ginanjar wrote: > I work on my thesis on spatial database indeksing using Btree n GiST. > Can you help to explain how the GiST and btree indexing work in > postgresql ( the algorithm ) ? Can somone show me how to write code to > know the tree level and count the root and leaf ? > thanks for the information n help . I'm not sure btree indexes are useful in a spatial database (well, not for the spatial aspects unless you are dealing with 1D space). For GiST, read chapter 51 of the manuals. http://www.postgresql.org/docs/8.4/static/gist.html >From there, study some of the contrib modules it mentions in the source distribution. HTH -- Richard Huxton Archonet Ltd -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
