BEGIN;
BEGIN
create or replace view revenue6 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-04-01'
		and l_shipdate < date'1995-04-01' + 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,
	revenue6
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue6
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2366157.98..2371256.38 rows=3796 width=79) (actual time=34074.638..34074.648 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=731207 read=590804 dirtied=277 written=707
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1174385.19..1174385.20 rows=1 width=8) (actual time=16027.889..16027.889 rows=1 loops=1)
           Buffers: shared hit=294928 read=364949 written=78
           ->  HashAggregate  (cost=1174299.78..1174337.74 rows=3796 width=12) (actual time=15930.649..16009.609 rows=100000 loops=1)
                 Buffers: shared hit=294928 read=364949 written=78
                 ->  Bitmap Heap Scan on lineitem  (cost=48485.43..1151417.24 rows=2288254 width=12) (actual time=2151.822..12026.698 rows=2248183 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=294928 read=364949 written=78
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47913.37 rows=2288254 width=0) (actual time=1727.356..1727.356 rows=2252675 loops=1)
                             Index Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6140
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.063..53.908 rows=82932 loops=1)
         Buffers: shared hit=2256
   ->  Sort  (cost=1191772.77..1191782.26 rows=3796 width=12) (actual time=34006.870..34006.871 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=728951 read=590804 dirtied=277 written=707
         ->  Subquery Scan on revenue6  (cost=1191461.69..1191547.10 rows=3796 width=12) (actual time=33997.230..34006.837 rows=1 loops=1)
               Buffers: shared hit=728951 read=590804 dirtied=277 written=707
               ->  HashAggregate  (cost=1191461.69..1191509.14 rows=3796 width=12) (actual time=33997.227..34006.830 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=728951 read=590804 dirtied=277 written=707
                     ->  Bitmap Heap Scan on lineitem  (cost=48485.43..1151417.24 rows=2288254 width=12) (actual time=2828.394..13582.867 rows=2248183 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=434023 read=225855 dirtied=277 written=629
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47913.37 rows=2288254 width=0) (actual time=2424.319..2424.319 rows=2252675 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=15 read=6127 written=25
 Total runtime: 34098.909 ms
(33 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT