BEGIN;
BEGIN
create or replace view revenue3 (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,
	revenue3
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue3
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2379286.68..2384384.21 rows=3755 width=79) (actual time=19990.107..19990.112 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=783727 read=547338 dirtied=270 written=803
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1181002.81..1181002.82 rows=1 width=8) (actual time=9496.688..9496.688 rows=1 loops=1)
           Buffers: shared hit=428592 read=235813 written=441
           ->  HashAggregate  (cost=1180918.32..1180955.87 rows=3755 width=12) (actual time=9442.344..9486.566 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=428592 read=235813 written=441
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48012.92..1158174.56 rows=2274376 width=12) (actual time=1676.132..7008.834 rows=2247770 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=658264
                       Buffers: shared hit=428592 read=235813 written=441
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47444.33 rows=2274376 width=0) (actual time=1282.218..1282.218 rows=2268267 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=2 read=6139 written=1
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..32.706 rows=82932 loops=1)
         Buffers: shared hit=2255
   ->  Sort  (cost=1198283.57..1198292.96 rows=3755 width=12) (actual time=19949.182..19949.184 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=781472 read=547338 dirtied=270 written=803
         ->  Subquery Scan on revenue3  (cost=1197976.14..1198060.63 rows=3755 width=12) (actual time=19944.391..19949.151 rows=1 loops=1)
               Buffers: shared hit=781472 read=547338 dirtied=270 written=803
               ->  HashAggregate  (cost=1197976.14..1198023.08 rows=3755 width=12) (actual time=19944.391..19949.150 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=781472 read=547338 dirtied=270 written=803
                     ->  Bitmap Heap Scan on lineitem  (cost=48012.92..1158174.56 rows=2274376 width=12) (actual time=1711.927..8562.328 rows=2247770 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-04-01'::date) AND (l_shipdate < '1995-06-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=658264
                           Buffers: shared hit=352880 read=311525 dirtied=270 written=362
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47444.33 rows=2274376 width=0) (actual time=1301.994..1301.994 rows=2268267 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 read=6141 written=1
 Planning time: 2.735 ms
 Execution time: 20001.184 ms
(38 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT