BEGIN;
BEGIN
create or replace view revenue13 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-09-01'
		and l_shipdate < date'1995-09-01' + 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,
	revenue13
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue13
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2380782.26..2385878.39 rows=3662 width=79) (actual time=17618.786..17618.790 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue13.supplier_no)
   Buffers: shared hit=860687 read=475436 dirtied=384 written=4226
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1181933.60..1181933.61 rows=1 width=8) (actual time=8695.569..8695.569 rows=1 loops=1)
           Buffers: shared hit=395416 read=271316 dirtied=384 written=4217
           ->  HashAggregate  (cost=1181851.20..1181887.82 rows=3662 width=12) (actual time=8629.032..8679.674 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=395416 read=271316 dirtied=384 written=4217
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=46929.18..1159587.19 rows=2226401 width=12) (actual time=1166.546..6627.171 rows=2247372 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=660593
                       Buffers: shared hit=395416 read=271316 dirtied=384 written=4217
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46372.58 rows=2226401 width=0) (actual time=904.578..904.578 rows=2274550 loops=1)
                             Index Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..44.430 rows=97885 loops=1)
         Buffers: shared hit=2658 read=1
   ->  Sort  (cost=1198848.36..1198857.52 rows=3662 width=12) (actual time=17560.162..17560.163 rows=1 loops=1)
         Sort Key: revenue13.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=858029 read=475435 dirtied=384 written=4226
         ->  Subquery Scan on revenue13  (cost=1198549.21..1198631.60 rows=3662 width=12) (actual time=17543.411..17560.126 rows=1 loops=1)
               Buffers: shared hit=858029 read=475435 dirtied=384 written=4226
               ->  HashAggregate  (cost=1198549.21..1198594.98 rows=3662 width=12) (actual time=17543.409..17560.122 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=858029 read=475435 dirtied=384 written=4226
                     ->  Bitmap Heap Scan on lineitem  (cost=46929.18..1159587.19 rows=2226401 width=12) (actual time=1439.021..6925.532 rows=2247372 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=660593
                           Buffers: shared hit=462613 read=204119 written=9
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46372.58 rows=2226401 width=0) (actual time=1140.749..1140.749 rows=2274550 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-09-01'::date) AND (l_shipdate < '1995-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1 read=6138 written=5
 Planning time: 2.504 ms
 Execution time: 17629.899 ms
(38 rows)

drop view revenue13;
DROP VIEW
COMMIT;
COMMIT