Re: Multi-column index not used, new flipped column index is

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
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