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=1135912.48..1135912.48 rows=1 width=16) (actual time=8189.158..8189.159 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2845833 read=145263 written=6662
   ->  HashAggregate  (cost=1135912.46..1135912.47 rows=1 width=16) (actual time=8189.093..8189.096 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2845828 read=145263 written=6662
         ->  Nested Loop Semi Join  (cost=12277.38..1135157.89 rows=150914 width=16) (actual time=358.673..7939.921 rows=514571 loops=1)
               Buffers: shared hit=2845828 read=145263 written=6662
               ->  Bitmap Heap Scan on orders  (cost=12276.81..276307.31 rows=565500 width=20) (actual time=358.539..2789.822 rows=561122 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-02-01'::date) AND (o_orderdate < '1996-05-01'::date))
                     Heap Blocks: exact=228873
                     Buffers: shared hit=137308 read=93187 written=2619
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12135.43 rows=565500 width=0) (actual time=259.403..259.403 rows=566114 loops=1)
                           Index Cond: ((o_orderdate >= '1996-02-01'::date) AND (o_orderdate < '1996-05-01'::date))
                           Buffers: shared read=1622 written=168
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.59 rows=5 width=4) (actual time=0.008..0.008 rows=1 loops=561122)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2708520 read=52076 written=4043
 Planning time: 3.115 ms
 Execution time: 8191.315 ms
(21 rows)

COMMIT;
COMMIT