BEGIN;
BEGIN
create or replace view revenue1 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-12-01'
		and l_shipdate < date'1996-12-01' + 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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374392.38..2379490.00 rows=3744 width=79) (actual time=42712.742..42712.745 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=456490 read=870465 dirtied=373 written=21169
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178584.31..1178584.32 rows=1 width=8) (actual time=24462.091..24462.091 rows=1 loops=1)
           Buffers: shared hit=202557 read=460768 dirtied=373 written=15001
           ->  HashAggregate  (cost=1178500.07..1178537.51 rows=3744 width=12) (actual time=24393.905..24449.766 rows=100000 loops=1)
                 Buffers: shared hit=202557 read=460768 dirtied=373 written=15001
                 ->  Bitmap Heap Scan on lineitem  (cost=47910.27..1155831.35 rows=2266872 width=12) (actual time=2423.402..20282.203 rows=2245866 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=202557 read=460768 dirtied=373 written=15001
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47343.55 rows=2266872 width=0) (actual time=1960.726..1960.726 rows=2263838 loops=1)
                             Index Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1112 read=5024 written=486
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.099..5.133 rows=10906 loops=1)
         Buffers: shared hit=303 read=1
   ->  Sort  (cost=1195808.06..1195817.42 rows=3744 width=12) (actual time=42706.383..42706.383 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=456187 read=870464 dirtied=373 written=21169
         ->  Subquery Scan on revenue1  (cost=1195501.61..1195585.85 rows=3744 width=12) (actual time=42679.843..42706.351 rows=1 loops=1)
               Buffers: shared hit=456187 read=870464 dirtied=373 written=21169
               ->  HashAggregate  (cost=1195501.61..1195548.41 rows=3744 width=12) (actual time=42679.841..42706.347 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=456187 read=870464 dirtied=373 written=21169
                     ->  Bitmap Heap Scan on lineitem  (cost=47910.27..1155831.35 rows=2266872 width=12) (actual time=2336.602..14614.361 rows=2245866 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=253630 read=409696 written=6168
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47343.55 rows=2266872 width=0) (actual time=1740.948..1740.948 rows=2261649 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-12-01'::date) AND (l_shipdate < '1997-03-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2113 read=4024
 Total runtime: 42728.458 ms
(33 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT