BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1995-03-01'
	and o_orderdate < cast(date '1995-03-01' + 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=1147203.65..1147203.65 rows=1 width=16) (actual time=10000.497..10000.498 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2684701 read=372456 written=138
   ->  HashAggregate  (cost=1147203.63..1147203.64 rows=1 width=16) (actual time=10000.423..10000.423 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2684696 read=372456 written=138
         ->  Nested Loop Semi Join  (cost=12443.46..1146440.10 rows=152706 width=16) (actual time=330.846..9727.216 rows=526447 loops=1)
               Buffers: shared hit=2684696 read=372456 written=138
               ->  Bitmap Heap Scan on orders  (cost=12442.90..276150.91 rows=577801 width=20) (actual time=330.704..1893.971 rows=574395 loops=1)
                     Recheck Cond: ((o_orderdate >= '1995-03-01'::date) AND (o_orderdate < '1995-06-01'::date))
                     Heap Blocks: exact=229918
                     Buffers: shared hit=212123 read=19416 written=6
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12298.44 rows=577801 width=0) (actual time=245.660..245.660 rows=577854 loops=1)
                           Index Cond: ((o_orderdate >= '1995-03-01'::date) AND (o_orderdate < '1995-06-01'::date))
                           Buffers: shared read=1621 written=3
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.56 rows=5 width=4) (actual time=0.013..0.013 rows=1 loops=574395)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2472573 read=353040 written=132
 Planning time: 4.218 ms
 Execution time: 10003.109 ms
(21 rows)

COMMIT;
COMMIT