BEGIN;
BEGIN
create or replace view revenue19 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-07-01'
		and l_shipdate < date'1997-07-01' + 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,
	revenue19
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue19
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363258.98..2368356.52 rows=3756 width=79) (actual time=18731.521..18731.526 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue19.supplier_no)
   Buffers: shared hit=1024650 read=297699 written=20
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173045.07..1173045.08 rows=1 width=8) (actual time=9516.715..9516.715 rows=1 loops=1)
           Buffers: shared hit=486643 read=174038
           ->  HashAggregate  (cost=1172960.56..1172998.12 rows=3756 width=12) (actual time=9432.817..9506.063 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=486643 read=174038
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47867.46..1150366.52 rows=2259404 width=12) (actual time=1788.348..7180.456 rows=2247022 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=654544
                       Buffers: shared hit=486643 read=174038
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47302.61 rows=2259404 width=0) (actual time=1387.975..1387.975 rows=2251572 loops=1)
                             Index Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6135
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.048..16.280 rows=35977 loops=1)
         Buffers: shared hit=987
   ->  Sort  (cost=1190213.61..1190223.00 rows=3756 width=12) (actual time=18711.542..18711.545 rows=1 loops=1)
         Sort Key: revenue19.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=1023663 read=297699 written=20
         ->  Subquery Scan on revenue19  (cost=1189906.09..1189990.60 rows=3756 width=12) (actual time=18678.483..18711.504 rows=1 loops=1)
               Buffers: shared hit=1023663 read=297699 written=20
               ->  HashAggregate  (cost=1189906.09..1189953.04 rows=3756 width=12) (actual time=18678.482..18711.502 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=1023663 read=297699 written=20
                     ->  Bitmap Heap Scan on lineitem  (cost=47867.46..1150366.52 rows=2259404 width=12) (actual time=1961.453..7282.292 rows=2247022 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=654544
                           Buffers: shared hit=537020 read=123661 written=20
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47302.61 rows=2259404 width=0) (actual time=1549.462..1549.462 rows=2251572 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-07-01'::date) AND (l_shipdate < '1997-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6135
 Planning time: 2.922 ms
 Execution time: 18748.458 ms
(38 rows)

drop view revenue19;
DROP VIEW
COMMIT;
COMMIT