BEGIN;
BEGIN
create or replace view revenue14 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-10-01'
		and l_shipdate < date'1993-10-01' + 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,
	revenue14
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue14
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374503.25..2379600.44 rows=3715 width=79) (actual time=48096.995..48096.999 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue14.supplier_no)
   Buffers: shared hit=475651 read=851765 written=5079
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178714.26..1178714.27 rows=1 width=8) (actual time=22173.196..22173.196 rows=1 loops=1)
           Buffers: shared hit=216255 read=447159 written=5079
           ->  HashAggregate  (cost=1178630.67..1178667.82 rows=3715 width=12) (actual time=22092.731..22154.024 rows=100000 loops=1)
                 Buffers: shared hit=216255 read=447159 written=5079
                 ->  Bitmap Heap Scan on lineitem  (cost=47473.22..1156158.09 rows=2247258 width=12) (actual time=2631.994..18235.133 rows=2246324 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=216255 read=447159 written=5079
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46911.41 rows=2247258 width=0) (actual time=2223.973..2223.973 rows=2263757 loops=1)
                             Index Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6134
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.234..13.874 rows=20959 loops=1)
         Buffers: shared hit=587
   ->  Sort  (cost=1195788.98..1195798.27 rows=3715 width=12) (actual time=48079.387..48079.388 rows=1 loops=1)
         Sort Key: revenue14.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=475064 read=851765 written=5079
         ->  Subquery Scan on revenue14  (cost=1195485.11..1195568.70 rows=3715 width=12) (actual time=48044.895..48079.342 rows=1 loops=1)
               Buffers: shared hit=475064 read=851765 written=5079
               ->  HashAggregate  (cost=1195485.11..1195531.55 rows=3715 width=12) (actual time=48044.892..48079.336 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=475064 read=851765 written=5079
                     ->  Bitmap Heap Scan on lineitem  (cost=47473.22..1156158.09 rows=2247258 width=12) (actual time=2382.262..21496.151 rows=2246324 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=258809 read=404606
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46911.41 rows=2247258 width=0) (actual time=2035.908..2035.908 rows=2263757 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-10-01'::date) AND (l_shipdate < '1993-12-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6135
 Total runtime: 48114.831 ms
(33 rows)

drop view revenue14;
DROP VIEW
COMMIT;
COMMIT