BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1994-04-01'
	and o_orderdate < cast(date '1994-04-01' + 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=1496400.06..1496400.06 rows=1 width=16) (actual time=13166.011..13166.011 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2628723 read=475258
   ->  HashAggregate  (cost=1496400.04..1496400.05 rows=1 width=16) (actual time=13165.964..13165.966 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2628718 read=475258
         ->  Nested Loop Semi Join  (cost=6007.92..1495624.03 rows=155202 width=16) (actual time=27.828..12868.974 rows=521033 loops=1)
               Buffers: shared hit=2628718 read=475258
               ->  Bitmap Heap Scan on orders  (cost=6007.36..271300.07 rows=582181 width=20) (actual time=27.777..4893.375 rows=568012 loops=1)
                     Recheck Cond: ((o_orderdate >= '1994-04-01'::date) AND (o_orderdate < '1994-07-01'::date))
                     Rows Removed by Index Recheck: 14431988
                     Heap Blocks: lossy=256560
                     Buffers: shared hit=213874 read=42697
                     ->  Bitmap Index Scan on orders_o_orderkey_o_orderdate_brin_idx  (cost=0.00..5861.81 rows=582181 width=0) (actual time=27.611..27.611 rows=2566400 loops=1)
                           Index Cond: ((o_orderdate >= '1994-04-01'::date) AND (o_orderdate < '1994-07-01'::date))
                           Buffers: shared hit=11
               ->  Index Scan using pk_lineitem on lineitem  (cost=0.56..7.08 rows=5 width=4) (actual time=0.013..0.013 rows=1 loops=568012)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Filter: (l_commitdate < l_receiptdate)
                     Rows Removed by Filter: 1
                     Buffers: shared hit=2414844 read=432561
 Planning time: 2.091 ms
 Execution time: 13166.147 ms
(24 rows)

COMMIT;
COMMIT