BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1995-04-01'
	and o_orderdate < cast(date '1995-04-01' + 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=1485669.35..1485669.36 rows=1 width=16) (actual time=13040.716..13040.717 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2638069 read=460618
   ->  HashAggregate  (cost=1485669.33..1485669.34 rows=1 width=16) (actual time=13040.668..13040.670 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2638064 read=460618
         ->  Nested Loop Semi Join  (cost=5898.53..1484907.55 rows=152357 width=16) (actual time=27.875..12752.543 rows=519963 loops=1)
               Buffers: shared hit=2638064 read=460618
               ->  Bitmap Heap Scan on orders  (cost=5897.97..271030.60 rows=571509 width=20) (actual time=27.845..5217.129 rows=566937 loops=1)
                     Recheck Cond: ((o_orderdate >= '1995-04-01'::date) AND (o_orderdate < '1995-07-01'::date))
                     Rows Removed by Index Recheck: 14433063
                     Heap Blocks: lossy=256560
                     Buffers: shared hit=164163 read=92408
                     ->  Bitmap Index Scan on orders_o_orderkey_o_orderdate_brin_idx  (cost=0.00..5755.09 rows=571509 width=0) (actual time=27.674..27.674 rows=2566400 loops=1)
                           Index Cond: ((o_orderdate >= '1995-04-01'::date) AND (o_orderdate < '1995-07-01'::date))
                           Buffers: shared hit=3 read=8
               ->  Index Scan using pk_lineitem on lineitem  (cost=0.56..7.16 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=566937)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Filter: (l_commitdate < l_receiptdate)
                     Rows Removed by Filter: 1
                     Buffers: shared hit=2473901 read=368210
 Planning time: 2.308 ms
 Execution time: 13040.843 ms
(24 rows)

COMMIT;
COMMIT