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 >= '1993-02-01'
		and l_shipdate < date'1993-02-01' + 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=2378312.91..2383410.24 rows=3742 width=79) (actual time=18505.477..18505.481 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=795183 read=535689 dirtied=624 written=801
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180553.10..1180553.11 rows=1 width=8) (actual time=9496.451..9496.451 rows=1 loops=1)
           Buffers: shared hit=406480 read=258220 written=593
           ->  HashAggregate  (cost=1180468.90..1180506.32 rows=3742 width=12) (actual time=9420.148..9486.222 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=406480 read=258220 written=593
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47808.48..1157823.13 rows=2264577 width=12) (actual time=1579.635..6882.813 rows=2250533 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=658554
                       Buffers: shared hit=406480 read=258220 written=593
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47242.34 rows=2264577 width=0) (actual time=1219.278..1219.278 rows=2270453 loops=1)
                             Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6146 written=4
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..21.482 rows=53897 loops=1)
         Buffers: shared hit=1472
   ->  Sort  (cost=1197759.51..1197768.86 rows=3742 width=12) (actual time=18478.624..18478.625 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=793711 read=535689 dirtied=624 written=801
         ->  Subquery Scan on revenue3  (cost=1197453.23..1197537.43 rows=3742 width=12) (actual time=18438.384..18478.593 rows=1 loops=1)
               Buffers: shared hit=793711 read=535689 dirtied=624 written=801
               ->  HashAggregate  (cost=1197453.23..1197500.01 rows=3742 width=12) (actual time=18438.383..18478.589 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=793711 read=535689 dirtied=624 written=801
                     ->  Bitmap Heap Scan on lineitem  (cost=47808.48..1157823.13 rows=2264577 width=12) (actual time=1616.291..7126.061 rows=2250533 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=658554
                           Buffers: shared hit=387231 read=277469 dirtied=624 written=208
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47242.34 rows=2264577 width=0) (actual time=1256.441..1256.441 rows=2270453 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6144 written=1
 Planning time: 2.292 ms
 Execution time: 18517.556 ms
(38 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT