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 >= '1993-04-01'
		and l_shipdate < date'1993-04-01' + 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=2359454.93..2364551.77 rows=3709 width=79) (actual time=21600.438..21600.443 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=855291 read=465736 dirtied=26 written=3888
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171254.55..1171254.56 rows=1 width=8) (actual time=9806.548..9806.548 rows=1 loops=1)
           Buffers: shared hit=445202 read=215061 written=73
           ->  HashAggregate  (cost=1171171.10..1171208.19 rows=3709 width=12) (actual time=9722.485..9796.065 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=445202 read=215061 written=73
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47258.95..1148870.24 rows=2230086 width=12) (actual time=1276.525..6905.371 rows=2247834 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=654118
                       Buffers: shared hit=445202 read=215061 written=73
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46701.43 rows=2230086 width=0) (actual time=958.750..958.750 rows=2254468 loops=1)
                             Index Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6144
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.036..7.283 rows=17858 loops=1)
         Buffers: shared hit=501
   ->  Sort  (cost=1188200.08..1188209.35 rows=3709 width=12) (actual time=21591.393..21591.395 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=854790 read=465736 dirtied=26 written=3888
         ->  Subquery Scan on revenue6  (cost=1187896.74..1187980.19 rows=3709 width=12) (actual time=21577.076..21591.357 rows=1 loops=1)
               Buffers: shared hit=854790 read=465736 dirtied=26 written=3888
               ->  HashAggregate  (cost=1187896.74..1187943.10 rows=3709 width=12) (actual time=21577.073..21591.351 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=854790 read=465736 dirtied=26 written=3888
                     ->  Bitmap Heap Scan on lineitem  (cost=47258.95..1148870.24 rows=2230086 width=12) (actual time=1744.730..8704.830 rows=2247834 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=654118
                           Buffers: shared hit=409588 read=250675 dirtied=26 written=3815
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46701.43 rows=2230086 width=0) (actual time=1368.841..1368.841 rows=2253740 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=367 read=5778 written=265
 Planning time: 3.383 ms
 Execution time: 21620.778 ms
(38 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT