18 Feb
2010
18 Feb
'10
6:54 p.m.
Op 18-02-10 19:44, Stefan Manegold schreef:
because it is built on an intermediate result (base BAT plus delta BATs applied) that is gone, again after the query has been executed.
I really feel I have learnt something now :) thanks :) Given this information, is there a way to get the cost function to be optimised? Either by taking reuse in account, or otherwise by the modifying the size? (Or more futuristic, storing the choice and the performance.) Stefan