
>
>* sum the values between these dates
>CALCULATE SUM(hrs_driving+hrs_onduty) TO Results(1) ;
> FOR logs.employee_code = THISFORM.EMPLOYEE_CODE1.Text1.VALUE ;
> AND BETWEEN(logs.txdate,rdates(2),rdates(1))
>
>* sum the values between these dates
>SELECT SUM(hrs_driving+hrs_onduty) AS 'results1' ;
> FROM logs!logs INTO CURSOR 'test1' ;
> WHERE logs.employee_code = THISFORM.EMPLOYEE_CODE1.Text1.VALUE ;
> AND BETWEEN(logs.txdate,rdates(2),rdates(1))
>-----------------
>The results are :
> Calculate sum() = 73.5
> SQL sum() = 63.00
>
>IF ANY ONE CAN SPOT THE PROBLEM PLEASE LET ME KNOW...

Calculate Sum works with updated data while SQL Select works with data directly from the disk. In SQL Select, its reference is not from your currently opened table, so whatever current changes you have couldn't be included in the resultset.

I also noticed that your SQL Select don't have a GROUP BY which is required to come up with supposedly the same result.