BEGIN;
BEGIN
create or replace view revenue15 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-08-01'
		and l_shipdate < date'1993-08-01' + 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,
	revenue15
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue15
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374069.72..2379167.31 rows=3759 width=79) (actual time=20233.557..20233.563 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue15.supplier_no)
   Buffers: shared hit=778903 read=549444 written=10912
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178391.09..1178391.10 rows=1 width=8) (actual time=8776.328..8776.328 rows=1 loops=1)
           Buffers: shared hit=392948 read=269867 written=529
           ->  HashAggregate  (cost=1178306.51..1178344.10 rows=3759 width=12) (actual time=8733.795..8766.033 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=392948 read=269867 written=529
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48069.49..1155566.10 rows=2274041 width=12) (actual time=1235.419..6917.716 rows=2246514 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-08-01'::date) AND (l_shipdate < '1993-10-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=656674
                       Buffers: shared hit=392948 read=269867 written=529
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47500.98 rows=2274041 width=0) (actual time=928.890..928.890 rows=2264198 loops=1)
                             Index Cond: ((l_shipdate >= '1993-08-01'::date) AND (l_shipdate < '1993-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6140 written=10
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.032..39.673 rows=99925 loops=1)
         Buffers: shared hit=2717
   ->  Sort  (cost=1195678.33..1195687.73 rows=3759 width=12) (actual time=20183.898..20183.901 rows=1 loops=1)
         Sort Key: revenue15.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=776186 read=549444 written=10912
         ->  Subquery Scan on revenue15  (cost=1195370.54..1195455.12 rows=3759 width=12) (actual time=20171.438..20183.861 rows=1 loops=1)
               Buffers: shared hit=776186 read=549444 written=10912
               ->  HashAggregate  (cost=1195370.54..1195417.53 rows=3759 width=12) (actual time=20171.436..20183.856 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=776186 read=549444 written=10912
                     ->  Bitmap Heap Scan on lineitem  (cost=48069.66..1155574.53 rows=2274058 width=12) (actual time=1713.149..8626.721 rows=2246514 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-08-01'::date) AND (l_shipdate < '1993-10-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=656674
                           Buffers: shared hit=383238 read=279577 written=10383
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47501.15 rows=2274058 width=0) (actual time=1334.016..1334.016 rows=2263412 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-08-01'::date) AND (l_shipdate < '1993-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=838 read=5303 written=648
 Planning time: 3.135 ms
 Execution time: 20245.074 ms
(38 rows)

drop view revenue15;
DROP VIEW
COMMIT;
COMMIT