BEGIN;
BEGIN
create or replace view revenue10 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-05-01'
		and l_shipdate < date'1993-05-01' + 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,
	revenue10
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue10
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2363361.47..2368459.55 rows=3792 width=79) (actual time=20369.767..20369.774 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=988572 read=333191 dirtied=342 written=21
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173013.65..1173013.66 rows=1 width=8) (actual time=11072.432..11072.432 rows=1 loops=1)
           Buffers: shared hit=430623 read=229118 written=2
           ->  HashAggregate  (cost=1172928.33..1172966.25 rows=3792 width=12) (actual time=10984.892..11061.412 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=430623 read=229118 written=2
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48354.13..1150117.05 rows=2281128 width=12) (actual time=1730.052..7985.024 rows=2248696 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653600
                       Buffers: shared hit=430623 read=229118 written=2
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47783.85 rows=2281128 width=0) (actual time=1345.741..1345.741 rows=2250934 loops=1)
                             Index Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6141
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.040..34.984 rows=83935 loops=1)
         Buffers: shared hit=2281
   ->  Sort  (cost=1190347.52..1190357.00 rows=3792 width=12) (actual time=20326.068..20326.070 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=986291 read=333191 dirtied=342 written=21
         ->  Subquery Scan on revenue10  (cost=1190036.79..1190122.11 rows=3792 width=12) (actual time=20319.724..20326.025 rows=1 loops=1)
               Buffers: shared hit=986291 read=333191 dirtied=342 written=21
               ->  HashAggregate  (cost=1190036.79..1190084.19 rows=3792 width=12) (actual time=20319.722..20326.019 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=986291 read=333191 dirtied=342 written=21
                     ->  Bitmap Heap Scan on lineitem  (cost=48354.13..1150117.05 rows=2281128 width=12) (actual time=1823.979..7014.207 rows=2248696 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653600
                           Buffers: shared hit=555668 read=104073 dirtied=342 written=19
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47783.85 rows=2281128 width=0) (actual time=1432.507..1432.507 rows=2250934 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=2 read=6139
 Planning time: 3.698 ms
 Execution time: 20379.755 ms
(38 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT