BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-01-01'
	and o_orderdate < cast(date '1993-01-01' + 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=1151719.85..1151719.85 rows=1 width=16) (actual time=11834.472..11834.473 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2682671 read=311678 written=8775
   ->  HashAggregate  (cost=1151719.83..1151719.84 rows=1 width=16) (actual time=11834.397..11834.398 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2682666 read=311678 written=8775
         ->  Nested Loop Semi Join  (cost=12229.32..1150932.33 rows=157499 width=16) (actual time=426.914..11496.294 rows=515447 loops=1)
               Buffers: shared hit=2682666 read=311678 written=8775
               ->  Bitmap Heap Scan on orders  (cost=12228.76..274655.94 rows=576812 width=20) (actual time=426.782..2357.115 rows=562119 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-01-01'::date) AND (o_orderdate < '1993-04-01'::date))
                     Heap Blocks: exact=227282
                     Buffers: shared hit=207974 read=20847 written=616
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12084.55 rows=576812 width=0) (actual time=300.024..300.024 rows=563214 loops=1)
                           Index Cond: ((o_orderdate >= '1993-01-01'::date) AND (o_orderdate < '1993-04-01'::date))
                           Buffers: shared read=1539
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.55 rows=5 width=4) (actual time=0.015..0.015 rows=1 loops=562119)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2474692 read=290831 written=8159
 Planning time: 3.279 ms
 Execution time: 11837.526 ms
(21 rows)

COMMIT;
COMMIT