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 >= '1994-07-01'
		and l_shipdate < date'1994-07-01' + 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=2361069.39..2366167.18 rows=3755 width=79) (actual time=29437.063..29437.069 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=795347 read=524238 dirtied=217 written=371
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171955.34..1171955.35 rows=1 width=8) (actual time=15375.487..15375.488 rows=1 loops=1)
           Buffers: shared hit=292458 read=367069 written=56
           ->  HashAggregate  (cost=1171870.85..1171908.40 rows=3755 width=12) (actual time=15242.356..15323.380 rows=100000 loops=1)
                 Buffers: shared hit=292458 read=367069 written=56
                 ->  Bitmap Heap Scan on lineitem  (cost=47872.35..1149289.85 rows=2258100 width=12) (actual time=2628.485..11594.474 rows=2250129 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=292458 read=367069 written=56
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47307.83 rows=2258100 width=0) (actual time=2172.430..2172.430 rows=2252389 loops=1)
                             Index Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6144
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.078..13.421 rows=18903 loops=1)
         Buffers: shared hit=76 read=454
   ->  Sort  (cost=1189114.04..1189123.42 rows=3755 width=12) (actual time=29420.234..29420.237 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=795271 read=523784 dirtied=217 written=371
         ->  Subquery Scan on revenue10  (cost=1188806.60..1188891.09 rows=3755 width=12) (actual time=29415.035..29420.175 rows=1 loops=1)
               Buffers: shared hit=795271 read=523784 dirtied=217 written=371
               ->  HashAggregate  (cost=1188806.60..1188853.54 rows=3755 width=12) (actual time=29415.031..29420.169 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=795271 read=523784 dirtied=217 written=371
                     ->  Bitmap Heap Scan on lineitem  (cost=47872.35..1149289.85 rows=2258100 width=12) (actual time=3235.571..10210.289 rows=2250129 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=502813 read=156715 dirtied=217 written=315
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47307.83 rows=2258100 width=0) (actual time=2768.967..2768.967 rows=2252389 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-07-01'::date) AND (l_shipdate < '1994-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=954 read=5193
 Total runtime: 29471.243 ms
(33 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT