BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-03-01'
	and o_orderdate < cast(date '1996-03-01' + 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=1135134.80..1135134.80 rows=1 width=16) (actual time=10042.313..10042.313 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2535787 read=521794
   ->  HashAggregate  (cost=1135134.78..1135134.79 rows=1 width=16) (actual time=10042.250..10042.252 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2535782 read=521794
         ->  Nested Loop Semi Join  (cost=12077.22..1134377.86 rows=151384 width=16) (actual time=231.481..9772.318 rows=527046 loops=1)
               Buffers: shared hit=2535782 read=521794
               ->  Bitmap Heap Scan on orders  (cost=12076.65..274139.46 rows=569387 width=20) (actual time=231.314..1640.489 rows=574748 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-03-01'::date) AND (o_orderdate < '1996-06-01'::date))
                     Heap Blocks: exact=228407
                     Buffers: shared hit=228407 read=1571
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11934.30 rows=569387 width=0) (actual time=162.583..162.583 rows=574748 loops=1)
                           Index Cond: ((o_orderdate >= '1996-03-01'::date) AND (o_orderdate < '1996-06-01'::date))
                           Buffers: shared read=1571
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.57 rows=5 width=4) (actual time=0.013..0.013 rows=1 loops=574748)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2307375 read=520223
 Planning time: 4.379 ms
 Execution time: 10043.690 ms
(21 rows)

COMMIT;
COMMIT