BEGIN;
BEGIN
create or replace view revenue0 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-08-01'
		and l_shipdate < date'1996-08-01' + 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,
	revenue0
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue0
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2356193.62..2361290.83 rows=3716 width=79) (actual time=13234.565..13234.572 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=736002 read=582259
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1169623.06..1169623.07 rows=1 width=8) (actual time=3575.287..3575.287 rows=1 loops=1)
           Buffers: shared hit=657094 read=1190
           ->  HashAggregate  (cost=1169539.45..1169576.61 rows=3716 width=12) (actual time=3544.846..3565.622 rows=100000 loops=1)
                 Buffers: shared hit=657094 read=1190
                 ->  Bitmap Heap Scan on lineitem  (cost=47307.27..1147236.58 rows=2230287 width=12) (actual time=789.103..2334.859 rows=2247173 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=657094 read=1190
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46749.70 rows=2230287 width=0) (actual time=570.862..570.862 rows=2247173 loops=1)
                             Index Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.030..26.157 rows=61965 loops=1)
         Buffers: shared hit=1322 read=370
   ->  Sort  (cost=1186570.56..1186579.85 rows=3716 width=12) (actual time=13202.555..13202.557 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=734680 read=581889
         ->  Subquery Scan on revenue0  (cost=1186266.60..1186350.21 rows=3716 width=12) (actual time=13160.882..13202.514 rows=1 loops=1)
               Buffers: shared hit=734680 read=581889
               ->  HashAggregate  (cost=1186266.60..1186313.05 rows=3716 width=12) (actual time=13160.873..13202.497 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=734680 read=581889
                     ->  Bitmap Heap Scan on lineitem  (cost=47307.27..1147236.58 rows=2230287 width=12) (actual time=902.992..7835.123 rows=2247173 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=77586 read=580699
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46749.70 rows=2230287 width=0) (actual time=683.576..683.576 rows=2247173 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6139
 Total runtime: 13243.590 ms
(33 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT