Greg, if you're still in bitmap indices you may take a look on our contrib/intarray module.
Regards, Oleg On 13 Mar 2002, Greg Copeland wrote: > One of the reasons why I originally stated following the hackers list is > because I wanted to implement bitmap indexes. I found in the archives, > the follow link, http://www.it.iitb.ernet.in/~rvijay/dbms/proj/, which > was extracted from this, > >http://groups.google.com/groups?hl=en&threadm=01C0EF67.5105D2E0.mascarm%40mascari.com&rnum=1&prev=/groups%3Fq%3Dbitmap%2Bindex%2Bgroup:comp.databases.postgresql.hackers%26hl%3Den%26selm%3D01C0EF67.5105D2E0.mascarm%2540mascari.com%26rnum%3D1, > archive thread. > > At any rate, that was some number of months ago. I've started looking > at the results posted from their bitmap GiST efforts and found that they > were being tested rather poorly to be of real value (I also found it > annoying that the project seems to quote other people's work without > giving credit). Nonetheless, I thought I'd post to find out if anyone > feels there is still a need for this? That is, I'm not really sure that > data warehousing or DDS systems are currently very common with Postgres. > > If the group here still see value in adding various types of bitmap > support, can someone please point me to some documentation. I had > several bookmarked but lost then when X crashed. Anything that outlines > cache strategy, index support, am overview, and any other documentation > that would help excel my understanding of the code as well as the > various structure relationships would be wonderful? > > Oh yes, one last question, is the required method for adding index > support via GiST? I ask because it seems to me that inserts could be > exceptionally expensive, though as usual, I still have more to look at. > > Thanks, > Greg > > > P.S. And yes, I have been reading lots of code...including > walk-throughs! :P > > > ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org