BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1994-12-01'
	and o_orderdate < cast(date '1994-12-01' + 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=1125837.20..1125837.20 rows=1 width=16) (actual time=10196.974..10196.974 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2625067 read=368764 written=71
   ->  HashAggregate  (cost=1125837.18..1125837.19 rows=1 width=16) (actual time=10196.901..10196.901 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2625062 read=368764 written=71
         ->  Nested Loop Semi Join  (cost=11884.44..1125093.48 rows=148740 width=16) (actual time=417.005..9929.942 rows=515633 loops=1)
               Buffers: shared hit=2625062 read=368764 written=71
               ->  Bitmap Heap Scan on orders  (cost=11883.87..274581.61 rows=561116 width=20) (actual time=416.895..2617.372 rows=561858 loops=1)
                     Recheck Cond: ((o_orderdate >= '1994-12-01'::date) AND (o_orderdate < '1995-03-01'::date))
                     Heap Blocks: exact=227743
                     Buffers: shared hit=153238 read=76042 written=15
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11743.59 rows=561116 width=0) (actual time=303.704..303.704 rows=563554 loops=1)
                           Index Cond: ((o_orderdate >= '1994-12-01'::date) AND (o_orderdate < '1995-03-01'::date))
                           Buffers: shared hit=1 read=1536
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.59 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=561858)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2471824 read=292722 written=56
 Planning time: 3.329 ms
 Execution time: 10198.528 ms
(21 rows)

COMMIT;
COMMIT