BEGIN;
BEGIN
create or replace view revenue16 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-06-01'
		and l_shipdate < date'1995-06-01' + 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,
	revenue16
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue16
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2378148.26..2383245.19 rows=3698 width=79) (actual time=101426.963..101426.965 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue16.supplier_no)
   Buffers: shared hit=441567 read=890545 written=2361
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180557.77..1180557.78 rows=1 width=8) (actual time=51712.344..51712.344 rows=1 loops=1)
           Buffers: shared hit=206792 read=458302 written=83
           ->  HashAggregate  (cost=1180474.56..1180511.54 rows=3698 width=12) (actual time=51646.021..51700.290 rows=100000 loops=1)
                 Buffers: shared hit=206792 read=458302 written=83
                 ->  Bitmap Heap Scan on lineitem  (cost=47309.36..1158056.48 rows=2241808 width=12) (actual time=2582.404..46770.446 rows=2246035 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=206792 read=458302 written=83
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46748.91 rows=2241808 width=0) (actual time=2144.680..2144.680 rows=2268791 loops=1)
                             Index Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6135 written=1
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.076..90.605 rows=70652 loops=1)
         Buffers: shared hit=1923
   ->  Sort  (cost=1197590.48..1197599.72 rows=3698 width=12) (actual time=101324.678..101324.679 rows=1 loops=1)
         Sort Key: revenue16.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=439644 read=890545 written=2361
         ->  Subquery Scan on revenue16  (cost=1197288.12..1197371.33 rows=3698 width=12) (actual time=101278.246..101324.626 rows=1 loops=1)
               Buffers: shared hit=439644 read=890545 written=2361
               ->  HashAggregate  (cost=1197288.12..1197334.35 rows=3698 width=12) (actual time=101278.242..101324.616 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=439644 read=890545 written=2361
                     ->  Bitmap Heap Scan on lineitem  (cost=47309.36..1158056.48 rows=2241808 width=12) (actual time=2268.790..44460.750 rows=2246035 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=232852 read=432243 written=2278
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46748.91 rows=2241808 width=0) (actual time=1843.835..1843.835 rows=2268791 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-06-01'::date) AND (l_shipdate < '1995-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=6136
 Total runtime: 101443.325 ms
(33 rows)

drop view revenue16;
DROP VIEW
COMMIT;
COMMIT