BEGIN;
BEGIN
create or replace view revenue28 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-12-01'
		and l_shipdate < date'1995-12-01' + 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,
	revenue28
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue28
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2375994.76..2381091.98 rows=3735 width=79) (actual time=21058.026..21058.031 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue28.supplier_no)
   Buffers: shared hit=661269 read=665539 dirtied=391 written=7692
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179402.78..1179402.79 rows=1 width=8) (actual time=10085.192..10085.192 rows=1 loops=1)
           Buffers: shared hit=318442 read=344712 written=5693
           ->  HashAggregate  (cost=1179318.75..1179356.10 rows=3735 width=12) (actual time=10038.886..10074.158 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=318442 read=344712 written=5693
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47785.17..1156695.72 rows=2262303 width=12) (actual time=1685.405..8136.484 rows=2239957 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=657029
                       Buffers: shared hit=318442 read=344712 written=5693
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47219.60 rows=2262303 width=0) (actual time=1298.200..1298.200 rows=2261842 loops=1)
                             Index Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=474 read=5651 written=392
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.041..6.914 rows=17822 loops=1)
         Buffers: shared hit=500
   ->  Sort  (cost=1196591.67..1196601.01 rows=3735 width=12) (actual time=21049.325..21049.327 rows=1 loops=1)
         Sort Key: revenue28.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=660769 read=665539 dirtied=391 written=7692
         ->  Subquery Scan on revenue28  (cost=1196286.02..1196370.06 rows=3735 width=12) (actual time=21038.006..21049.291 rows=1 loops=1)
               Buffers: shared hit=660769 read=665539 dirtied=391 written=7692
               ->  HashAggregate  (cost=1196286.02..1196332.71 rows=3735 width=12) (actual time=21038.004..21049.287 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=660769 read=665539 dirtied=391 written=7692
                     ->  Bitmap Heap Scan on lineitem  (cost=47785.17..1156695.72 rows=2262303 width=12) (actual time=1895.958..9017.893 rows=2239957 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=657029
                           Buffers: shared hit=342327 read=320827 dirtied=391 written=1999
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47219.60 rows=2262303 width=0) (actual time=1525.517..1525.517 rows=2260348 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-12-01'::date) AND (l_shipdate < '1996-02-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6125 written=11
 Planning time: 3.884 ms
 Execution time: 21069.884 ms
(38 rows)

drop view revenue28;
DROP VIEW
COMMIT;
COMMIT