BEGIN;
BEGIN
create or replace view revenue23 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1997-08-01'
		and l_shipdate < date'1997-08-01' + 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,
	revenue23
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue23
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2361054.82..2366151.74 rows=3715 width=79) (actual time=22389.160..22389.162 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue23.supplier_no)
   Buffers: shared hit=807967 read=512481 written=50
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172027.02..1172027.03 rows=1 width=8) (actual time=10709.812..10709.812 rows=1 loops=1)
           Buffers: shared hit=431395 read=228814
           ->  HashAggregate  (cost=1171943.43..1171980.58 rows=3715 width=12) (actual time=10664.421..10698.757 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=431395 read=228814
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47401.48..1149569.85 rows=2237358 width=12) (actual time=1547.449..8267.582 rows=2245417 loops=1)
                       Recheck Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=654076
                       Buffers: shared hit=431395 read=228814
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46842.15 rows=2237358 width=0) (actual time=1166.735..1166.735 rows=2249914 loops=1)
                             Index Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6132
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.047..0.440 rows=973 loops=1)
         Buffers: shared hit=30
   ->  Sort  (cost=1189027.49..1189036.78 rows=3715 width=12) (actual time=22388.587..22388.587 rows=1 loops=1)
         Sort Key: revenue23.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=807937 read=512481 written=50
         ->  Subquery Scan on revenue23  (cost=1188723.62..1188807.21 rows=3715 width=12) (actual time=22378.382..22388.551 rows=1 loops=1)
               Buffers: shared hit=807937 read=512481 written=50
               ->  HashAggregate  (cost=1188723.62..1188770.06 rows=3715 width=12) (actual time=22378.381..22388.549 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=807937 read=512481 written=50
                     ->  Bitmap Heap Scan on lineitem  (cost=47401.48..1149569.85 rows=2237358 width=12) (actual time=1644.200..9519.684 rows=2245417 loops=1)
                           Recheck Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=654076
                           Buffers: shared hit=376542 read=283667 written=50
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46842.15 rows=2237358 width=0) (actual time=1250.713..1250.713 rows=2249914 loops=1)
                                 Index Cond: ((l_shipdate >= '1997-08-01'::date) AND (l_shipdate < '1997-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6133
 Planning time: 4.129 ms
 Execution time: 22397.671 ms
(38 rows)

drop view revenue23;
DROP VIEW
COMMIT;
COMMIT