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Why these two commands will give different results
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To
04/12/2006 09:40:34
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Environment versions
Visual FoxPro:
VFP 8 SP1
OS:
Windows XP
Database:
Visual FoxPro
Miscellaneous
Thread ID:
01174441
Message ID:
01174629
Views:
9
>>
>>SELECT SUM(rate*SHARE/10000) AS crate WHERE inv_no+salesman = m.ccinv + m.Slsman ;
>>	                FROM comision INTO ARRAY laArr
>>
>>SUM (rate*SHARE/10000) TO cRate WHILE inv_no+salesman = m.ccinv + m.Slsman
>>
>>
>
>Aside from the string matching, there are two potential issues here:
>
>1) WHERE looks at the entire table; WHILE starts at the current record and stops as soon as there's a mismatch.
>
>2) SELECT SUM() ignores Nulls. SUM does not.
>
>Tamar

Without seek before select SUM I got the following results
Found a mismatch on I801972COL cRate = 0 laArr[1]= 0.100000000
Found a mismatch on I518767COL cRate = 0 laArr[1]= 0.100000000

The first invoice has a different person as a salesman, and the second doesn't exist in Comision at all (I just tried in Command window to search for these invoices).

The array is defined as local at the top of the procedure.
If it's not broken, fix it until it is.


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