BEGIN;
BEGIN
create or replace view revenue5 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-03-01'
		and l_shipdate < date'1996-03-01' + 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,
	revenue5
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue5
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2361183.68..2366281.22 rows=3756 width=79) (actual time=21904.386..21904.390 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue5.supplier_no)
   Buffers: shared hit=478727 read=839719 dirtied=584 written=24516
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172007.38..1172007.39 rows=1 width=8) (actual time=11453.757..11453.757 rows=1 loops=1)
           Buffers: shared hit=80930 read=577718 dirtied=584 written=24515
           ->  HashAggregate  (cost=1171922.87..1171960.43 rows=3756 width=12) (actual time=11415.464..11443.492 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=80930 read=577718 dirtied=584 written=24515
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47891.55..1149328.74 rows=2259413 width=12) (actual time=1808.474..9607.292 rows=2244430 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=652517
                       Buffers: shared hit=80930 read=577718 dirtied=584 written=24515
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47326.70 rows=2259413 width=0) (actual time=1425.508..1425.508 rows=2246637 loops=1)
                             Index Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6131
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.078..13.473 rows=41964 loops=1)
         Buffers: shared hit=1142 read=8 written=1
   ->  Sort  (cost=1189175.99..1189185.38 rows=3756 width=12) (actual time=21887.029..21887.031 rows=1 loops=1)
         Sort Key: revenue5.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=477585 read=839711 dirtied=584 written=24515
         ->  Subquery Scan on revenue5  (cost=1188868.47..1188952.98 rows=3756 width=12) (actual time=21868.984..21886.996 rows=1 loops=1)
               Buffers: shared hit=477585 read=839711 dirtied=584 written=24515
               ->  HashAggregate  (cost=1188868.47..1188915.42 rows=3756 width=12) (actual time=21868.981..21886.990 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=477585 read=839711 dirtied=584 written=24515
                     ->  Bitmap Heap Scan on lineitem  (cost=47891.55..1149328.74 rows=2259413 width=12) (actual time=1694.465..7755.797 rows=2244430 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=652517
                           Buffers: shared hit=396655 read=261993
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47326.70 rows=2259413 width=0) (actual time=1310.633..1310.633 rows=2246637 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6131
 Planning time: 2.481 ms
 Execution time: 21926.913 ms
(38 rows)

drop view revenue5;
DROP VIEW
COMMIT;
COMMIT