Note that this message/problem I experience is with VFP 6 (because I don't know if it works differently in VFP 9)
I have the following SQL Select (simplified)
select MYTABLE1.FIELD1 as GROUP_ID, ;
COUNT(DISTINCT(MYTABLE1.ORDER_NO)) as NUM_ORDS, ;
nvl(SUM(CHILD1.NUM_FIELD1),0) AS TOT_NUM1, ;
nvl(SUM(CHILD2.NUM_FIELD2*CHILD2.NUM_FIELD3),0) as TOT_NUM2, ;
from MYTABLE1 ;
LEFT JOIN CHILD1 ON MYTABLE1.ORDER_NO = CHILD1.ORDER_NO ;
LEFT JOIN CHILD2 on MYTABLE1.ORDER_NO = CHILD2.ORDER_NO ;
where MYTABLE1.ORD_DATE >= ctod("01/01/2002") and MYTABLE1.ORD_DATE <= ctod("12/31/2002")
group by GROUP_IDThe problem is that depending on the order of LEFT JOIN CHILD1 and LEFT JOIN CHILD2 I get asterisk (*) in either field TOT_NUM1 or TOT_NUM2.
Can someone explain why it works that way and possibly how to avoid it?
Thank you.
"The creative process is nothing but a series of crises." Isaac Bashevis Singer
"My experience is that as soon as people are old enough to know better, they don't know anything at all." Oscar Wilde
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