BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1994-11-01'
	and o_orderdate < cast(date '1994-11-01' + 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=1152887.65..1152887.65 rows=1 width=16) (actual time=10091.416..10091.418 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2743891 read=317543 written=3344
   ->  HashAggregate  (cost=1152887.63..1152887.64 rows=1 width=16) (actual time=10091.345..10091.346 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2743886 read=317543 written=3344
         ->  Nested Loop Semi Join  (cost=12494.63..1152109.85 rows=155555 width=16) (actual time=339.209..9811.610 rows=527343 loops=1)
               Buffers: shared hit=2743886 read=317543 written=3344
               ->  Bitmap Heap Scan on orders  (cost=12494.07..277431.75 rows=575379 width=20) (actual time=339.089..2907.348 rows=574984 loops=1)
                     Recheck Cond: ((o_orderdate >= '1994-11-01'::date) AND (o_orderdate < '1995-02-01'::date))
                     Heap Blocks: exact=231017
                     Buffers: shared hit=128821 read=103861 written=1423
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12350.23 rows=575379 width=0) (actual time=253.910..253.910 rows=582056 loops=1)
                           Index Cond: ((o_orderdate >= '1994-11-01'::date) AND (o_orderdate < '1995-02-01'::date))
                           Buffers: shared read=1665 written=3
               ->  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=574984)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2615065 read=213682 written=1921
 Planning time: 3.249 ms
 Execution time: 10095.632 ms
(21 rows)

COMMIT;
COMMIT