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 >= '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,
	revenue3
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue3
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2381386.20..2386483.99 rows=3755 width=79) (actual time=33477.920..33477.923 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=273437 read=1058095 written=1890
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1182053.32..1182053.33 rows=1 width=8) (actual time=16824.421..16824.421 rows=1 loops=1)
           Buffers: shared hit=50880 read=613907
           ->  HashAggregate  (cost=1181968.84..1182006.39 rows=3755 width=12) (actual time=16751.944..16813.297 rows=100000 loops=1)
                 Buffers: shared hit=50880 read=613907
                 ->  Bitmap Heap Scan on lineitem  (cost=47993.51..1159226.71 rows=2274213 width=12) (actual time=1925.973..12832.578 rows=2246578 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-05-01'::date) AND (l_shipdate < '1996-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=50880 read=613907
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47424.96 rows=2274213 width=0) (actual time=1542.531..1542.531 rows=2268510 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=0.00..4791.46 rows=100000 width=71) (actual time=0.063..30.761 rows=71847 loops=1)
         Buffers: shared hit=1957
   ->  Sort  (cost=1199332.87..1199342.26 rows=3755 width=12) (actual time=33439.627..33439.628 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=271480 read=1058095 written=1890
         ->  Subquery Scan on revenue3  (cost=1199025.43..1199109.92 rows=3755 width=12) (actual time=33426.481..33439.591 rows=1 loops=1)
               Buffers: shared hit=271480 read=1058095 written=1890
               ->  HashAggregate  (cost=1199025.43..1199072.37 rows=3755 width=12) (actual time=33426.480..33439.588 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=271480 read=1058095 written=1890
                     ->  Bitmap Heap Scan on lineitem  (cost=47993.51..1159226.71 rows=2274213 width=12) (actual time=2212.945..12584.732 rows=2246578 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-05-01'::date) AND (l_shipdate < '1996-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=220600 read=444188 written=1890
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47424.96 rows=2274213 width=0) (actual time=1852.108..1852.108 rows=2268510 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 hit=9 read=6126
 Total runtime: 33488.263 ms
(33 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT