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 >= '1996-09-01'
		and l_shipdate < date'1996-09-01' + 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=2379417.33..2384515.03 rows=3749 width=79) (actual time=34895.374..34895.383 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue16.supplier_no)
   Buffers: shared hit=399473 read=931073 written=232
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1181063.91..1181063.92 rows=1 width=8) (actual time=16469.423..16469.423 rows=1 loops=1)
           Buffers: shared hit=248467 read=415878 written=222
           ->  HashAggregate  (cost=1180979.55..1181017.04 rows=3749 width=12) (actual time=16379.306..16451.529 rows=100000 loops=1)
                 Buffers: shared hit=248467 read=415878 written=222
                 ->  Bitmap Heap Scan on lineitem  (cost=48043.68..1158223.60 rows=2275595 width=12) (actual time=2456.974..12447.461 rows=2249057 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=248467 read=415878 written=222
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47474.78 rows=2275595 width=0) (actual time=1990.309..1990.309 rows=2269346 loops=1)
                             Index Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6142
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.049..43.788 rows=67992 loops=1)
         Buffers: shared hit=1855
   ->  Sort  (cost=1198353.41..1198362.79 rows=3749 width=12) (actual time=34839.717..34839.719 rows=1 loops=1)
         Sort Key: revenue16.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=397618 read=931073 written=232
         ->  Subquery Scan on revenue16  (cost=1198046.52..1198130.87 rows=3749 width=12) (actual time=34792.700..34839.680 rows=1 loops=1)
               Buffers: shared hit=397618 read=931073 written=232
               ->  HashAggregate  (cost=1198046.52..1198093.38 rows=3749 width=12) (actual time=34792.698..34839.676 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=397618 read=931073 written=232
                     ->  Bitmap Heap Scan on lineitem  (cost=48043.68..1158223.60 rows=2275595 width=12) (actual time=1242.095..14263.430 rows=2249057 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=149151 read=515195 written=10
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47474.78 rows=2275595 width=0) (actual time=845.793..845.793 rows=2269346 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-09-01'::date) AND (l_shipdate < '1996-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=6140 read=4
 Total runtime: 34913.568 ms
(33 rows)

drop view revenue16;
DROP VIEW
COMMIT;
COMMIT