BEGIN;
BEGIN
create or replace view revenue15 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-02-01'
		and l_shipdate < date'1994-02-01' + 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,
	revenue15
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue15
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2379417.33..2384515.03 rows=3749 width=79) (actual time=35678.735..35678.737 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue15.supplier_no)
   Buffers: shared hit=378751 read=948447 written=8044
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1181063.91..1181063.92 rows=1 width=8) (actual time=20289.005..20289.005 rows=1 loops=1)
           Buffers: shared hit=65275 read=598211 written=16
           ->  HashAggregate  (cost=1180979.55..1181017.04 rows=3749 width=12) (actual time=20189.021..20272.051 rows=100000 loops=1)
                 Buffers: shared hit=65275 read=598211 written=16
                 ->  Bitmap Heap Scan on lineitem  (cost=48043.68..1158223.60 rows=2275595 width=12) (actual time=2497.352..16015.529 rows=2244961 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-02-01'::date) AND (l_shipdate < '1994-05-02 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=65275 read=598211 written=16
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47474.78 rows=2275595 width=0) (actual time=2024.765..2024.765 rows=2265162 loops=1)
                             Index Cond: ((l_shipdate >= '1994-02-01'::date) AND (l_shipdate < '1994-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6129
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.076..5.427 rows=8001 loops=1)
         Buffers: shared hit=224 read=1
   ->  Sort  (cost=1198353.41..1198362.79 rows=3749 width=12) (actual time=35671.957..35671.957 rows=1 loops=1)
         Sort Key: revenue15.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=378527 read=948446 written=8044
         ->  Subquery Scan on revenue15  (cost=1198046.52..1198130.87 rows=3749 width=12) (actual time=35655.483..35671.920 rows=1 loops=1)
               Buffers: shared hit=378527 read=948446 written=8044
               ->  HashAggregate  (cost=1198046.52..1198093.38 rows=3749 width=12) (actual time=35655.481..35671.916 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=378527 read=948446 written=8044
                     ->  Bitmap Heap Scan on lineitem  (cost=48043.68..1158223.60 rows=2275595 width=12) (actual time=1640.530..11568.661 rows=2244961 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-02-01'::date) AND (l_shipdate < '1994-05-02 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=313252 read=350235 written=8028
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47474.78 rows=2275595 width=0) (actual time=1252.595..1252.595 rows=2265162 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-02-01'::date) AND (l_shipdate < '1994-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=947 read=5185 written=3152
 Total runtime: 35698.144 ms
(33 rows)

drop view revenue15;
DROP VIEW
COMMIT;
COMMIT