-- int4 check CREATE TABLE int4tmp (a int4); \copy int4tmp from 'data/int2.data' SET enable_seqscan=on; SELECT count(*) FROM int4tmp WHERE a < 237; SELECT count(*) FROM int4tmp WHERE a <= 237; SELECT count(*) FROM int4tmp WHERE a = 237; SELECT count(*) FROM int4tmp WHERE a >= 237; SELECT count(*) FROM int4tmp WHERE a > 237; SELECT a, a <-> '237' FROM int4tmp ORDER BY a <-> '237' LIMIT 3; CREATE INDEX int4idx ON int4tmp USING gist ( a ); SET enable_seqscan=off; SELECT count(*) FROM int4tmp WHERE a < 237::int4; SELECT count(*) FROM int4tmp WHERE a <= 237::int4; SELECT count(*) FROM int4tmp WHERE a = 237::int4; SELECT count(*) FROM int4tmp WHERE a >= 237::int4; SELECT count(*) FROM int4tmp WHERE a > 237::int4; EXPLAIN (COSTS OFF) SELECT a, a <-> '237' FROM int4tmp ORDER BY a <-> '237' LIMIT 3; SELECT a, a <-> '237' FROM int4tmp ORDER BY a <-> '237' LIMIT 3;