BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-04-01'
	and o_orderdate < cast(date '1996-04-01' + 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=1141515.12..1141515.13 rows=1 width=16) (actual time=9963.310..9963.312 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2708371 read=310302 dirtied=99 written=3856
   ->  HashAggregate  (cost=1141515.10..1141515.11 rows=1 width=16) (actual time=9963.238..9963.240 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2708366 read=310302 dirtied=99 written=3856
         ->  Nested Loop Semi Join  (cost=12074.25..1140745.76 rows=153869 width=16) (actual time=537.637..9697.542 rows=519634 loops=1)
               Buffers: shared hit=2708366 read=310302 dirtied=99 written=3856
               ->  Bitmap Heap Scan on orders  (cost=12073.69..275150.01 rows=569488 width=20) (actual time=537.448..2796.333 rows=566949 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-04-01'::date) AND (o_orderdate < '1996-07-01'::date))
                     Heap Blocks: exact=228134
                     Buffers: shared hit=163662 read=66030 dirtied=99 written=1229
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11931.32 rows=569488 width=0) (actual time=409.008..409.008 rows=569745 loops=1)
                           Index Cond: ((o_orderdate >= '1996-04-01'::date) AND (o_orderdate < '1996-07-01'::date))
                           Buffers: shared read=1558 written=2
               ->  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=566949)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2544704 read=244272 written=2627
 Planning time: 3.288 ms
 Execution time: 9967.105 ms
(21 rows)

COMMIT;
COMMIT