BEGIN;
BEGIN
create or replace view revenue19 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-08-01'
		and l_shipdate < date'1996-08-01' + 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,
	revenue19
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue19
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2364862.90..2369960.81 rows=3780 width=79) (actual time=19014.883..19014.886 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue19.supplier_no)
   Buffers: shared hit=678904 read=641989 dirtied=86 written=134
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173786.17..1173786.18 rows=1 width=8) (actual time=9333.854..9333.855 rows=1 loops=1)
           Buffers: shared hit=317503 read=342098 written=103
           ->  HashAggregate  (cost=1173701.12..1173738.92 rows=3780 width=12) (actual time=9288.133..9323.322 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=317503 read=342098 written=103
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48207.62..1150946.92 rows=2275420 width=12) (actual time=1841.339..7419.236 rows=2247146 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653463
                       Buffers: shared hit=317503 read=342098 written=103
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47638.76 rows=2275420 width=0) (actual time=1392.305..1392.305 rows=2251561 loops=1)
                             Index Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=1 read=6137
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.031..21.734 rows=61965 loops=1)
         Buffers: shared hit=1691
   ->  Sort  (cost=1191076.43..1191085.88 rows=3780 width=12) (actual time=18987.000..18987.002 rows=1 loops=1)
         Sort Key: revenue19.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=677213 read=641989 dirtied=86 written=134
         ->  Subquery Scan on revenue19  (cost=1190766.77..1190851.82 rows=3780 width=12) (actual time=18959.653..18986.971 rows=1 loops=1)
               Buffers: shared hit=677213 read=641989 dirtied=86 written=134
               ->  HashAggregate  (cost=1190766.77..1190814.02 rows=3780 width=12) (actual time=18959.652..18986.969 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=677213 read=641989 dirtied=86 written=134
                     ->  Bitmap Heap Scan on lineitem  (cost=48207.62..1150946.92 rows=2275420 width=12) (actual time=1369.202..7597.013 rows=2247146 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653463
                           Buffers: shared hit=359710 read=299891 dirtied=86 written=31
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47638.76 rows=2275420 width=0) (actual time=1043.095..1043.095 rows=2251561 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-08-01'::date) AND (l_shipdate < '1996-10-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6138 written=30
 Planning time: 3.121 ms
 Execution time: 19030.909 ms
(38 rows)

drop view revenue19;
DROP VIEW
COMMIT;
COMMIT