BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1995-06-01'
	and o_orderdate < cast(date '1995-06-01' + 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=1152281.91..1152281.91 rows=1 width=16) (actual time=8649.194..8649.196 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2912820 read=143555 written=33
   ->  HashAggregate  (cost=1152281.89..1152281.90 rows=1 width=16) (actual time=8649.131..8649.133 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2912815 read=143555 written=33
         ->  Nested Loop Semi Join  (cost=12224.26..1151496.44 rows=157090 width=16) (actual time=427.629..8390.081 rows=527034 loops=1)
               Buffers: shared hit=2912815 read=143555 written=33
               ->  Bitmap Heap Scan on orders  (cost=12223.70..275161.18 rows=577099 width=20) (actual time=427.553..2028.790 rows=574322 loops=1)
                     Recheck Cond: ((o_orderdate >= '1995-06-01'::date) AND (o_orderdate < '1995-09-01'::date))
                     Heap Blocks: exact=228931
                     Buffers: shared hit=224034 read=6468
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12079.42 rows=577099 width=0) (actual time=322.933..322.933 rows=576060 loops=1)
                           Index Cond: ((o_orderdate >= '1995-06-01'::date) AND (o_orderdate < '1995-09-01'::date))
                           Buffers: shared hit=1 read=1570
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.55 rows=5 width=4) (actual time=0.010..0.010 rows=1 loops=574322)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2688781 read=137087 written=33
 Planning time: 2.607 ms
 Execution time: 8651.543 ms
(21 rows)

COMMIT;
COMMIT