BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1994-08-01'
	and o_orderdate < cast(date '1994-08-01' + 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=1492221.66..1492221.66 rows=1 width=16) (actual time=12111.224..12111.224 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2760510 read=371725
   ->  HashAggregate  (cost=1492221.64..1492221.65 rows=1 width=16) (actual time=12111.174..12111.174 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2760505 read=371725
         ->  Nested Loop Semi Join  (cost=5984.12..1491446.43 rows=155042 width=16) (actual time=27.794..11824.836 rows=525968 loops=1)
               Buffers: shared hit=2760505 read=371725
               ->  Bitmap Heap Scan on orders  (cost=5983.56..270482.44 rows=579859 width=20) (actual time=27.756..4651.932 rows=573798 loops=1)
                     Recheck Cond: ((o_orderdate >= '1994-08-01'::date) AND (o_orderdate < '1994-11-01'::date))
                     Rows Removed by Index Recheck: 14441202
                     Heap Blocks: lossy=255801
                     Buffers: shared hit=253659 read=2153
                     ->  Bitmap Index Scan on orders_o_orderkey_o_orderdate_brin_idx  (cost=0.00..5838.59 rows=579859 width=0) (actual time=27.587..27.587 rows=2558720 loops=1)
                           Index Cond: ((o_orderdate >= '1994-08-01'::date) AND (o_orderdate < '1994-11-01'::date))
                           Buffers: shared hit=11
               ->  Index Scan using pk_lineitem on lineitem  (cost=0.56..7.08 rows=5 width=4) (actual time=0.012..0.012 rows=1 loops=573798)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Filter: (l_commitdate < l_receiptdate)
                     Rows Removed by Filter: 1
                     Buffers: shared hit=2506846 read=369572
 Planning time: 2.151 ms
 Execution time: 12111.358 ms
(24 rows)

COMMIT;
COMMIT