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 >= '1997-02-01'
		and l_shipdate < date'1997-02-01' + 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=2363151.01..2368248.86 rows=3776 width=79) (actual time=24136.567..24136.573 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=658993 read=662495 written=7698
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172944.76..1172944.77 rows=1 width=8) (actual time=11647.818..11647.818 rows=1 loops=1)
           Buffers: shared hit=388560 read=271165 written=58
           ->  HashAggregate  (cost=1172859.80..1172897.56 rows=3776 width=12) (actual time=11583.150..11637.316 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=388560 read=271165 written=58
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48140.27..1150143.99 rows=2271581 width=12) (actual time=2430.489..9014.073 rows=2247462 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653581
                       Buffers: shared hit=388560 read=271165 written=58
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47572.38 rows=2271581 width=0) (actual time=1929.232..1929.232 rows=2254163 loops=1)
                             Index Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6142
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.039..31.038 rows=74945 loops=1)
         Buffers: shared hit=2038
   ->  Sort  (cost=1190205.96..1190215.40 rows=3776 width=12) (actual time=24097.853..24097.856 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=656955 read=662495 written=7698
         ->  Subquery Scan on revenue6  (cost=1189896.65..1189981.61 rows=3776 width=12) (actual time=24077.139..24097.818 rows=1 loops=1)
               Buffers: shared hit=656955 read=662495 written=7698
               ->  HashAggregate  (cost=1189896.65..1189943.85 rows=3776 width=12) (actual time=24077.138..24097.816 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=656955 read=662495 written=7698
                     ->  Bitmap Heap Scan on lineitem  (cost=48140.27..1150143.99 rows=2271581 width=12) (actual time=1735.618..9927.147 rows=2247462 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653581
                           Buffers: shared hit=268395 read=391330 written=7640
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47572.38 rows=2271581 width=0) (actual time=1338.664..1338.664 rows=2253000 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=325 read=5819 written=242
 Planning time: 2.877 ms
 Execution time: 24157.146 ms
(38 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT