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 >= '1995-07-01'
		and l_shipdate < date'1995-07-01' + 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,
	revenue22
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue22
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2378980.80..2384077.67 rows=3711 width=79) (actual time=20458.067..20458.073 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue22.supplier_no)
   Buffers: shared hit=624106 read=707404 written=683
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180941.76..1180941.77 rows=1 width=8) (actual time=10327.614..10327.614 rows=1 loops=1)
           Buffers: shared hit=319085 read=346110 written=291
           ->  HashAggregate  (cost=1180858.27..1180895.38 rows=3711 width=12) (actual time=10251.775..10317.555 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=319085 read=346110 written=291
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47481.74..1158355.66 rows=2250261 width=12) (actual time=1522.347..7588.603 rows=2247583 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=659056
                       Buffers: shared hit=319085 read=346110 written=291
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46919.18 rows=2250261 width=0) (actual time=1214.936..1214.936 rows=2270288 loops=1)
                             Index Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6139 written=9
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.037..16.174 rows=40959 loops=1)
         Buffers: shared hit=1120
   ->  Sort  (cost=1198038.74..1198048.02 rows=3711 width=12) (actual time=20437.755..20437.758 rows=1 loops=1)
         Sort Key: revenue22.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=622986 read=707404 written=683
         ->  Subquery Scan on revenue22  (cost=1197735.22..1197818.72 rows=3711 width=12) (actual time=20431.048..20437.721 rows=1 loops=1)
               Buffers: shared hit=622986 read=707404 written=683
               ->  HashAggregate  (cost=1197735.22..1197781.61 rows=3711 width=12) (actual time=20431.046..20437.718 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=622986 read=707404 written=683
                     ->  Bitmap Heap Scan on lineitem  (cost=47481.74..1158355.66 rows=2250261 width=12) (actual time=1238.500..8165.822 rows=2247583 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=659056
                           Buffers: shared hit=303901 read=361294 written=392
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46919.18 rows=2250261 width=0) (actual time=951.687..951.687 rows=2270288 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-07-01'::date) AND (l_shipdate < '1995-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6139 written=7
 Planning time: 2.965 ms
 Execution time: 20469.625 ms
(38 rows)

drop view revenue22;
DROP VIEW
COMMIT;
COMMIT