BEGIN;
BEGIN
create or replace view revenue7 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1995-10-01'
		and l_shipdate < date'1995-10-01' + 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,
	revenue7
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue7
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2382936.42..2388033.69 rows=3738 width=79) (actual time=22535.460..22535.464 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue7.supplier_no)
   Buffers: shared hit=591277 read=740775 written=15880
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1182848.26..1182848.27 rows=1 width=8) (actual time=9083.818..9083.818 rows=1 loops=1)
           Buffers: shared hit=355354 read=310178 written=206
           ->  HashAggregate  (cost=1182764.15..1182801.53 rows=3738 width=12) (actual time=9040.924..9073.125 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=355354 read=310178 written=206
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47850.20..1160073.77 rows=2269038 width=12) (actual time=1375.007..7202.802 rows=2243175 loops=1)
                       Recheck Cond: ((l_shipdate >= '1995-10-01'::date) AND (l_shipdate < '1995-12-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=659399
                       Buffers: shared hit=355354 read=310178 written=206
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47282.95 rows=2269038 width=0) (actual time=1044.927..1044.927 rows=2272494 loops=1)
                             Index Cond: ((l_shipdate >= '1995-10-01'::date) AND (l_shipdate < '1995-12-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6133 written=14
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.034..14.457 rows=35992 loops=1)
         Buffers: shared hit=988
   ->  Sort  (cost=1200087.86..1200097.20 rows=3738 width=12) (actual time=22517.503..22517.505 rows=1 loops=1)
         Sort Key: revenue7.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=590289 read=740775 written=15880
         ->  Subquery Scan on revenue7  (cost=1199781.94..1199866.04 rows=3738 width=12) (actual time=22517.184..22517.473 rows=1 loops=1)
               Buffers: shared hit=590289 read=740775 written=15880
               ->  HashAggregate  (cost=1199781.94..1199828.66 rows=3738 width=12) (actual time=22517.182..22517.470 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=590289 read=740775 written=15880
                     ->  Bitmap Heap Scan on lineitem  (cost=47850.20..1160073.77 rows=2269038 width=12) (actual time=1807.667..10485.906 rows=2243175 loops=1)
                           Recheck Cond: ((l_shipdate >= '1995-10-01'::date) AND (l_shipdate < '1995-12-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=659399
                           Buffers: shared hit=234935 read=430597 written=15674
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47282.95 rows=2269038 width=0) (actual time=1486.173..1486.173 rows=2270557 loops=1)
                                 Index Cond: ((l_shipdate >= '1995-10-01'::date) AND (l_shipdate < '1995-12-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=269 read=5864 written=5
 Planning time: 3.135 ms
 Execution time: 22548.761 ms
(38 rows)

drop view revenue7;
DROP VIEW
COMMIT;
COMMIT