BEGIN;
BEGIN
create or replace view revenue18 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-05-01'
		and l_shipdate < date'1994-05-01' + 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,
	revenue18
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue18
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2386083.76..2391180.94 rows=3715 width=79) (actual time=60542.495..60542.501 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue18.supplier_no)
   Buffers: shared hit=753055 read=583483 written=205
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1184461.51..1184461.52 rows=1 width=8) (actual time=32550.562..32550.562 rows=1 loops=1)
           Buffers: shared hit=352492 read=314797 written=47
           ->  HashAggregate  (cost=1184377.92..1184415.07 rows=3715 width=12) (actual time=32474.877..32538.032 rows=100000 loops=1)
                 Buffers: shared hit=352492 read=314797 written=47
                 ->  Bitmap Heap Scan on lineitem  (cost=47590.77..1161790.66 rows=2258726 width=12) (actual time=2488.220..27921.373 rows=2247373 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=352492 read=314797 written=47
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47026.09 rows=2258726 width=0) (actual time=1976.157..1976.157 rows=2276624 loops=1)
                             Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=3727 read=2411
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.093..32.997 rows=71902 loops=1)
         Buffers: shared hit=1958 read=1
   ->  Sort  (cost=1201622.24..1201631.52 rows=3715 width=12) (actual time=60501.175..60501.178 rows=1 loops=1)
         Sort Key: revenue18.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=751097 read=583482 written=205
         ->  Subquery Scan on revenue18  (cost=1201318.37..1201401.95 rows=3715 width=12) (actual time=60484.603..60501.131 rows=1 loops=1)
               Buffers: shared hit=751097 read=583482 written=205
               ->  HashAggregate  (cost=1201318.37..1201364.80 rows=3715 width=12) (actual time=60484.601..60501.127 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=751097 read=583482 written=205
                     ->  Bitmap Heap Scan on lineitem  (cost=47590.77..1161790.66 rows=2258726 width=12) (actual time=2584.025..23597.051 rows=2247373 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=398605 read=268685 written=158
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47026.09 rows=2258726 width=0) (actual time=2183.162..2183.162 rows=2276624 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6139
 Total runtime: 60556.986 ms
(33 rows)

drop view revenue18;
DROP VIEW
COMMIT;
COMMIT