>I think the problem is "just" that for each variable, in each grouping
>set - a very large number in a large cube - we're recursing through the
>whole ChainAggregate tree, as each Var just points to a var one level
>lower.
For small values of very large, that is. Had a little thinko there. Its still fault of recursing down all these levels,
doingnontrivial work each time.
--
Please excuse brevity and formatting - I am writing this on my mobile phone.
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
