BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1997-06-01'
	and o_orderdate < cast(date '1997-06-01' + 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=1302585.93..1302585.93 rows=1 width=16) (actual time=126251.265..126251.266 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=1104568 read=423805 written=35
   ->  HashAggregate  (cost=1302585.91..1302585.92 rows=1 width=16) (actual time=126251.073..126251.075 rows=5 loops=1)
         Buffers: shared hit=1104563 read=423805 written=35
         ->  Hash Join  (cost=1030714.94..1301824.22 rows=152338 width=16) (actual time=110828.167..125881.253 rows=527001 loops=1)
               Hash Cond: (orders.o_orderkey = lineitem.l_orderkey)
               Buffers: shared hit=1104563 read=423805 written=35
               ->  Bitmap Heap Scan on orders  (cost=12608.82..278130.34 rows=580568 width=20) (actual time=1012.410..5248.455 rows=574837 loops=1)
                     Recheck Cond: ((o_orderdate >= '1997-06-01'::date) AND (o_orderdate < '1997-09-01'::date))
                     Buffers: shared hit=231388 read=1676
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12463.67 rows=580568 width=0) (actual time=871.536..871.536 rows=582465 loops=1)
                           Index Cond: ((o_orderdate >= '1997-06-01'::date) AND (o_orderdate < '1997-09-01'::date))
                           Buffers: shared read=1670
               ->  Hash  (cost=1001476.92..1001476.92 rows=1330336 width=4) (actual time=109814.195..109814.195 rows=13767230 loops=1)
                     Buckets: 262144  Batches: 1  Memory Usage: 484005kB
                     Buffers: shared hit=873175 read=422129 written=35
                     ->  HashAggregate  (cost=988173.56..1001476.92 rows=1330336 width=4) (actual time=95333.980..105601.968 rows=13767230 loops=1)
                           Buffers: shared hit=873175 read=422129 written=35
                           ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.00..937486.18 rows=20274952 width=4) (actual time=0.134..54986.858 rows=37966096 loops=1)
                                 Buffers: shared hit=873175 read=422129 written=35
 Total runtime: 126680.712 ms
(23 rows)

COMMIT;
COMMIT