> I think we still have a serious problem with multicolumn indexes. As they
> stand they're basically only indexes on the first column. The later columns
> are not used to determine page splits.
1. In your meaning, btree has bad split algorithm too. Look at _bt_compare, if
first keys on page are unique the the later keys will not be compared ;)
2. About rtree interface: it's possible to write GiST-RTree layer compatibility
interface. User's interface will just copied from RTree, and layer will
translate it to GiST interface.
--
Teodor Sigaev E-mail: teodor@sigaev.ru
WWW: http://www.sigaev.ru/