BEGIN;
BEGIN
create or replace view revenue6 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-01-01'
		and l_shipdate < date'1994-01-01' + 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,
	revenue6
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue6
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363913.46..2369011.42 rows=3767 width=79) (actual time=76399.171..76399.174 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=1084645 read=233988 written=48
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173348.19..1173348.20 rows=1 width=8) (actual time=38464.828..38464.829 rows=1 loops=1)
           Buffers: shared hit=539542 read=119467
           ->  HashAggregate  (cost=1173263.43..1173301.10 rows=3767 width=12) (actual time=38387.020..38452.341 rows=100000 loops=1)
                 Buffers: shared hit=539542 read=119467
                 ->  Bitmap Heap Scan on lineitem  (cost=48011.03..1150605.67 rows=2265776 width=12) (actual time=3121.431..33517.884 rows=2244196 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=539542 read=119467
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47444.59 rows=2265776 width=0) (actual time=2650.211..2650.211 rows=2248683 loops=1)
                             Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1522 read=4608
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.070..37.219 rows=21986 loops=1)
         Buffers: shared hit=614
   ->  Sort  (cost=1190565.26..1190574.67 rows=3767 width=12) (actual time=76358.024..76358.025 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=1084031 read=233988 written=48
         ->  Subquery Scan on revenue6  (cost=1190256.75..1190341.51 rows=3767 width=12) (actual time=76340.352..76357.993 rows=1 loops=1)
               Buffers: shared hit=1084031 read=233988 written=48
               ->  HashAggregate  (cost=1190256.75..1190303.84 rows=3767 width=12) (actual time=76340.350..76357.990 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=1084031 read=233988 written=48
                     ->  Bitmap Heap Scan on lineitem  (cost=48011.03..1150605.67 rows=2265776 width=12) (actual time=2949.128..33014.226 rows=2244196 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=544489 read=114521 written=48
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47444.59 rows=2265776 width=0) (actual time=2519.953..2519.953 rows=2248683 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-01-01'::date) AND (l_shipdate < '1994-04-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=8 read=6123 written=48
 Total runtime: 76415.671 ms
(33 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT