BEGIN;
BEGIN
create or replace view revenue13 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-03-01'
		and l_shipdate < date'1996-03-01' + 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,
	revenue13
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue13
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2388080.63..2393178.55 rows=3781 width=79) (actual time=21373.494..21373.499 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue13.supplier_no)
   Buffers: shared hit=820520 read=512308 dirtied=293 written=568
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1185304.73..1185304.74 rows=1 width=8) (actual time=11364.609..11364.609 rows=1 loops=1)
           Buffers: shared hit=372860 read=292979 written=266
           ->  HashAggregate  (cost=1185219.66..1185257.47 rows=3781 width=12) (actual time=11279.315..11353.963 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=372860 read=292979 written=266
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48470.36..1162224.74 rows=2299492 width=12) (actual time=1948.306..8609.192 rows=2244539 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=659708
                       Buffers: shared hit=372860 read=292979 written=266
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47895.49 rows=2299492 width=0) (actual time=1503.288..1503.288 rows=2271381 loops=1)
                             Index Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6131 written=6
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.029..18.832 rows=41964 loops=1)
         Buffers: shared hit=1150
   ->  Sort  (cost=1202775.60..1202785.05 rows=3781 width=12) (actual time=21350.354..21350.356 rows=1 loops=1)
         Sort Key: revenue13.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=819370 read=512308 dirtied=293 written=568
         ->  Subquery Scan on revenue13  (cost=1202465.85..1202550.92 rows=3781 width=12) (actual time=21326.115..21350.317 rows=1 loops=1)
               Buffers: shared hit=819370 read=512308 dirtied=293 written=568
               ->  HashAggregate  (cost=1202465.85..1202513.11 rows=3781 width=12) (actual time=21326.113..21350.312 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=819370 read=512308 dirtied=293 written=568
                     ->  Bitmap Heap Scan on lineitem  (cost=48470.36..1162224.74 rows=2299492 width=12) (actual time=1272.322..7805.444 rows=2244539 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=659708
                           Buffers: shared hit=446510 read=219329 dirtied=293 written=302
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47895.49 rows=2299492 width=0) (actual time=994.577..994.577 rows=2271381 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-03-01'::date) AND (l_shipdate < '1996-05-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=1 read=6130 written=5
 Planning time: 2.850 ms
 Execution time: 21384.375 ms
(38 rows)

drop view revenue13;
DROP VIEW
COMMIT;
COMMIT