Andrew Overholt did some work on SQL99 recursive queries, but went back to university without having gotten to the point where it actually worked. One of the many things on my to-do list is to pick up and finish Andrew's work on this. If someone has time to work on it, let me know and I'll try to get what he had over to you.
There is a website somewhere where a guy posts his patch he is maintaining that does it. I'll try to find it...
Chris
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