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 >= '1996-07-01'
		and l_shipdate < date'1996-07-01' + 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=2374077.77..2379175.45 rows=3765 width=79) (actual time=21366.588..21366.594 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue15.supplier_no)
   Buffers: shared hit=725843 read=600168 written=7557
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178387.92..1178387.93 rows=1 width=8) (actual time=9851.041..9851.041 rows=1 loops=1)
           Buffers: shared hit=375199 read=286975 written=252
           ->  HashAggregate  (cost=1178303.21..1178340.86 rows=3765 width=12) (actual time=9804.106..9840.075 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=375199 read=286975 written=252
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48136.51..1155532.53 rows=2277068 width=12) (actual time=1385.877..7782.803 rows=2243755 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=656040
                       Buffers: shared hit=375199 read=286975 written=252
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47567.25 rows=2277068 width=0) (actual time=1063.673..1063.673 rows=2261531 loops=1)
                             Index Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6134 written=9
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.045..25.723 rows=60982 loops=1)
         Buffers: shared hit=1663
   ->  Sort  (cost=1195689.55..1195698.96 rows=3765 width=12) (actual time=21334.347..21334.350 rows=1 loops=1)
         Sort Key: revenue15.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=724180 read=600168 written=7557
         ->  Subquery Scan on revenue15  (cost=1195381.22..1195465.93 rows=3765 width=12) (actual time=21310.791..21334.309 rows=1 loops=1)
               Buffers: shared hit=724180 read=600168 written=7557
               ->  HashAggregate  (cost=1195381.22..1195428.28 rows=3765 width=12) (actual time=21310.789..21334.304 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=724180 read=600168 written=7557
                     ->  Bitmap Heap Scan on lineitem  (cost=48136.51..1155532.53 rows=2277068 width=12) (actual time=2021.402..9485.073 rows=2243755 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=656040
                           Buffers: shared hit=348981 read=313193 written=7305
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47567.25 rows=2277068 width=0) (actual time=1537.950..1537.950 rows=2260310 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=385 read=5749 written=314
 Planning time: 4.344 ms
 Execution time: 21380.972 ms
(38 rows)

drop view revenue15;
DROP VIEW
COMMIT;
COMMIT