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 >= '1993-12-01'
		and l_shipdate < date'1993-12-01' + 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=2362493.06..2367590.67 rows=3760 width=79) (actual time=19877.062..19877.065 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=529338 read=788471 dirtied=782 written=25250
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172649.30..1172649.31 rows=1 width=8) (actual time=9384.629..9384.629 rows=1 loops=1)
           Buffers: shared hit=287708 read=371086 written=919
           ->  HashAggregate  (cost=1172564.70..1172602.30 rows=3760 width=12) (actual time=9346.175..9374.285 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=287708 read=371086 written=919
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47954.10..1149936.86 rows=2262784 width=12) (actual time=1184.418..7519.605 rows=2241187 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-12-01'::date) AND (l_shipdate < '1994-03-01 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=652666
                       Buffers: shared hit=287708 read=371086 written=919
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47388.40 rows=2262784 width=0) (actual time=883.435..883.435 rows=2247739 loops=1)
                             Index Cond: ((l_shipdate >= '1993-12-01'::date) AND (l_shipdate < '1994-03-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=3 read=6125
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.037..3.196 rows=7917 loops=1)
         Buffers: shared hit=221
   ->  Sort  (cost=1189843.46..1189852.86 rows=3760 width=12) (actual time=19873.145..19873.145 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=529117 read=788471 dirtied=782 written=25250
         ->  Subquery Scan on revenue6  (cost=1189535.58..1189620.18 rows=3760 width=12) (actual time=19870.353..19873.113 rows=1 loops=1)
               Buffers: shared hit=529117 read=788471 dirtied=782 written=25250
               ->  HashAggregate  (cost=1189535.58..1189582.58 rows=3760 width=12) (actual time=19870.352..19873.112 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=529117 read=788471 dirtied=782 written=25250
                     ->  Bitmap Heap Scan on lineitem  (cost=47954.10..1149936.86 rows=2262784 width=12) (actual time=1294.602..8465.471 rows=2241187 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-12-01'::date) AND (l_shipdate < '1994-03-01 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=652666
                           Buffers: shared hit=241409 read=417385 dirtied=782 written=24331
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47388.40 rows=2262784 width=0) (actual time=993.130..993.130 rows=2246695 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-12-01'::date) AND (l_shipdate < '1994-03-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1021 read=5107 written=164
 Planning time: 2.295 ms
 Execution time: 19894.947 ms
(38 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT