BEGIN;
BEGIN
create or replace view revenue27 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-05-01'
		and l_shipdate < date'1993-05-01' + 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,
	revenue27
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue27
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374866.46..2379964.54 rows=3792 width=79) (actual time=22544.982..22544.986 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue27.supplier_no)
   Buffers: shared hit=774979 read=553246 written=209
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178723.59..1178723.60 rows=1 width=8) (actual time=10652.542..10652.542 rows=1 loops=1)
           Buffers: shared hit=388781 read=274191 written=165
           ->  HashAggregate  (cost=1178638.27..1178676.19 rows=3792 width=12) (actual time=10608.931..10641.723 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=388781 read=274191 written=165
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48470.42..1155713.53 rows=2292474 width=12) (actual time=1850.966..8535.659 rows=2248763 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=656831
                       Buffers: shared hit=388781 read=274191 written=165
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47897.31 rows=2292474 width=0) (actual time=1414.991..1414.991 rows=2262135 loops=1)
                             Index Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6140 written=3
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.096..35.675 rows=83935 loops=1)
         Buffers: shared hit=2281
   ->  Sort  (cost=1196142.56..1196152.04 rows=3792 width=12) (actual time=22500.850..22500.852 rows=1 loops=1)
         Sort Key: revenue27.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=772698 read=553246 written=209
         ->  Subquery Scan on revenue27  (cost=1195831.83..1195917.15 rows=3792 width=12) (actual time=22497.462..22500.813 rows=1 loops=1)
               Buffers: shared hit=772698 read=553246 written=209
               ->  HashAggregate  (cost=1195831.83..1195879.23 rows=3792 width=12) (actual time=22497.460..22500.810 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=772698 read=553246 written=209
                     ->  Bitmap Heap Scan on lineitem  (cost=48470.42..1155713.53 rows=2292474 width=12) (actual time=1591.054..9226.707 rows=2248763 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=656831
                           Buffers: shared hit=383917 read=279055 written=44
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47897.31 rows=2292474 width=0) (actual time=1270.536..1270.536 rows=2262135 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6141 written=2
 Planning time: 4.730 ms
 Execution time: 22558.357 ms
(38 rows)

drop view revenue27;
DROP VIEW
COMMIT;
COMMIT