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 >= '1993-02-01'
		and l_shipdate < date'1993-02-01' + 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=2359184.17..2364282.11 rows=3765 width=79) (actual time=13512.169..13512.172 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=729258 read=589906
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1171004.72..1171004.73 rows=1 width=8) (actual time=3774.291..3774.291 rows=1 loops=1)
           Buffers: shared hit=657691 read=1154
           ->  HashAggregate  (cost=1170920.01..1170957.66 rows=3765 width=12) (actual time=3743.845..3764.781 rows=100000 loops=1)
                 Buffers: shared hit=657691 read=1154
                 ->  Bitmap Heap Scan on lineitem  (cost=47941.34..1148318.54 rows=2260147 width=12) (actual time=774.628..2523.672 rows=2250260 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=657691 read=1154
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47376.30 rows=2260147 width=0) (actual time=558.952..558.952 rows=2250260 loops=1)
                             Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6146
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.044..18.804 rows=53897 loops=1)
         Buffers: shared hit=1148 read=325
   ->  Sort  (cost=1188179.44..1188188.85 rows=3765 width=12) (actual time=13488.315..13488.316 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=728110 read=589581
         ->  Subquery Scan on revenue0  (cost=1187871.11..1187955.83 rows=3765 width=12) (actual time=13471.685..13488.250 rows=1 loops=1)
               Buffers: shared hit=728110 read=589581
               ->  HashAggregate  (cost=1187871.11..1187918.18 rows=3765 width=12) (actual time=13471.683..13488.247 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=728110 read=589581
                     ->  Bitmap Heap Scan on lineitem  (cost=47941.34..1148318.54 rows=2260147 width=12) (actual time=890.896..8043.772 rows=2250260 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=70419 read=588427
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47376.30 rows=2260147 width=0) (actual time=675.450..675.450 rows=2250260 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6147
 Total runtime: 13516.663 ms
(33 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT