BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	o_orderpriority,
	count(*) as order_count
from
	orders
where
	o_orderdate >= date '1996-11-01'
	and o_orderdate < cast(date '1996-11-01' + 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=1482282.29..1482282.29 rows=1 width=16) (actual time=15882.258..15882.258 rows=5 loops=1)
   Sort Key: orders.o_orderpriority
   Sort Method: quicksort  Memory: 25kB
   Buffers: shared hit=2693301 read=439583 dirtied=58 written=6195
   ->  HashAggregate  (cost=1482282.27..1482282.28 rows=1 width=16) (actual time=15882.210..15882.210 rows=5 loops=1)
         Group Key: orders.o_orderpriority
         Buffers: shared hit=2693296 read=439583 dirtied=58 written=6195
         ->  Nested Loop Semi Join  (cost=5895.33..1481517.12 rows=153029 width=16) (actual time=27.849..15568.442 rows=526238 loops=1)
               Buffers: shared hit=2693296 read=439583 dirtied=58 written=6195
               ->  Bitmap Heap Scan on orders  (cost=5894.76..269757.72 rows=571197 width=20) (actual time=27.828..7060.977 rows=574027 loops=1)
                     Recheck Cond: ((o_orderdate >= '1996-11-01'::date) AND (o_orderdate < '1997-02-01'::date))
                     Rows Removed by Index Recheck: 14425973
                     Heap Blocks: lossy=255295
                     Buffers: shared hit=167454 read=87852 dirtied=58 written=1054
                     ->  Bitmap Index Scan on orders_o_orderkey_o_orderdate_brin_idx  (cost=0.00..5751.97 rows=571197 width=0) (actual time=27.659..27.659 rows=2553600 loops=1)
                           Index Cond: ((o_orderdate >= '1996-11-01'::date) AND (o_orderdate < '1997-02-01'::date))
                           Buffers: shared hit=3 read=8
               ->  Index Scan using pk_lineitem on lineitem  (cost=0.56..7.14 rows=5 width=4) (actual time=0.014..0.014 rows=1 loops=574027)
                     Index Cond: (l_orderkey = orders.o_orderkey)
                     Filter: (l_commitdate < l_receiptdate)
                     Rows Removed by Filter: 1
                     Buffers: shared hit=2525842 read=351731 written=5141
 Planning time: 2.834 ms
 Execution time: 15882.398 ms
(24 rows)

COMMIT;
COMMIT