btree-gist is a B-Tree implementation using GiST that supports the int2, int4, int8, float4, float8 timestamp with/without time zone, time with/without time zone, date, interval, oid, money, macaddr, char, varchar/text, bytea, numeric, bit, varbit and inet/cidr types. CREATE TABLE test (a int4); -- create index CREATE INDEX testidx ON test USING gist (a); -- query SELECT * FROM test WHERE a < 10; All work was done by Teodor Sigaev (teodor@stack.net) , Oleg Bartunov (oleg@sai.msu.su), Janko Richter (jankorichter@yahoo.de). See for additional information.