BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-02-01'
	and o_orderdate < cast(date '1996-02-01' + interval '3 month' as date)
	and exists (
		select
			*
		from
			lineitem
		where
			l_orderkey = o_orderkey
			and l_commitdate < l_receiptdate
	)
group by
	o_orderpriority
order by
	o_orderpriority;
                                                                                         QUERY PLAN                                                                                          
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Sort  (cost=1301384.51..1301384.52 rows=1 width=16) (actual time=132109.694..132109.695 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=950244 read=585909 dirtied=1240 written=39
   ->  HashAggregate  (cost=1301384.49..1301384.50 rows=1 width=16) (actual time=132109.579..132109.581 rows=5 loops=1)
         Buffers: shared hit=950239 read=585909 dirtied=1240 written=39
         ->  Hash Join  (cost=1030168.20..1300655.92 rows=145715 width=16) (actual time=113354.732..131691.182 rows=515122 loops=1)
               Hash Cond: (orders.o_orderkey = lineitem.l_orderkey)
               Buffers: shared hit=950239 read=585909 dirtied=1240 written=39
               ->  Bitmap Heap Scan on orders  (cost=12062.09..277204.98 rows=555326 width=20) (actual time=648.945..6220.781 rows=561691 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-02-01'::date) AND (o_orderdate < '1996-05-01'::date))
                     Buffers: shared hit=141165 read=90456
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11923.25 rows=555326 width=0) (actual time=536.479..536.479 rows=568888 loops=1)
                           Index Cond: ((o_orderdate >= '1996-02-01'::date) AND (o_orderdate < '1996-05-01'::date))
                           Buffers: shared read=1629
               ->  Hash  (cost=1001476.92..1001476.92 rows=1330336 width=4) (actual time=112703.634..112703.634 rows=13767230 loops=1)
                     Buckets: 262144  Batches: 1  Memory Usage: 484005kB
                     Buffers: shared hit=809074 read=495453 dirtied=1240 written=39
                     ->  HashAggregate  (cost=988173.56..1001476.92 rows=1330336 width=4) (actual time=98111.202..107552.842 rows=13767230 loops=1)
                           Buffers: shared hit=809074 read=495453 dirtied=1240 written=39
                           ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.00..937486.18 rows=20274952 width=4) (actual time=0.175..58795.304 rows=37966096 loops=1)
                                 Buffers: shared hit=809074 read=495453 dirtied=1240 written=39
 Total runtime: 132545.071 ms
(23 rows)

COMMIT;
COMMIT