BEGIN;
BEGIN
create or replace view revenue22 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-04-01'
		and l_shipdate < date'1996-04-01' + 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,
	revenue22
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue22
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2378782.14..2383878.65 rows=3670 width=79) (actual time=93374.544..93374.549 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue22.supplier_no)
   Buffers: shared hit=536106 read=795889 written=72
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1180930.01..1180930.02 rows=1 width=8) (actual time=43821.948..43821.948 rows=1 loops=1)
           Buffers: shared hit=288931 read=376505
           ->  HashAggregate  (cost=1180847.44..1180884.14 rows=3670 width=12) (actual time=43756.088..43810.406 rows=100000 loops=1)
                 Buffers: shared hit=288931 read=376505
                 ->  Bitmap Heap Scan on lineitem  (cost=46976.74..1158574.36 rows=2227308 width=12) (actual time=2912.021..39025.414 rows=2246905 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=288931 read=376505
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46419.91 rows=2227308 width=0) (actual time=2439.937..2439.937 rows=2271021 loops=1)
                             Index Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6135
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.119..29.529 rows=40980 loops=1)
         Buffers: shared hit=1121 read=1
   ->  Sort  (cost=1197852.11..1197861.29 rows=3670 width=12) (actual time=93339.094..93339.096 rows=1 loops=1)
         Sort Key: revenue22.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=534985 read=795888 written=72
         ->  Subquery Scan on revenue22  (cost=1197552.25..1197634.82 rows=3670 width=12) (actual time=93329.170..93339.054 rows=1 loops=1)
               Buffers: shared hit=534985 read=795888 written=72
               ->  HashAggregate  (cost=1197552.25..1197598.12 rows=3670 width=12) (actual time=93329.168..93339.049 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=534985 read=795888 written=72
                     ->  Bitmap Heap Scan on lineitem  (cost=46976.74..1158574.36 rows=2227308 width=12) (actual time=2730.093..44382.282 rows=2246905 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=246054 read=419383 written=72
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46419.91 rows=2227308 width=0) (actual time=2347.197..2347.197 rows=2271021 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6136
 Total runtime: 93388.364 ms
(33 rows)

drop view revenue22;
DROP VIEW
COMMIT;
COMMIT