BEGIN;
BEGIN
create or replace view revenue22 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-08-01'
		and l_shipdate < date'1994-08-01' + interval '90 days'
	group by
		l_suppkey;
CREATE VIEW
EXPLAIN (ANALYZE, BUFFERS)
select
	s_suppkey,
	s_name,
	s_address,
	s_phone,
	total_revenue
from
	supplier,
	revenue22
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue22
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2378876.39..2383973.79 rows=3746 width=79) (actual time=21771.712..21771.718 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue22.supplier_no)
   Buffers: shared hit=677449 read=652680 dirtied=237 written=9258
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180813.41..1180813.42 rows=1 width=8) (actual time=10458.422..10458.422 rows=1 loops=1)
           Buffers: shared hit=304335 read=360075 written=443
           ->  HashAggregate  (cost=1180729.12..1180766.58 rows=3746 width=12) (actual time=10414.418..10447.661 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=304335 read=360075 written=443
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47926.70..1158026.55 rows=2270257 width=12) (actual time=1297.672..8514.860 rows=2245331 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=658270
                       Buffers: shared hit=304335 read=360075 written=443
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47359.14 rows=2270257 width=0) (actual time=989.706..989.706 rows=2270203 loops=1)
                             Index Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6140 written=26
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.027..20.743 rows=47970 loops=1)
         Buffers: shared hit=1310
   ->  Sort  (cost=1198062.68..1198072.05 rows=3746 width=12) (actual time=21746.017..21746.019 rows=1 loops=1)
         Sort Key: revenue22.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=676139 read=652680 dirtied=237 written=9258
         ->  Subquery Scan on revenue22  (cost=1197756.05..1197840.34 rows=3746 width=12) (actual time=21742.877..21745.983 rows=1 loops=1)
               Buffers: shared hit=676139 read=652680 dirtied=237 written=9258
               ->  HashAggregate  (cost=1197756.05..1197802.88 rows=3746 width=12) (actual time=21742.875..21745.980 rows=1 loops=1)
                     Group Key: lineitem.l_suppkey
                     Filter: (sum((lineitem.l_extendedprice * (1::double precision - lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=676139 read=652680 dirtied=237 written=9258
                     ->  Bitmap Heap Scan on lineitem  (cost=47926.70..1158026.55 rows=2270257 width=12) (actual time=1511.548..8912.118 rows=2245331 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=658269
                           Buffers: shared hit=371804 read=292605 dirtied=237 written=8815
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47359.14 rows=2270257 width=0) (actual time=1181.910..1181.910 rows=2268107 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-08-01'::date) AND (l_shipdate < '1994-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6140 written=33
 Planning time: 3.013 ms
 Execution time: 21791.904 ms
(38 rows)

drop view revenue22;
DROP VIEW
COMMIT;
COMMIT