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 >= '1995-02-01'
		and l_shipdate < date'1995-02-01' + 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=2382292.85..2387391.05 rows=3800 width=79) (actual time=25709.811..25709.816 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue22.supplier_no)
   Buffers: shared hit=581326 read=751167 dirtied=442 written=9865
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1182391.65..1182391.66 rows=1 width=8) (actual time=12447.642..12447.642 rows=1 loops=1)
           Buffers: shared hit=297784 read=367321 written=377
           ->  HashAggregate  (cost=1182306.15..1182344.15 rows=3800 width=12) (actual time=12331.170..12436.247 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=297784 read=367321 written=377
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48649.10..1159261.73 rows=2304442 width=12) (actual time=1818.847..9260.548 rows=2247378 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=658959
                       Buffers: shared hit=297784 read=367321 written=377
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48072.99 rows=2304442 width=0) (actual time=1504.104..1504.104 rows=2272240 loops=1)
                             Index Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6146 written=14
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..37.626 rows=83967 loops=1)
         Buffers: shared hit=2283
   ->  Sort  (cost=1199900.90..1199910.40 rows=3800 width=12) (actual time=25663.284..25663.287 rows=1 loops=1)
         Sort Key: revenue22.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=579043 read=751167 dirtied=442 written=9865
         ->  Subquery Scan on revenue22  (cost=1199589.46..1199674.96 rows=3800 width=12) (actual time=25625.715..25663.242 rows=1 loops=1)
               Buffers: shared hit=579043 read=751167 dirtied=442 written=9865
               ->  HashAggregate  (cost=1199589.46..1199636.96 rows=3800 width=12) (actual time=25625.713..25663.239 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=579043 read=751167 dirtied=442 written=9865
                     ->  Bitmap Heap Scan on lineitem  (cost=48649.10..1159261.73 rows=2304442 width=12) (actual time=1624.961..10196.398 rows=2247378 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=658959
                           Buffers: shared hit=281259 read=383846 dirtied=442 written=9488
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48072.99 rows=2304442 width=0) (actual time=1270.777..1270.777 rows=2269909 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-02-01'::date) AND (l_shipdate < '1995-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6146 written=11
 Planning time: 3.027 ms
 Execution time: 25725.024 ms
(38 rows)

drop view revenue22;
DROP VIEW
COMMIT;
COMMIT