BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-09-01'
		and l_shipdate < date'1997-09-01' + 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,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2362850.05..2367947.81 rows=3753 width=79) (actual time=23824.301..23824.304 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=929305 read=391841 dirtied=291 written=378
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172856.85..1172856.86 rows=1 width=8) (actual time=10462.164..10462.164 rows=1 loops=1)
           Buffers: shared hit=491434 read=168723 written=64
           ->  HashAggregate  (cost=1172772.41..1172809.94 rows=3753 width=12) (actual time=10359.356..10444.196 rows=100000 loops=1)
                 Buffers: shared hit=491434 read=168723 written=64
                 ->  Bitmap Heap Scan on lineitem  (cost=47785.98..1150221.04 rows=2255137 width=12) (actual time=1734.107..7122.128 rows=2245406 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=491434 read=168723 written=64
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47222.20 rows=2255137 width=0) (actual time=1376.461..1376.461 rows=2249932 loops=1)
                             Index Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6132
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.057..9.964 rows=29990 loops=1)
         Buffers: shared hit=831
   ->  Sort  (cost=1189993.19..1190002.57 rows=3753 width=12) (actual time=23811.279..23811.280 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=928474 read=391841 dirtied=291 written=378
         ->  Subquery Scan on revenue8  (cost=1189685.94..1189770.38 rows=3753 width=12) (actual time=23792.579..23811.249 rows=1 loops=1)
               Buffers: shared hit=928474 read=391841 dirtied=291 written=378
               ->  HashAggregate  (cost=1189685.94..1189732.85 rows=3753 width=12) (actual time=23792.576..23811.244 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=928474 read=391841 dirtied=291 written=378
                     ->  Bitmap Heap Scan on lineitem  (cost=47785.98..1150221.04 rows=2255137 width=12) (actual time=2321.979..9928.245 rows=2245406 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=437040 read=223118 dirtied=291 written=314
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47222.20 rows=2255137 width=0) (actual time=1813.042..1813.042 rows=2249932 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-09-01'::date) AND (l_shipdate < '1997-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=5 read=6129
 Total runtime: 23841.221 ms
(33 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT