BEGIN;
BEGIN
create or replace view revenue1 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-07-01'
		and l_shipdate < date'1996-07-01' + 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,
	revenue1
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue1
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2364140.21..2369237.90 rows=3766 width=79) (actual time=14674.625..14674.629 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue1.supplier_no)
   Buffers: shared hit=806887 read=513518
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1173452.27..1173452.28 rows=1 width=8) (actual time=4869.501..4869.501 rows=1 loops=1)
           Buffers: shared hit=598062 read=61309
           ->  HashAggregate  (cost=1173367.53..1173405.19 rows=3766 width=12) (actual time=4839.233..4860.186 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=598062 read=61309
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48053.88..1150685.27 rows=2268226 width=12) (actual time=1111.526..3503.545 rows=2243700 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653237
                       Buffers: shared hit=598062 read=61309
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47486.83 rows=2268226 width=0) (actual time=808.685..808.685 rows=2250224 loops=1)
                             Index Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6134
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.058..26.964 rows=60982 loops=1)
         Buffers: shared hit=168 read=1495
   ->  Sort  (cost=1190687.64..1190697.05 rows=3766 width=12) (actual time=14642.121..14642.123 rows=1 loops=1)
         Sort Key: revenue1.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=806719 read=512023
         ->  Subquery Scan on revenue1  (cost=1190379.23..1190463.96 rows=3766 width=12) (actual time=14623.686..14642.076 rows=1 loops=1)
               Buffers: shared hit=806719 read=512023
               ->  HashAggregate  (cost=1190379.23..1190426.30 rows=3766 width=12) (actual time=14623.685..14642.073 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=806719 read=512023
                     ->  Bitmap Heap Scan on lineitem  (cost=48053.88..1150685.27 rows=2268226 width=12) (actual time=1316.571..7912.384 rows=2243700 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653237
                           Buffers: shared hit=208657 read=450714
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47486.83 rows=2268226 width=0) (actual time=1006.655..1006.655 rows=2250224 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-07-01'::date) AND (l_shipdate < '1996-09-29 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6134
 Planning time: 4.208 ms
 Execution time: 14682.901 ms
(38 rows)

drop view revenue1;
DROP VIEW
COMMIT;
COMMIT