BEGIN;
BEGIN
create or replace view revenue19 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-02-01'
		and l_shipdate < date'1997-02-01' + 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,
	revenue19
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue19
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2358866.27..2363963.23 rows=3717 width=79) (actual time=26555.420..26555.426 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue19.supplier_no)
   Buffers: shared hit=595190 read=725818 written=9341
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170936.95..1170936.96 rows=1 width=8) (actual time=13377.283..13377.283 rows=1 loops=1)
           Buffers: shared hit=260037 read=399448 written=9341
           ->  HashAggregate  (cost=1170853.32..1170890.49 rows=3717 width=12) (actual time=13310.370..13366.281 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=260037 read=399448 written=9341
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47401.82..1148491.12 rows=2236220 width=12) (actual time=2433.756..10517.401 rows=2247462 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653341
                       Buffers: shared hit=260037 read=399448 written=9341
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46842.76 rows=2236220 width=0) (actual time=1899.679..1899.679 rows=2252406 loops=1)
                             Index Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=205 read=5939 written=137
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.052..31.275 rows=74945 loops=1)
         Buffers: shared hit=2038
   ->  Sort  (cost=1187929.02..1187938.31 rows=3717 width=12) (actual time=26516.261..26516.263 rows=1 loops=1)
         Sort Key: revenue19.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=593152 read=725818 written=9341
         ->  Subquery Scan on revenue19  (cost=1187624.97..1187708.60 rows=3717 width=12) (actual time=26489.486..26516.226 rows=1 loops=1)
               Buffers: shared hit=593152 read=725818 written=9341
               ->  HashAggregate  (cost=1187624.97..1187671.43 rows=3717 width=12) (actual time=26489.483..26516.221 rows=1 loops=1)
                     Group Key: lineitem.l_suppkey
                     Filter: (sum((lineitem.l_extendedprice * (1::double precision - lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=593152 read=725818 written=9341
                     ->  Bitmap Heap Scan on lineitem  (cost=47401.82..1148491.12 rows=2236220 width=12) (actual time=2367.935..10263.300 rows=2247462 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653341
                           Buffers: shared hit=333115 read=326370
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46842.76 rows=2236220 width=0) (actual time=1863.883..1863.883 rows=2252036 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-02-01'::date) AND (l_shipdate < '1997-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6144
 Planning time: 4.343 ms
 Execution time: 26570.638 ms
(38 rows)

drop view revenue19;
DROP VIEW
COMMIT;
COMMIT