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 >= '1993-01-01'
		and l_shipdate < date'1993-01-01' + 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=2361931.01..2367029.59 rows=3808 width=79) (actual time=15154.299..15154.304 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=734135 read=585887
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172273.73..1172273.74 rows=1 width=8) (actual time=4097.201..4097.201 rows=1 loops=1)
           Buffers: shared hit=658093 read=1181
           ->  HashAggregate  (cost=1172188.05..1172226.13 rows=3808 width=12) (actual time=4066.087..4087.482 rows=100000 loops=1)
                 Buffers: shared hit=658093 read=1181
                 ->  Bitmap Heap Scan on lineitem  (cost=48522.82..1149311.96 rows=2287609 width=12) (actual time=941.664..2828.811 rows=2249543 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1993-04-01 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=658093 read=1181
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47950.92 rows=2287609 width=0) (actual time=670.341..670.341 rows=2249543 loops=1)
                             Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1993-04-01 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6144
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.035..24.022 rows=53897 loops=1)
         Buffers: shared hit=1151 read=322
   ->  Sort  (cost=1189657.27..1189666.79 rows=3808 width=12) (actual time=15125.130..15125.132 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=732984 read=585565
         ->  Subquery Scan on revenue0  (cost=1189345.11..1189430.79 rows=3808 width=12) (actual time=15084.106..15125.087 rows=1 loops=1)
               Buffers: shared hit=732984 read=585565
               ->  HashAggregate  (cost=1189345.11..1189392.71 rows=3808 width=12) (actual time=15084.104..15125.084 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=732984 read=585565
                     ->  Bitmap Heap Scan on lineitem  (cost=48522.82..1149311.96 rows=2287609 width=12) (actual time=906.696..8030.191 rows=2249543 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1993-04-01 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=74891 read=584384
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47950.92 rows=2287609 width=0) (actual time=689.970..689.970 rows=2249543 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-01-01'::date) AND (l_shipdate < '1993-04-01 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6145
 Total runtime: 15163.927 ms
(33 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT