BEGIN;
BEGIN
create or replace view revenue0 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-05-01'
		and l_shipdate < date'1994-05-01' + 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,
	revenue0
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue0
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2362188.91..2367287.50 rows=3809 width=79) (actual time=13805.173..13805.177 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=730272 read=589442
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172392.94..1172392.95 rows=1 width=8) (actual time=3926.567..3926.567 rows=1 loops=1)
           Buffers: shared hit=657868 read=1009
           ->  HashAggregate  (cost=1172307.24..1172345.33 rows=3809 width=12) (actual time=3896.869..3917.085 rows=100000 loops=1)
                 Buffers: shared hit=657868 read=1009
                 ->  Bitmap Heap Scan on lineitem  (cost=48577.34..1149405.28 rows=2290196 width=12) (actual time=913.988..2707.873 rows=2247412 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=657868 read=1009
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48004.79 rows=2290196 width=0) (actual time=643.450..643.450 rows=2247412 loops=1)
                             Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.038..30.902 rows=71902 loops=1)
         Buffers: shared hit=1538 read=421
   ->  Sort  (cost=1189795.95..1189805.48 rows=3809 width=12) (actual time=13767.452..13767.453 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=728734 read=589021
         ->  Subquery Scan on revenue0  (cost=1189483.71..1189569.41 rows=3809 width=12) (actual time=13762.034..13767.410 rows=1 loops=1)
               Buffers: shared hit=728734 read=589021
               ->  HashAggregate  (cost=1189483.71..1189531.32 rows=3809 width=12) (actual time=13762.033..13767.408 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=728734 read=589021
                     ->  Bitmap Heap Scan on lineitem  (cost=48577.34..1149405.28 rows=2290196 width=12) (actual time=1064.758..8042.771 rows=2247412 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=70866 read=588012
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48004.79 rows=2290196 width=0) (actual time=786.572..786.572 rows=2247412 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6139
 Total runtime: 13815.197 ms
(33 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT