Hi,
On Thu, Oct 07, 2004 at 06:54:15PM -0400, Bruce Momjian wrote:
> > I'd like to know if there are any plans on introducing bitmap indexes
> > into postgresql. I think this could mean a big performance improvement
> > especially for datawarehousing applications. I know that there is an
> > index type hash but I don't know how both types are comparable due to
> > they are both best usable for equality expressions.
>
> Lots of people have talked about it but I don't know anyone coding it.
have you ever discussed if bitmap indexes lead to better query
performance than hash indexes will do?
Regards,
Yann
---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match
