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 >= '1997-06-01'
		and l_shipdate < date'1997-06-01' + 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=2367138.58..2372237.05 rows=3818 width=79) (actual time=19592.581..19592.586 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=837983 read=483793 written=2
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1174837.39..1174837.40 rows=1 width=8) (actual time=8899.387..8899.387 rows=1 loops=1)
           Buffers: shared hit=410344 read=249955
           ->  HashAggregate  (cost=1174751.48..1174789.66 rows=3818 width=12) (actual time=8852.778..8888.563 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=410344 read=249955
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48688.93..1151769.66 rows=2298182 width=12) (actual time=1209.709..6896.565 rows=2246170 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=654165
                       Buffers: shared hit=410344 read=249955
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48114.39 rows=2298182 width=0) (actual time=935.944..935.944 rows=2250638 loops=1)
                             Index Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6132
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.032..14.407 rows=42993 loops=1)
         Buffers: shared hit=1178
   ->  Sort  (cost=1192300.89..1192310.44 rows=3818 width=12) (actual time=19573.764..19573.766 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=836805 read=483793 written=2
         ->  Subquery Scan on revenue8  (cost=1191987.85..1192073.75 rows=3818 width=12) (actual time=19560.549..19573.730 rows=1 loops=1)
               Buffers: shared hit=836805 read=483793 written=2
               ->  HashAggregate  (cost=1191987.85..1192035.57 rows=3818 width=12) (actual time=19560.547..19573.724 rows=1 loops=1)
                     Group Key: lineitem.l_suppkey
                     Filter: (sum((lineitem.l_extendedprice * (1::double precision - lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=836805 read=483793 written=2
                     ->  Bitmap Heap Scan on lineitem  (cost=48688.93..1151769.66 rows=2298182 width=12) (actual time=1804.705..8230.309 rows=2246170 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=654165
                           Buffers: shared hit=426461 read=233838 written=2
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48114.39 rows=2298182 width=0) (actual time=1407.585..1407.585 rows=2250638 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6134
 Planning time: 2.796 ms
 Execution time: 19603.874 ms
(38 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT