BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-12-01'
	and o_orderdate < cast(date '1996-12-01' + 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=1139397.56..1139397.56 rows=1 width=16) (actual time=9292.137..9292.138 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2670421 read=323383 written=2361
   ->  HashAggregate  (cost=1139397.54..1139397.55 rows=1 width=16) (actual time=9292.080..9292.081 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2670416 read=323383 written=2361
         ->  Nested Loop Semi Join  (cost=12050.43..1138627.45 rows=154017 width=16) (actual time=317.639..9024.715 rows=515449 loops=1)
               Buffers: shared hit=2670416 read=323383 written=2361
               ->  Bitmap Heap Scan on orders  (cost=12049.87..274349.89 rows=568335 width=20) (actual time=317.541..2485.337 rows=561926 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-12-01'::date) AND (o_orderdate < '1997-03-01'::date))
                     Heap Blocks: exact=227565
                     Buffers: shared hit=147622 read=81481 written=676
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11907.78 rows=568335 width=0) (actual time=233.402..233.402 rows=563093 loops=1)
                           Index Cond: ((o_orderdate >= '1996-12-01'::date) AND (o_orderdate < '1997-03-01'::date))
                           Buffers: shared read=1538 written=46
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.57 rows=5 width=4) (actual time=0.011..0.011 rows=1 loops=561926)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2522794 read=241902 written=1685
 Planning time: 2.617 ms
 Execution time: 9294.494 ms
(21 rows)

COMMIT;
COMMIT