BEGIN;
BEGIN
create or replace view revenue3 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-06-01'
		and l_shipdate < date'1993-06-01' + 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,
	revenue3
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue3
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374595.14..2379691.24 rows=3642 width=79) (actual time=27787.492..27787.495 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue3.supplier_no)
   Buffers: shared hit=343837 read=986870 written=25
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178916.29..1178916.30 rows=1 width=8) (actual time=12792.658..12792.658 rows=1 loops=1)
           Buffers: shared hit=75901 read=588947
           ->  HashAggregate  (cost=1178834.34..1178870.76 rows=3642 width=12) (actual time=12729.440..12781.793 rows=100000 loops=1)
                 Buffers: shared hit=75901 read=588947
                 ->  Bitmap Heap Scan on lineitem  (cost=46557.24..1156771.50 rows=2206284 width=12) (actual time=1150.624..9482.650 rows=2248087 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-06-01'::date) AND (l_shipdate < '1993-08-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=75901 read=588947
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46005.67 rows=2206284 width=0) (actual time=872.817..872.817 rows=2270543 loops=1)
                             Index Cond: ((l_shipdate >= '1993-06-01'::date) AND (l_shipdate < '1993-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=2 read=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.075..19.601 rows=36837 loops=1)
         Buffers: shared hit=1010
   ->  Sort  (cost=1195678.85..1195687.95 rows=3642 width=12) (actual time=27762.413..27762.414 rows=1 loops=1)
         Sort Key: revenue3.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=342827 read=986870 written=25
         ->  Subquery Scan on revenue3  (cost=1195381.47..1195463.42 rows=3642 width=12) (actual time=27722.621..27762.380 rows=1 loops=1)
               Buffers: shared hit=342827 read=986870 written=25
               ->  HashAggregate  (cost=1195381.47..1195427.00 rows=3642 width=12) (actual time=27722.619..27762.375 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=342827 read=986870 written=25
                     ->  Bitmap Heap Scan on lineitem  (cost=46557.24..1156771.50 rows=2206284 width=12) (actual time=2200.470..11242.347 rows=2248087 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-06-01'::date) AND (l_shipdate < '1993-08-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=266926 read=397923 written=25
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46005.67 rows=2206284 width=0) (actual time=1861.830..1861.830 rows=2270543 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-06-01'::date) AND (l_shipdate < '1993-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6141
 Total runtime: 27805.034 ms
(33 rows)

drop view revenue3;
DROP VIEW
COMMIT;
COMMIT