BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1993-08-01'
	and o_orderdate < cast(date '1993-08-01' + 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=1489844.09..1489844.10 rows=1 width=16) (actual time=13357.462..13357.463 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2732384 read=402245 written=442
   ->  HashAggregate  (cost=1489844.07..1489844.08 rows=1 width=16) (actual time=13357.419..13357.421 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2732379 read=402245 written=442
         ->  Nested Loop Semi Join  (cost=5972.37..1489068.86 rows=155042 width=16) (actual time=27.829..13056.481 rows=526372 loops=1)
               Buffers: shared hit=2732379 read=402245 written=442
               ->  Bitmap Heap Scan on orders  (cost=5971.80..269947.48 rows=578712 width=20) (actual time=27.808..5517.768 rows=574386 loops=1)
                     Recheck Cond: ((o_orderdate >= '1993-08-01'::date) AND (o_orderdate < '1993-11-01'::date))
                     Rows Removed by Index Recheck: 14440614
                     Heap Blocks: lossy=255295
                     Buffers: shared hit=205255 read=50051 written=58
                     ->  Bitmap Index Scan on orders_o_orderkey_o_orderdate_brin_idx  (cost=0.00..5827.12 rows=578712 width=0) (actual time=27.638..27.638 rows=2553600 loops=1)
                           Index Cond: ((o_orderdate >= '1993-08-01'::date) AND (o_orderdate < '1993-11-01'::date))
                           Buffers: shared hit=3 read=8
               ->  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=574386)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Filter: (l_commitdate < l_receiptdate)
                     Rows Removed by Filter: 1
                     Buffers: shared hit=2527124 read=352194 written=384
 Planning time: 2.482 ms
 Execution time: 13357.600 ms
(24 rows)

COMMIT;
COMMIT