BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-07-01'
	and o_orderdate < cast(date '1993-07-01' + 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=1154445.81..1154445.81 rows=1 width=16) (actual time=10279.466..10279.466 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2659302 read=397514 written=112
   ->  HashAggregate  (cost=1154445.79..1154445.80 rows=1 width=16) (actual time=10279.400..10279.402 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2659297 read=397514 written=112
         ->  Nested Loop Semi Join  (cost=12519.08..1153668.63 rows=155432 width=16) (actual time=300.660..9995.899 rows=526642 loops=1)
               Buffers: shared hit=2659297 read=397514 written=112
               ->  Bitmap Heap Scan on orders  (cost=12518.51..276278.65 rows=581276 width=20) (actual time=300.548..2511.584 rows=574335 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-07-01'::date) AND (o_orderdate < '1993-10-01'::date))
                     Heap Blocks: exact=229587
                     Buffers: shared hit=152488 read=78723 written=22
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12373.19 rows=581276 width=0) (actual time=220.061..220.061 rows=577635 loops=1)
                           Index Cond: ((o_orderdate >= '1993-07-01'::date) AND (o_orderdate < '1993-10-01'::date))
                           Buffers: shared read=1624
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.55 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=574335)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2506809 read=318791 written=90
 Planning time: 3.227 ms
 Execution time: 10282.933 ms
(21 rows)

COMMIT;
COMMIT