BEGIN;
BEGIN
create or replace view revenue18 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-06-01'
		and l_shipdate < date'1996-06-01' + 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,
	revenue18
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue18
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2386793.16..2391890.82 rows=3764 width=79) (actual time=18752.014..18752.018 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue18.supplier_no)
   Buffers: shared hit=891644 read=440832 written=2957
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1184700.00..1184700.01 rows=1 width=8) (actual time=10183.566..10183.566 rows=1 loops=1)
           Buffers: shared hit=390963 read=275110 written=226
           ->  HashAggregate  (cost=1184615.31..1184652.95 rows=3764 width=12) (actual time=10140.999..10173.058 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=390963 read=275110 written=226
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48257.29..1161722.90 rows=2289241 width=12) (actual time=2425.169..8376.811 rows=2243514 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-06-01'::date) AND (l_shipdate < '1996-08-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=659941
                       Buffers: shared hit=390963 read=275110 written=226
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47684.98 rows=2289241 width=0) (actual time=2035.061..2035.061 rows=2272500 loops=1)
                             Index Cond: ((l_shipdate >= '1996-06-01'::date) AND (l_shipdate < '1996-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6132
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.029..4.914 rows=11829 loops=1)
         Buffers: shared hit=330
   ->  Sort  (cost=1202092.85..1202102.26 rows=3764 width=12) (actual time=18745.848..18745.850 rows=1 loops=1)
         Sort Key: revenue18.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=891314 read=440832 written=2957
         ->  Subquery Scan on revenue18  (cost=1201784.62..1201869.31 rows=3764 width=12) (actual time=18703.748..18745.808 rows=1 loops=1)
               Buffers: shared hit=891314 read=440832 written=2957
               ->  HashAggregate  (cost=1201784.62..1201831.67 rows=3764 width=12) (actual time=18703.746..18745.803 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=891314 read=440832 written=2957
                     ->  Bitmap Heap Scan on lineitem  (cost=48257.29..1161722.90 rows=2289241 width=12) (actual time=1149.267..6283.820 rows=2243514 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-06-01'::date) AND (l_shipdate < '1996-08-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=659941
                           Buffers: shared hit=500351 read=165722 written=2731
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47684.98 rows=2289241 width=0) (actual time=895.465..895.465 rows=2272418 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-06-01'::date) AND (l_shipdate < '1996-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=859 read=5273 written=519
 Planning time: 2.538 ms
 Execution time: 18764.011 ms
(38 rows)

drop view revenue18;
DROP VIEW
COMMIT;
COMMIT