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Posted by octangle on 06/07/06 20:24
Alexander Kuznetsov wrote:
> 1. If negative transactions are possible, than my query is incorrect.
> 2. You probably need a much larger set of test data to test different
> approaches against. Also I would say there are at lest 2 possible
> situations:
> - most transactions are already negated.
> - most transactions have not been negated yet.
> In some cases in different situations different queries are the best. I
> would try both and see if one and the same query is the best.
>
> Good luck!
FYI
The normal situation would be that most transactions are not negated in
this table. Negation would only occur if the billing system was
un-doing a billing run for some technical or business reason...
Therefore negating transactions would be rare, theoretically...
I appreciate the notion of getting better test data - this will
naturally accrue as I implement and test this soultion. I will make
sure to compare performance as this project matures...
Thanks again...!
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