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 >= '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,
	revenue7
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue7
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2374433.01..2379529.84 rows=3709 width=79) (actual time=16967.736..16967.739 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue7.supplier_no)
   Buffers: shared hit=617051 read=711080 written=461
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178681.18..1178681.19 rows=1 width=8) (actual time=8138.488..8138.488 rows=1 loops=1)
           Buffers: shared hit=284228 read=379006
           ->  HashAggregate  (cost=1178597.73..1178634.82 rows=3709 width=12) (actual time=8103.528..8129.114 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=284228 read=379006
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47453.53..1156130.45 rows=2246728 width=12) (actual time=1072.775..6499.702 rows=2243666 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=657100
                       Buffers: shared hit=284228 read=379006
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46891.85 rows=2246728 width=0) (actual time=797.156..797.156 rows=2263668 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
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.039..23.689 rows=60982 loops=1)
         Buffers: shared hit=1663
   ->  Sort  (cost=1195751.52..1195760.80 rows=3709 width=12) (actual time=16938.401..16938.402 rows=1 loops=1)
         Sort Key: revenue7.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=615388 read=711080 written=461
         ->  Subquery Scan on revenue7  (cost=1195448.19..1195531.64 rows=3709 width=12) (actual time=16921.068..16938.374 rows=1 loops=1)
               Buffers: shared hit=615388 read=711080 written=461
               ->  HashAggregate  (cost=1195448.19..1195494.55 rows=3709 width=12) (actual time=16921.066..16938.370 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=615388 read=711080 written=461
                     ->  Bitmap Heap Scan on lineitem  (cost=47453.53..1156130.45 rows=2246728 width=12) (actual time=1060.475..7120.892 rows=2243666 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=657100
                           Buffers: shared hit=331160 read=332074 written=461
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46891.85 rows=2246728 width=0) (actual time=815.481..815.481 rows=2263668 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 written=19
 Planning time: 2.659 ms
 Execution time: 16981.556 ms
(38 rows)

drop view revenue7;
DROP VIEW
COMMIT;
COMMIT