BEGIN;
BEGIN
create or replace view revenue1 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-05-01'
		and l_shipdate < date'1996-05-01' + 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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2371896.35..2376993.68 rows=3742 width=79) (actual time=18091.008..18091.012 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=618761 read=707495 written=264
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1177351.58..1177351.59 rows=1 width=8) (actual time=8110.670..8110.670 rows=1 loops=1)
           Buffers: shared hit=365683 read=296467 written=241
           ->  HashAggregate  (cost=1177267.38..1177304.80 rows=3742 width=12) (actual time=8063.938..8100.417 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=365683 read=296467 written=241
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47842.01..1154639.63 rows=2262775 width=12) (actual time=1148.990..6241.125 rows=2246438 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-05-01'::date) AND (l_shipdate < '1996-07-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=656016
                       Buffers: shared hit=365683 read=296467 written=241
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47276.32 rows=2262775 width=0) (actual time=890.631..890.631 rows=2259408 loops=1)
                             Index Cond: ((l_shipdate >= '1996-05-01'::date) AND (l_shipdate < '1996-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6134
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.037..27.627 rows=71847 loops=1)
         Buffers: shared hit=1956
   ->  Sort  (cost=1194544.47..1194553.83 rows=3742 width=12) (actual time=18056.222..18056.224 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=616805 read=707495 written=264
         ->  Subquery Scan on revenue1  (cost=1194238.20..1194322.39 rows=3742 width=12) (actual time=18048.808..18056.190 rows=1 loops=1)
               Buffers: shared hit=616805 read=707495 written=264
               ->  HashAggregate  (cost=1194238.20..1194284.97 rows=3742 width=12) (actual time=18048.808..18056.188 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=616805 read=707495 written=264
                     ->  Bitmap Heap Scan on lineitem  (cost=47842.01..1154639.63 rows=2262775 width=12) (actual time=1239.683..7931.176 rows=2246438 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-05-01'::date) AND (l_shipdate < '1996-07-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=656016
                           Buffers: shared hit=251122 read=411028 written=23
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47276.32 rows=2262775 width=0) (actual time=958.069..958.069 rows=2259408 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-05-01'::date) AND (l_shipdate < '1996-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6134 written=5
 Planning time: 2.612 ms
 Execution time: 18098.825 ms
(38 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT