BEGIN; BEGIN EXPLAIN (ANALYZE, BUFFERS) select sum(l_extendedprice * l_discount) as revenue from lineitem where l_shipdate >= date '1996-01-01' and l_shipdate < cast(date '1996-01-01' + interval '1 year' as date) and l_discount between 0.03 - 0.01 and 0.03 + 0.01 and l_quantity < 25; QUERY PLAN ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Aggregate (cost=1488646.70..1488646.71 rows=1 width=8) (actual time=25512.459..25512.459 rows=1 loops=1) Buffers: shared hit=373859 read=669451 written=31121 -> Bitmap Heap Scan on lineitem (cost=193827.78..1484590.62 rows=811215 width=8) (actual time=8111.498..25245.242 rows=797687 loops=1) Recheck Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Filter: ((l_discount >= 0.02::double precision) AND (l_discount <= 0.04::double precision) AND (l_quantity < 25::double precision)) Rows Removed by Filter: 8335124 Buffers: shared hit=373859 read=669451 written=31121 -> Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx (cost=0.00..193624.98 rows=9305815 width=0) (actual time=7388.340..7388.340 rows=9260391 loops=1) Index Cond: ((l_shipdate >= '1996-01-01'::date) AND (l_shipdate < '1997-01-01'::date)) Buffers: shared hit=1 read=24932 Total runtime: 25519.853 ms (11 rows) COMMIT; COMMIT