BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-09-01'
	and o_orderdate < cast(date '1996-09-01' + 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=1128863.97..1128863.98 rows=1 width=16) (actual time=9636.570..9636.570 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2631229 read=386242 written=2
   ->  HashAggregate  (cost=1128863.95..1128863.96 rows=1 width=16) (actual time=9636.501..9636.502 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2631224 read=386242 written=2
         ->  Nested Loop Semi Join  (cost=11820.83..1128104.45 rows=151900 width=16) (actual time=293.201..9372.424 rows=519543 loops=1)
               Buffers: shared hit=2631224 read=386242 written=2
               ->  Bitmap Heap Scan on orders  (cost=11820.26..274471.74 rows=558032 width=20) (actual time=293.086..2502.341 rows=566667 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-09-01'::date) AND (o_orderdate < '1996-12-01'::date))
                     Heap Blocks: exact=228230
                     Buffers: shared hit=137395 read=92385
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11680.75 rows=558032 width=0) (actual time=213.770..213.770 rows=568428 loops=1)
                           Index Cond: ((o_orderdate >= '1996-09-01'::date) AND (o_orderdate < '1996-12-01'::date))
                           Buffers: shared read=1550
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.60 rows=5 width=4) (actual time=0.011..0.011 rows=1 loops=566667)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2493829 read=293857 written=2
 Planning time: 3.413 ms
 Execution time: 9639.009 ms
(21 rows)

COMMIT;
COMMIT