BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1995-11-01'
	and o_orderdate < cast(date '1995-11-01' + 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=1150588.17..1150588.18 rows=1 width=16) (actual time=10800.184..10800.185 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2765651 read=285378 dirtied=853 written=134
   ->  HashAggregate  (cost=1150588.15..1150588.16 rows=1 width=16) (actual time=10800.090..10800.092 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2765646 read=285378 dirtied=853 written=134
         ->  Nested Loop Semi Join  (cost=12375.37..1149807.48 rows=156135 width=16) (actual time=417.963..10509.211 rows=525656 loops=1)
               Buffers: shared hit=2765646 read=285378 dirtied=853 written=134
               ->  Bitmap Heap Scan on orders  (cost=12374.80..276035.85 rows=574670 width=20) (actual time=417.857..2469.567 rows=573115 loops=1)
                     Recheck Cond: ((o_orderdate >= '1995-11-01'::date) AND (o_orderdate < '1996-02-01'::date))
                     Heap Blocks: exact=229721
                     Buffers: shared hit=200557 read=30779 dirtied=442 written=14
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12231.14 rows=574670 width=0) (actual time=321.719..321.719 rows=576529 loops=1)
                           Index Cond: ((o_orderdate >= '1995-11-01'::date) AND (o_orderdate < '1996-02-01'::date))
                           Buffers: shared hit=1 read=1614
               ->  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=573115)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2565089 read=254599 dirtied=411 written=120
 Planning time: 4.593 ms
 Execution time: 10804.076 ms
(21 rows)

COMMIT;
COMMIT