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 >= '1997-05-01'
		and l_shipdate < date'1997-05-01' + 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=2360272.89..2365370.00 rows=3710 width=79) (actual time=24887.542..24887.545 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=860868 read=460818 dirtied=251 written=835
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171666.06..1171666.07 rows=1 width=8) (actual time=10441.383..10441.383 rows=1 loops=1)
           Buffers: shared hit=497943 read=162418 written=64
           ->  HashAggregate  (cost=1171582.59..1171619.69 rows=3710 width=12) (actual time=10359.241..10430.595 rows=100000 loops=1)
                 Buffers: shared hit=497943 read=162418 written=64
                 ->  Bitmap Heap Scan on lineitem  (cost=47238.59..1149288.19 rows=2229440 width=12) (actual time=1613.453..7022.629 rows=2248039 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=497943 read=162418 written=64
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46681.23 rows=2229440 width=0) (actual time=1278.121..1278.121 rows=2252515 loops=1)
                             Index Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.067..17.218 rows=34927 loops=1)
         Buffers: shared hit=106 read=857
   ->  Sort  (cost=1188606.82..1188616.09 rows=3710 width=12) (actual time=24866.623..24866.624 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=860762 read=459961 dirtied=251 written=835
         ->  Subquery Scan on revenue6  (cost=1188303.39..1188386.86 rows=3710 width=12) (actual time=24838.210..24866.592 rows=1 loops=1)
               Buffers: shared hit=860762 read=459961 dirtied=251 written=835
               ->  HashAggregate  (cost=1188303.39..1188349.76 rows=3710 width=12) (actual time=24838.208..24866.588 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=860762 read=459961 dirtied=251 written=835
                     ->  Bitmap Heap Scan on lineitem  (cost=47238.59..1149288.19 rows=2229440 width=12) (actual time=2227.753..10640.671 rows=2248039 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=362819 read=297543 dirtied=251 written=771
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46681.23 rows=2229440 width=0) (actual time=1833.191..1833.191 rows=2252515 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-05-01'::date) AND (l_shipdate < '1997-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=13 read=6128
 Total runtime: 24903.231 ms
(33 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT