BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-11-01'
	and o_orderdate < cast(date '1996-11-01' + 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=1134974.38..1134974.38 rows=1 width=16) (actual time=10763.905..10763.906 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2671530 read=385920 dirtied=176 written=8
   ->  HashAggregate  (cost=1134974.36..1134974.37 rows=1 width=16) (actual time=10763.832..10763.832 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2671525 read=385920 dirtied=176 written=8
         ->  Nested Loop Semi Join  (cost=12041.13..1134220.74 rows=150723 width=16) (actual time=315.521..10494.028 rows=526782 loops=1)
               Buffers: shared hit=2671525 read=385920 dirtied=176 written=8
               ->  Bitmap Heap Scan on orders  (cost=12040.56..274850.53 rows=568598 width=20) (actual time=315.422..2731.147 rows=574597 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-11-01'::date) AND (o_orderdate < '1997-02-01'::date))
                     Heap Blocks: exact=229173
                     Buffers: shared hit=138530 read=92215 dirtied=176
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11898.41 rows=568598 width=0) (actual time=234.268..234.268 rows=576386 loops=1)
                           Index Cond: ((o_orderdate >= '1996-11-01'::date) AND (o_orderdate < '1997-02-01'::date))
                           Buffers: shared read=1572
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.57 rows=5 width=4) (actual time=0.013..0.013 rows=1 loops=574597)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2532995 read=293705 written=8
 Planning time: 3.762 ms
 Execution time: 10765.493 ms
(21 rows)

COMMIT;
COMMIT