BEGIN;
BEGIN
create or replace view revenue9 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-01-01'
		and l_shipdate < date'1994-01-01' + 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,
	revenue9
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue9
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2367451.35..2372547.71 rows=3677 width=79) (actual time=20929.632..20929.636 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=700680 read=623237 dirtied=481 written=12764
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1175298.06..1175298.07 rows=1 width=8) (actual time=11484.916..11484.916 rows=1 loops=1)
           Buffers: shared hit=382411 read=279241 written=12598
           ->  HashAggregate  (cost=1175215.32..1175252.09 rows=3677 width=12) (actual time=11443.098..11474.508 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=382411 read=279241 written=12598
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=46902.05..1153032.41 rows=2218291 width=12) (actual time=3413.454..9625.521 rows=2242078 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=655522
                       Buffers: shared hit=382411 read=279241 written=12598
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46347.48 rows=2218291 width=0) (actual time=2915.704..2915.704 rows=2258823 loops=1)
                             Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=762 read=5368 written=434
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.035..9.034 rows=21986 loops=1)
         Buffers: shared hit=613
   ->  Sort  (cost=1192153.00..1192162.19 rows=3677 width=12) (actual time=20918.278..20918.280 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=700067 read=623237 dirtied=481 written=12764
         ->  Subquery Scan on revenue9  (cost=1191852.51..1191935.24 rows=3677 width=12) (actual time=20895.464..20918.238 rows=1 loops=1)
               Buffers: shared hit=700067 read=623237 dirtied=481 written=12764
               ->  HashAggregate  (cost=1191852.51..1191898.47 rows=3677 width=12) (actual time=20895.463..20918.235 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=700067 read=623237 dirtied=481 written=12764
                     ->  Bitmap Heap Scan on lineitem  (cost=46902.05..1153032.41 rows=2218291 width=12) (actual time=1329.168..7510.774 rows=2242078 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=655522
                           Buffers: shared hit=317656 read=343996 dirtied=481 written=166
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46347.48 rows=2218291 width=0) (actual time=1013.973..1013.973 rows=2257759 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6130
 Planning time: 2.363 ms
 Execution time: 20954.347 ms
(38 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT