BEGIN;
BEGIN
create or replace view revenue17 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-06-01'
		and l_shipdate < date'1994-06-01' + 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,
	revenue17
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue17
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374385.83..2379483.45 rows=3744 width=79) (actual time=37564.477..37564.480 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue17.supplier_no)
   Buffers: shared hit=542914 read=785733 written=363
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178581.35..1178581.36 rows=1 width=8) (actual time=14842.456..14842.456 rows=1 loops=1)
           Buffers: shared hit=406268 read=257075
           ->  HashAggregate  (cost=1178497.11..1178534.55 rows=3744 width=12) (actual time=14705.160..14825.696 rows=100000 loops=1)
                 Buffers: shared hit=406268 read=257075
                 ->  Bitmap Heap Scan on lineitem  (cost=47909.41..1155829.23 rows=2266788 width=12) (actual time=2195.372..10774.024 rows=2248001 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=406268 read=257075
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47342.71 rows=2266788 width=0) (actual time=1738.066..1738.066 rows=2263735 loops=1)
                             Index Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6140
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.076..51.166 rows=71981 loops=1)
         Buffers: shared hit=1960
   ->  Sort  (cost=1195804.47..1195813.83 rows=3744 width=12) (actual time=37501.602..37501.602 rows=1 loops=1)
         Sort Key: revenue17.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=540954 read=785733 written=363
         ->  Subquery Scan on revenue17  (cost=1195498.02..1195582.26 rows=3744 width=12) (actual time=37433.766..37501.551 rows=1 loops=1)
               Buffers: shared hit=540954 read=785733 written=363
               ->  HashAggregate  (cost=1195498.02..1195544.82 rows=3744 width=12) (actual time=37433.764..37501.547 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=540954 read=785733 written=363
                     ->  Bitmap Heap Scan on lineitem  (cost=47909.41..1155829.23 rows=2266788 width=12) (actual time=2618.743..18207.363 rows=2248001 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=134686 read=528658 written=363
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47342.71 rows=2266788 width=0) (actual time=1994.015..1994.015 rows=2263735 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6138
 Total runtime: 37586.419 ms
(33 rows)

drop view revenue17;
DROP VIEW
COMMIT;
COMMIT