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Why these two commands will give different results
Message
From
04/12/2006 14:28:23
Mike Yearwood
Toronto, Ontario, Canada
 
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:
01174705
Views:
11
Naomi

There is no need to set order before a SQL-Select. In fact, SQL-Select reopens the cursors and does things it's own way. You're not helping it at all. In fact, doing the set order is wasting time.

The xBase SUM WHILE line is not an exact replacement for the SQL-Select line.

>
>SELECT Comision
>				lnRecno = RECNO()
>                SET ORDER TO com_inv IN comision
>
>                SELECT SUM(rate*SHARE/10000) AS crate WHERE inv_no+salesman = m.ccinv + m.Slsman ;
>                	FROM comision INTO ARRAY laArr
>                lcRate = EVL(laArr[1],0)		
>                IF SEEK(m.ccinv + m.Slsman)                	
>					SUM (rate*SHARE/10000) TO cRate WHILE inv_no+salesman = m.ccinv + m.Slsman
>				ELSE
>					cRate = 0
>				endif		
>                	
>                	IF NOT m.cRate == m.lcRate
>                		=MESSAGEBOX("Found a mismatch on " + m.ccinv + m.Slsman)
>                		_cliptext = _cliptext + "Found a mismatch on " + m.ccinv + m.Slsman + " cRate = " + ;
>                		         	TRANSFORM(m.cRate)  + " laArr[1]= " + TRANSFORM(m.lcRate)
>                	ENDIF
>
>The two reported mismtach cases are wrong, since in first case the invoice is for different person and in second it doesn't exist. I just re-indexed the table on inv_no + salesman and the problem persists.
>
>Do you know, what I'm doing wrong?
>
>Thanks again.
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