BEGIN;
BEGIN
create or replace view revenue5 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-08-01'
		and l_shipdate < date'1996-08-01' + 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,
	revenue5
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue5
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2360468.76..2365565.93 rows=3714 width=79) (actual time=30013.134..30013.140 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue5.supplier_no)
   Buffers: shared hit=625655 read=695240 written=28
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171756.78..1171756.79 rows=1 width=8) (actual time=15238.217..15238.217 rows=1 loops=1)
           Buffers: shared hit=281895 read=377706 written=12
           ->  HashAggregate  (cost=1171673.21..1171710.35 rows=3714 width=12) (actual time=15139.425..15217.769 rows=100000 loops=1)
                 Buffers: shared hit=281895 read=377706 written=12
                 ->  Bitmap Heap Scan on lineitem  (cost=47281.96..1149359.91 rows=2231330 width=12) (actual time=1694.634..11091.929 rows=2247146 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=281895 read=377706 written=12
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46724.13 rows=2231330 width=0) (actual time=1293.146..1293.146 rows=2251561 loops=1)
                             Index Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6135 read=3
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.088..27.498 rows=61965 loops=1)
         Buffers: shared hit=1691 read=1
   ->  Sort  (cost=1188711.97..1188721.25 rows=3714 width=12) (actual time=29978.788..29978.790 rows=1 loops=1)
         Sort Key: revenue5.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=623964 read=695239 written=28
         ->  Subquery Scan on revenue5  (cost=1188408.19..1188491.75 rows=3714 width=12) (actual time=29934.319..29978.751 rows=1 loops=1)
               Buffers: shared hit=623964 read=695239 written=28
               ->  HashAggregate  (cost=1188408.19..1188454.61 rows=3714 width=12) (actual time=29934.317..29978.746 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=623964 read=695239 written=28
                     ->  Bitmap Heap Scan on lineitem  (cost=47281.96..1149359.91 rows=2231330 width=12) (actual time=2095.565..11097.349 rows=2247146 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=342069 read=317533 written=16
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46724.13 rows=2231330 width=0) (actual time=1739.292..1739.292 rows=2251561 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1 read=6138
 Total runtime: 30023.786 ms
(33 rows)

drop view revenue5;
DROP VIEW
COMMIT;
COMMIT