BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-06-01'
	and o_orderdate < cast(date '1996-06-01' + 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=1140865.03..1140865.04 rows=1 width=16) (actual time=9118.125..9118.126 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2763631 read=291719 written=4669
   ->  HashAggregate  (cost=1140865.01..1140865.02 rows=1 width=16) (actual time=9118.034..9118.034 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2763626 read=291719 written=4669
         ->  Nested Loop Semi Join  (cost=12044.38..1140090.22 rows=154958 width=16) (actual time=290.042..8848.261 rows=526403 loops=1)
               Buffers: shared hit=2763626 read=291719 written=4669
               ->  Bitmap Heap Scan on orders  (cost=12043.82..274340.84 rows=568135 width=20) (actual time=289.897..2480.558 rows=574313 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-06-01'::date) AND (o_orderdate < '1996-09-01'::date))
                     Heap Blocks: exact=228530
                     Buffers: shared hit=156074 read=74029 written=1492
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..11901.78 rows=568135 width=0) (actual time=210.292..210.292 rows=575402 loops=1)
                           Index Cond: ((o_orderdate >= '1996-06-01'::date) AND (o_orderdate < '1996-09-01'::date))
                           Buffers: shared read=1573 written=79
               ->  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=574313)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2607552 read=217690 written=3177
 Planning time: 2.656 ms
 Execution time: 9121.435 ms
(21 rows)

COMMIT;
COMMIT