BEGIN;
BEGIN
create or replace view revenue5 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-10-01'
		and l_shipdate < date'1994-10-01' + 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,
	revenue5
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue5
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363124.62..2368222.45 rows=3758 width=79) (actual time=24874.382..24874.386 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue5.supplier_no)
   Buffers: shared hit=736484 read=584280 written=159
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172983.49..1172983.50 rows=1 width=8) (actual time=11971.993..11971.993 rows=1 loops=1)
           Buffers: shared hit=313558 read=346626 written=43
           ->  HashAggregate  (cost=1172898.93..1172936.51 rows=3758 width=12) (actual time=11892.743..11961.069 rows=100000 loops=1)
                 Buffers: shared hit=313558 read=346626 written=43
                 ->  Bitmap Heap Scan on lineitem  (cost=47842.63..1150319.61 rows=2257932 width=12) (actual time=1891.979..8640.370 rows=2243920 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-10-01'::date) AND (l_shipdate < '1994-12-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=313558 read=346626 written=43
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47278.15 rows=2257932 width=0) (actual time=1513.110..1513.110 rows=2248402 loops=1)
                             Index Cond: ((l_shipdate >= '1994-10-01'::date) AND (l_shipdate < '1994-12-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6129
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.095..5.653 rows=13954 loops=1)
         Buffers: shared hit=394 read=1
   ->  Sort  (cost=1190141.12..1190150.52 rows=3758 width=12) (actual time=24867.234..24867.236 rows=1 loops=1)
         Sort Key: revenue5.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=736090 read=584279 written=159
         ->  Subquery Scan on revenue5  (cost=1189833.42..1189917.98 rows=3758 width=12) (actual time=24820.659..24867.196 rows=1 loops=1)
               Buffers: shared hit=736090 read=584279 written=159
               ->  HashAggregate  (cost=1189833.42..1189880.40 rows=3758 width=12) (actual time=24820.657..24867.192 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=736090 read=584279 written=159
                     ->  Bitmap Heap Scan on lineitem  (cost=47842.63..1150319.61 rows=2257932 width=12) (actual time=2281.215..9393.329 rows=2243920 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-10-01'::date) AND (l_shipdate < '1994-12-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=422532 read=237653 written=116
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47278.15 rows=2257932 width=0) (actual time=1881.376..1881.376 rows=2248402 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-10-01'::date) AND (l_shipdate < '1994-12-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6130
 Total runtime: 24889.118 ms
(33 rows)

drop view revenue5;
DROP VIEW
COMMIT;
COMMIT