BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1995-06-01'
	and o_orderdate < cast(date '1995-06-01' + 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=1142294.30..1142294.31 rows=1 width=16) (actual time=8804.055..8804.055 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2763035 read=291076 written=15495
   ->  HashAggregate  (cost=1142294.28..1142294.29 rows=1 width=16) (actual time=8804.002..8804.005 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2763030 read=291076 written=15495
         ->  Nested Loop Semi Join  (cost=12304.35..1141530.52 rows=152752 width=16) (actual time=285.760..8528.638 rows=526484 loops=1)
               Buffers: shared hit=2763030 read=291076 written=15495
               ->  Bitmap Heap Scan on orders  (cost=12303.79..275913.60 rows=571254 width=20) (actual time=285.620..2139.412 rows=573709 loops=1)
                     Recheck Cond: ((o_orderdate >= '1995-06-01'::date) AND (o_orderdate < '1995-09-01'::date))
                     Heap Blocks: exact=229612
                     Buffers: shared hit=178473 read=52764 written=2319
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12160.98 rows=571254 width=0) (actual time=206.736..206.736 rows=577792 loops=1)
                           Index Cond: ((o_orderdate >= '1995-06-01'::date) AND (o_orderdate < '1995-09-01'::date))
                           Buffers: shared read=1625 written=197
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.58 rows=5 width=4) (actual time=0.010..0.010 rows=1 loops=573709)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2584557 read=238312 written=13176
 Planning time: 2.818 ms
 Execution time: 8806.761 ms
(21 rows)

COMMIT;
COMMIT