BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-03-01'
	and o_orderdate < cast(date '1993-03-01' + 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=1150664.29..1150664.29 rows=1 width=16) (actual time=9234.684..9234.685 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2665426 read=391448 written=363
   ->  HashAggregate  (cost=1150664.27..1150664.28 rows=1 width=16) (actual time=9234.622..9234.624 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2665421 read=391448 written=363
         ->  Nested Loop Semi Join  (cost=12462.48..1149889.48 rows=154958 width=16) (actual time=272.493..8962.880 rows=526765 loops=1)
               Buffers: shared hit=2665421 read=391448 written=363
               ->  Bitmap Heap Scan on orders  (cost=12461.92..277375.96 rows=573803 width=20) (actual time=272.372..1803.634 rows=574015 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-03-01'::date) AND (o_orderdate < '1993-06-01'::date))
                     Heap Blocks: exact=230733
                     Buffers: shared hit=222816 read=9576
                     ->  Bitmap Index Scan on orders_o_orderdate_o_orderkey_idx  (cost=0.00..12318.46 rows=573803 width=0) (actual time=198.165..198.165 rows=580210 loops=1)
                           Index Cond: ((o_orderdate >= '1993-03-01'::date) AND (o_orderdate < '1993-06-01'::date))
                           Buffers: shared read=1659
               ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem  (cost=0.56..4.58 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=574015)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Buffers: shared hit=2442605 read=381872 written=363
 Planning time: 2.534 ms
 Execution time: 9236.450 ms
(21 rows)

COMMIT;
COMMIT