BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-01-01'
	and o_orderdate < cast(date '1996-01-01' + 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=1140480.27..1140480.28 rows=1 width=16) (actual time=9284.019..9284.020 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2684847 read=334425 written=6934
   ->  HashAggregate  (cost=1140480.25..1140480.26 rows=1 width=16) (actual time=9283.951..9283.953 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2684842 read=334425 written=6934
         ->  Nested Loop Semi Join  (cost=12051.59..1139704.79 rows=155092 width=16) (actual time=267.453..9012.635 rows=519959 loops=1)
               Buffers: shared hit=2684842 read=334425 written=6934
               ->  Bitmap Heap Scan on orders  (cost=12051.03..274093.90 rows=568058 width=20) (actual time=267.357..2691.916 rows=567125 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-01-01'::date) AND (o_orderdate < '1996-04-01'::date))
                     Heap Blocks: exact=227693
                     Buffers: shared hit=120148 read=109098 written=2988
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11909.01 rows=568058 width=0) (actual time=194.232..194.232 rows=567663 loops=1)
                           Index Cond: ((o_orderdate >= '1996-01-01'::date) AND (o_orderdate < '1996-04-01'::date))
                           Buffers: shared read=1553 written=82
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.57 rows=5 width=4) (actual time=0.010..0.010 rows=1 loops=567125)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2564694 read=225327 written=3946
 Planning time: 3.355 ms
 Execution time: 9286.108 ms
(21 rows)

COMMIT;
COMMIT