BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-08-01'
	and o_orderdate < cast(date '1993-08-01' + 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=1153178.98..1153178.98 rows=1 width=16) (actual time=10628.571..10628.572 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2733247 read=322445 written=37
   ->  HashAggregate  (cost=1153178.96..1153178.97 rows=1 width=16) (actual time=10628.496..10628.498 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2733242 read=322445 written=37
         ->  Nested Loop Semi Join  (cost=12358.50..1152405.51 rows=154689 width=16) (actual time=339.561..10359.836 rows=526350 loops=1)
               Buffers: shared hit=2733242 read=322445 written=37
               ->  Bitmap Heap Scan on orders  (cost=12357.94..275392.35 rows=583561 width=20) (actual time=339.470..2233.810 rows=574335 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-08-01'::date) AND (o_orderdate < '1993-11-01'::date))
                     Heap Blocks: exact=228811
                     Buffers: shared hit=201692 read=28690 written=4
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12212.05 rows=583561 width=0) (actual time=257.770..257.770 rows=575940 loops=1)
                           Index Cond: ((o_orderdate >= '1993-08-01'::date) AND (o_orderdate < '1993-11-01'::date))
                           Buffers: shared read=1571
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.54 rows=5 width=4) (actual time=0.013..0.013 rows=1 loops=574335)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2531550 read=293755 written=33
 Planning time: 2.763 ms
 Execution time: 10631.383 ms
(21 rows)

COMMIT;
COMMIT