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 >= '1993-03-01'
		and l_shipdate < date'1993-03-01' + 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=2361223.58..2366321.46 rows=3761 width=79) (actual time=39348.865..39348.871 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue10.supplier_no)
   Buffers: shared hit=839070 read=482928 dirtied=238 written=444
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172026.40..1172026.41 rows=1 width=8) (actual time=17592.268..17592.268 rows=1 loops=1)
           Buffers: shared hit=393607 read=266506
           ->  HashAggregate  (cost=1171941.77..1171979.38 rows=3761 width=12) (actual time=17533.200..17581.871 rows=100000 loops=1)
                 Buffers: shared hit=393607 read=266506
                 ->  Bitmap Heap Scan on lineitem  (cost=47904.32..1149345.19 rows=2259658 width=12) (actual time=2236.155..13707.387 rows=2249760 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-03-01'::date) AND (l_shipdate < '1993-05-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=393607 read=266506
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47339.41 rows=2259658 width=0) (actual time=1776.163..1776.163 rows=2251935 loops=1)
                             Index Cond: ((l_shipdate >= '1993-03-01'::date) AND (l_shipdate < '1993-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6144
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.084..33.937 rows=64983 loops=1)
         Buffers: shared hit=178 read=1593
   ->  Sort  (cost=1189197.18..1189206.58 rows=3761 width=12) (actual time=39307.972..39307.974 rows=1 loops=1)
         Sort Key: revenue10.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=838892 read=481335 dirtied=238 written=444
         ->  Subquery Scan on revenue10  (cost=1188889.21..1188973.83 rows=3761 width=12) (actual time=39283.457..39307.939 rows=1 loops=1)
               Buffers: shared hit=838892 read=481335 dirtied=238 written=444
               ->  HashAggregate  (cost=1188889.21..1188936.22 rows=3761 width=12) (actual time=39283.455..39307.935 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=838892 read=481335 dirtied=238 written=444
                     ->  Bitmap Heap Scan on lineitem  (cost=47904.32..1149345.19 rows=2259658 width=12) (actual time=4977.557..17453.080 rows=2249760 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-03-01'::date) AND (l_shipdate < '1993-05-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=445285 read=214829 dirtied=238 written=444
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47339.41 rows=2259658 width=0) (actual time=4626.678..4626.678 rows=2251935 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-03-01'::date) AND (l_shipdate < '1993-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6142
 Total runtime: 39366.199 ms
(33 rows)

drop view revenue10;
DROP VIEW
COMMIT;
COMMIT