BEGIN;
BEGIN
create or replace view revenue16 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-06-01'
		and l_shipdate < date'1997-06-01' + 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,
	revenue16
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue16
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2377140.16..2382237.78 rows=3761 width=79) (actual time=19094.994..19094.999 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue16.supplier_no)
   Buffers: shared hit=683173 read=646365 written=1593
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179931.62..1179931.63 rows=1 width=8) (actual time=9142.687..9142.688 rows=1 loops=1)
           Buffers: shared hit=342141 read=322039 written=447
           ->  HashAggregate  (cost=1179846.99..1179884.60 rows=3761 width=12) (actual time=9099.433..9132.439 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=342141 read=322039 written=447
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48026.72..1157109.28 rows=2273771 width=12) (actual time=1236.840..7302.212 rows=2245594 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=658046
                       Buffers: shared hit=342141 read=322039 written=447
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47458.28 rows=2273771 width=0) (actual time=936.482..936.482 rows=2263779 loops=1)
                             Index Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6133
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.036..17.316 rows=42993 loops=1)
         Buffers: shared hit=1178
   ->  Sort  (cost=1197208.24..1197217.65 rows=3761 width=12) (actual time=19073.407..19073.409 rows=1 loops=1)
         Sort Key: revenue16.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=681995 read=646365 written=1593
         ->  Subquery Scan on revenue16  (cost=1196900.28..1196984.90 rows=3761 width=12) (actual time=19067.760..19073.374 rows=1 loops=1)
               Buffers: shared hit=681995 read=646365 written=1593
               ->  HashAggregate  (cost=1196900.28..1196947.29 rows=3761 width=12) (actual time=19067.759..19073.372 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=681995 read=646365 written=1593
                     ->  Bitmap Heap Scan on lineitem  (cost=48026.72..1157109.28 rows=2273771 width=12) (actual time=1301.172..8094.013 rows=2245594 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=658046
                           Buffers: shared hit=339854 read=324326 written=1146
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47458.28 rows=2273771 width=0) (actual time=996.040..996.040 rows=2263779 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-06-01'::date) AND (l_shipdate < '1997-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6131 written=43
 Planning time: 2.691 ms
 Execution time: 19110.939 ms
(38 rows)

drop view revenue16;
DROP VIEW
COMMIT;
COMMIT