* Tom Lane <[EMAIL PROTECTED]> [29.01.2005 18:24]: > "Victor Y. Yegorov" <[EMAIL PROTECTED]> writes: > > I remember, Tom Lane suggested on-disk bitmaps > > I have suggested no such thing, and in fact believe that the sort of > index structure you are proposing would be of very little use.
Why? I thought they would be useful for data warehouse databases. Maybe I said something "the wrong way", but what I'm trying to implement is exactly what is said about in the first link you've posted below: http://archives.postgresql.org/pgsql-hackers/2004-10/msg00439.php Or am I misunderstanding the point? > What I've been hoping to look into is *in memory* bitmaps used as an > interface between index scans and the subsequent heap lookups. Sorry, that was what I've been speaking of. Anyway, bitmap indexes API could be used for in-memory bitmaps you're speaking of. -- Victor Y. Yegorov ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
