BEGIN;
BEGIN
create or replace view revenue17 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-11-01'
		and l_shipdate < date'1993-11-01' + 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,
	revenue17
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue17
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2364584.47..2369680.55 rows=3659 width=79) (actual time=20439.937..20439.940 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue17.supplier_no)
   Buffers: shared hit=550513 read=772758 dirtied=563 written=209
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173895.06..1173895.07 rows=1 width=8) (actual time=9905.665..9905.665 rows=1 loops=1)
           Buffers: shared hit=192768 read=468757 written=209
           ->  HashAggregate  (cost=1173812.73..1173849.32 rows=3659 width=12) (actual time=9861.025..9895.467 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=192768 read=468757 written=209
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=46756.46..1151709.42 rows=2210331 width=12) (actual time=1667.998..8014.351 rows=2244655 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-11-01'::date) AND (l_shipdate < '1994-01-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=655396
                       Buffers: shared hit=192768 read=468757 written=209
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46203.88 rows=2210331 width=0) (actual time=1285.238..1285.238 rows=2255469 loops=1)
                             Index Cond: ((l_shipdate >= '1993-11-01'::date) AND (l_shipdate < '1994-01-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6129
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.033..2.885 rows=7917 loops=1)
         Buffers: shared hit=221
   ->  Sort  (cost=1190689.10..1190698.25 rows=3659 width=12) (actual time=20436.149..20436.149 rows=1 loops=1)
         Sort Key: revenue17.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=550292 read=772758 dirtied=563 written=209
         ->  Subquery Scan on revenue17  (cost=1190390.22..1190472.54 rows=3659 width=12) (actual time=20431.289..20436.112 rows=1 loops=1)
               Buffers: shared hit=550292 read=772758 dirtied=563 written=209
               ->  HashAggregate  (cost=1190390.22..1190435.95 rows=3659 width=12) (actual time=20431.288..20436.109 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=550292 read=772758 dirtied=563 written=209
                     ->  Bitmap Heap Scan on lineitem  (cost=46756.46..1151709.42 rows=2210331 width=12) (actual time=1875.884..8575.968 rows=2244655 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-11-01'::date) AND (l_shipdate < '1994-01-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=655396
                           Buffers: shared hit=357524 read=304001 dirtied=563
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46203.88 rows=2210331 width=0) (actual time=1468.708..1468.708 rows=2255469 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-11-01'::date) AND (l_shipdate < '1994-01-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6129
 Planning time: 3.157 ms
 Execution time: 20450.230 ms
(38 rows)

drop view revenue17;
DROP VIEW
COMMIT;
COMMIT