BEGIN;
BEGIN
create or replace view revenue12 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-02-01'
		and l_shipdate < date'1996-02-01' + 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,
	revenue12
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue12
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2391812.18..2396910.12 rows=3765 width=79) (actual time=41363.903..41363.908 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue12.supplier_no)
   Buffers: shared hit=419483 read=916910
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1187186.90..1187186.91 rows=1 width=8) (actual time=18606.357..18606.357 rows=1 loops=1)
           Buffers: shared hit=135039 read=532311
           ->  HashAggregate  (cost=1187102.19..1187139.84 rows=3765 width=12) (actual time=18525.851..18589.332 rows=100000 loops=1)
                 Buffers: shared hit=135039 read=532311
                 ->  Bitmap Heap Scan on lineitem  (cost=48337.66..1164149.18 rows=2295301 width=12) (actual time=3802.122..14705.334 rows=2243258 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=135039 read=532311
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47763.84 rows=2295301 width=0) (actual time=3259.971..3259.971 rows=2274808 loops=1)
                             Index Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6127
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.137..41.923 rows=61971 loops=1)
         Buffers: shared hit=963 read=729
   ->  Sort  (cost=1204625.27..1204634.68 rows=3765 width=12) (actual time=41311.449..41311.451 rows=1 loops=1)
         Sort Key: revenue12.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=418520 read=916181
         ->  Subquery Scan on revenue12  (cost=1204316.95..1204401.66 rows=3765 width=12) (actual time=41276.905..41311.408 rows=1 loops=1)
               Buffers: shared hit=418520 read=916181
               ->  HashAggregate  (cost=1204316.95..1204364.01 rows=3765 width=12) (actual time=41276.890..41311.390 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=418520 read=916181
                     ->  Bitmap Heap Scan on lineitem  (cost=48337.66..1164149.18 rows=2295301 width=12) (actual time=2539.633..18321.648 rows=2243258 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=283481 read=383870
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47763.84 rows=2295301 width=0) (actual time=2141.485..2141.485 rows=2274808 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-02-01'::date) AND (l_shipdate < '1996-05-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6128
 Total runtime: 41384.434 ms
(33 rows)

drop view revenue12;
DROP VIEW
COMMIT;
COMMIT