Markus Schaber <schabi@logix-tt.com> schrieb:
> Bitmap Index Scans can be your solution, but AFAIK they were invented in
> 8.1.
Right.
>
> For bitmap index scans, you have one index on fkColumnOne and one on
> fkColumnTwo, and the query planner knows to combine them when both
> columns are given in a WHERE clause.
Yeah! The Bitmap Index Scan is a great thing. With some selects i have a
performance-boost from 5 to 10, compared with 8.0.
Andreas
--
Really, I'm not out to destroy Microsoft. That will just be a completely
unintentional side effect. (Linus Torvalds)
"If I was god, I would recompile penguin with --enable-fly." (unknow)
Kaufbach, Saxony, Germany, Europe. N 51.05082°, E 13.56889°