-- float8 check CREATE TABLE float8tmp (a float8); \copy float8tmp from 'data/float8.data' SET enable_seqscan=on; SELECT count(*) FROM float8tmp WHERE a < -1890.0; count ------- 237 (1 row) SELECT count(*) FROM float8tmp WHERE a <= -1890.0; count ------- 238 (1 row) SELECT count(*) FROM float8tmp WHERE a = -1890.0; count ------- 1 (1 row) SELECT count(*) FROM float8tmp WHERE a >= -1890.0; count ------- 307 (1 row) SELECT count(*) FROM float8tmp WHERE a > -1890.0; count ------- 306 (1 row) CREATE INDEX float8idx ON float8tmp USING gist ( a ); SET enable_seqscan=off; SELECT count(*) FROM float8tmp WHERE a < -1890.0::float8; count ------- 237 (1 row) SELECT count(*) FROM float8tmp WHERE a <= -1890.0::float8; count ------- 238 (1 row) SELECT count(*) FROM float8tmp WHERE a = -1890.0::float8; count ------- 1 (1 row) SELECT count(*) FROM float8tmp WHERE a >= -1890.0::float8; count ------- 307 (1 row) SELECT count(*) FROM float8tmp WHERE a > -1890.0::float8; count ------- 306 (1 row)