-- varbit check CREATE TABLE varbittmp (a varbit); \copy varbittmp from 'data/varbit.data' SET enable_seqscan=on; SELECT count(*) FROM varbittmp WHERE a < '1110100111010'; SELECT count(*) FROM varbittmp WHERE a <= '1110100111010'; SELECT count(*) FROM varbittmp WHERE a = '1110100111010'; SELECT count(*) FROM varbittmp WHERE a >= '1110100111010'; SELECT count(*) FROM varbittmp WHERE a > '1110100111010'; SET client_min_messages = DEBUG1; CREATE INDEX varbitidx ON varbittmp USING GIST ( a ); CREATE INDEX varbitidx_b ON varbittmp USING GIST ( a ) WITH (buffering=on); DROP INDEX varbitidx_b; RESET client_min_messages; SET enable_seqscan=off; SELECT count(*) FROM varbittmp WHERE a < '1110100111010'::varbit; SELECT count(*) FROM varbittmp WHERE a <= '1110100111010'::varbit; SELECT count(*) FROM varbittmp WHERE a = '1110100111010'::varbit; SELECT count(*) FROM varbittmp WHERE a >= '1110100111010'::varbit; SELECT count(*) FROM varbittmp WHERE a > '1110100111010'::varbit; -- Test index-only scans SET enable_bitmapscan=off; EXPLAIN (COSTS OFF) SELECT a FROM bittmp WHERE a BETWEEN '1000000' and '1000001';