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 >= '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,
	revenue6
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue6
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2355751.59..2360847.89 rows=3673 width=79) (actual time=21104.654..21104.660 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=721078 read=596625 dirtied=417 written=14045
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1169497.89..1169497.90 rows=1 width=8) (actual time=10643.870..10643.870 rows=1 loops=1)
           Buffers: shared hit=355350 read=303252 dirtied=1 written=4927
           ->  HashAggregate  (cost=1169415.25..1169451.98 rows=3673 width=12) (actual time=10582.055..10633.795 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=355350 read=303252 dirtied=1 written=4927
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=46742.52..1147364.56 rows=2205069 width=12) (actual time=1191.815..7936.744 rows=2240148 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=652477
                       Buffers: shared hit=355350 read=303252 dirtied=1 written=4927
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46191.26 rows=2205069 width=0) (actual time=902.003..902.003 rows=2247002 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=555 read=5570 written=301
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.038..7.410 rows=17822 loops=1)
         Buffers: shared hit=500
   ->  Sort  (cost=1186253.40..1186262.58 rows=3673 width=12) (actual time=21095.600..21095.603 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=720578 read=596625 dirtied=417 written=14045
         ->  Subquery Scan on revenue6  (cost=1185953.26..1186035.91 rows=3673 width=12) (actual time=21070.202..21095.562 rows=1 loops=1)
               Buffers: shared hit=720578 read=596625 dirtied=417 written=14045
               ->  HashAggregate  (cost=1185953.26..1185999.18 rows=3673 width=12) (actual time=21070.200..21095.558 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=720578 read=596625 dirtied=417 written=14045
                     ->  Bitmap Heap Scan on lineitem  (cost=46742.52..1147364.56 rows=2205069 width=12) (actual time=1289.464..7604.269 rows=2240148 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=652476
                           Buffers: shared hit=365228 read=293373 dirtied=416 written=9118
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46191.26 rows=2205069 width=0) (actual time=989.156..989.156 rows=2244590 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=6
 Planning time: 2.581 ms
 Execution time: 21129.977 ms
(38 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT