BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1997-07-01'
	and o_orderdate < cast(date '1997-07-01' + 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=1485059.38..1485059.39 rows=1 width=16) (actual time=14185.656..14185.656 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2522256 read=611372
   ->  HashAggregate  (cost=1485059.36..1485059.37 rows=1 width=16) (actual time=14185.608..14185.608 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2522251 read=611372
         ->  Nested Loop Semi Join  (cost=5966.81..1484279.46 rows=155980 width=16) (actual time=27.966..13874.827 rows=526449 loops=1)
               Buffers: shared hit=2522251 read=611372
               ->  Bitmap Heap Scan on orders  (cost=5966.24..268160.79 rows=578170 width=20) (actual time=27.926..4273.666 rows=574557 loops=1)
                     Recheck Cond: ((o_orderdate >= '1997-07-01'::date) AND (o_orderdate < '1997-10-01'::date))
                     Rows Removed by Index Recheck: 14440443
                     Heap Blocks: lossy=253522
                     Buffers: shared hit=252591 read=942
                     ->  Bitmap Index Scan on orders_o_orderkey_o_orderdate_brin_idx  (cost=0.00..5821.70 rows=578170 width=0) (actual time=27.759..27.759 rows=2535680 loops=1)
                           Index Cond: ((o_orderdate >= '1997-07-01'::date) AND (o_orderdate < '1997-10-01'::date))
                           Buffers: shared hit=3 read=8
               ->  Index Scan using pk_lineitem on lineitem  (cost=0.56..7.04 rows=5 width=4) (actual time=0.016..0.016 rows=1 loops=574557)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Filter: (l_commitdate < l_receiptdate)
                     Rows Removed by Filter: 1
                     Buffers: shared hit=2269660 read=610430
 Planning time: 2.075 ms
 Execution time: 14185.777 ms
(24 rows)

COMMIT;
COMMIT