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 >= '1993-09-01'
		and l_shipdate < date'1993-09-01' + 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=2371970.28..2377067.10 rows=3708 width=79) (actual time=21246.355..21246.360 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue16.supplier_no)
   Buffers: shared hit=817941 read=510391 written=7433
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1177464.59..1177464.60 rows=1 width=8) (actual time=10262.245..10262.245 rows=1 loops=1)
           Buffers: shared hit=358372 read=304802 written=492
           ->  HashAggregate  (cost=1177381.16..1177418.24 rows=3708 width=12) (actual time=10206.083..10251.496 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=358372 read=304802 written=492
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47393.23..1154953.19 rows=2242797 width=12) (actual time=1605.649..8042.560 rows=2246994 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=657033
                       Buffers: shared hit=358372 read=304802 written=492
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46832.54 rows=2242797 width=0) (actual time=1188.614..1188.614 rows=2266600 loops=1)
                             Index Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6141 written=11
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.034..30.795 rows=72980 loops=1)
         Buffers: shared hit=1984
   ->  Sort  (cost=1194505.38..1194514.65 rows=3708 width=12) (actual time=21207.985..21207.987 rows=1 loops=1)
         Sort Key: revenue16.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=815957 read=510391 written=7433
         ->  Subquery Scan on revenue16  (cost=1194202.14..1194285.57 rows=3708 width=12) (actual time=21190.999..21207.947 rows=1 loops=1)
               Buffers: shared hit=815957 read=510391 written=7433
               ->  HashAggregate  (cost=1194202.14..1194248.49 rows=3708 width=12) (actual time=21190.997..21207.942 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=815957 read=510391 written=7433
                     ->  Bitmap Heap Scan on lineitem  (cost=47393.23..1154953.19 rows=2242797 width=12) (actual time=2208.588..8953.831 rows=2246994 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=657033
                           Buffers: shared hit=457585 read=205589 written=6941
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46832.54 rows=2242797 width=0) (actual time=1721.639..1721.639 rows=2264349 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-09-01'::date) AND (l_shipdate < '1993-11-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=6 read=6135 written=4
 Planning time: 2.919 ms
 Execution time: 21264.426 ms
(38 rows)

drop view revenue16;
DROP VIEW
COMMIT;
COMMIT