BEGIN;
BEGIN
create or replace view revenue1 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-04-01'
		and l_shipdate < date'1994-04-01' + 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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2376972.75..2382070.59 rows=3758 width=79) (actual time=23044.732..23044.737 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=528825 read=799781 written=6160
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179854.86..1179854.87 rows=1 width=8) (actual time=10759.664..10759.664 rows=1 loops=1)
           Buffers: shared hit=270085 read=393414 written=400
           ->  HashAggregate  (cost=1179770.30..1179807.88 rows=3758 width=12) (actual time=10685.131..10741.703 rows=100000 loops=1)
                 Buffers: shared hit=270085 read=393414 written=400
                 ->  Bitmap Heap Scan on lineitem  (cost=47994.68..1157050.45 rows=2271985 width=12) (actual time=1427.660..7870.436 rows=2245609 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=270085 read=393414 written=400
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47426.68 rows=2271985 width=0) (actual time=1049.323..1049.323 rows=2263601 loops=1)
                             Index Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6132 written=18
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.107..23.830 rows=58899 loops=1)
         Buffers: shared hit=1606 read=1 written=1
   ->  Sort  (cost=1197117.89..1197127.28 rows=3758 width=12) (actual time=23014.850..23014.852 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=527219 read=799780 written=6159
         ->  Subquery Scan on revenue1  (cost=1196810.19..1196894.74 rows=3758 width=12) (actual time=22984.778..23014.820 rows=1 loops=1)
               Buffers: shared hit=527219 read=799780 written=6159
               ->  HashAggregate  (cost=1196810.19..1196857.16 rows=3758 width=12) (actual time=22984.776..23014.816 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=527219 read=799780 written=6159
                     ->  Bitmap Heap Scan on lineitem  (cost=47994.68..1157050.45 rows=2271985 width=12) (actual time=1987.439..9311.259 rows=2245609 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=257134 read=406366 written=5759
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47426.68 rows=2271985 width=0) (actual time=1609.872..1609.872 rows=2263601 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-04-01'::date) AND (l_shipdate < '1994-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=655 read=5480 written=1459
 Total runtime: 23058.103 ms
(33 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT