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 >= '1993-04-01'
		and l_shipdate < date'1993-04-01' + 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=2383983.69..2389080.59 rows=3713 width=79) (actual time=20171.405..20171.407 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue13.supplier_no)
   Buffers: shared hit=335992 read=998525 written=38030
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1183412.43..1183412.44 rows=1 width=8) (actual time=10071.330..10071.330 rows=1 loops=1)
           Buffers: shared hit=131417 read=535591 written=37987
           ->  HashAggregate  (cost=1183328.89..1183366.02 rows=3713 width=12) (actual time=10034.630..10061.286 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=131417 read=535591 written=37987
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47605.67..1160744.40 rows=2258449 width=12) (actual time=1100.940..8109.335 rows=2250488 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=660863
                       Buffers: shared hit=131417 read=535591 written=37987
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47041.06 rows=2258449 width=0) (actual time=804.101..804.101 rows=2276945 loops=1)
                             Index Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6145
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.030..6.658 rows=17858 loops=1)
         Buffers: shared hit=387 read=114
   ->  Sort  (cost=1200570.95..1200580.24 rows=3713 width=12) (actual time=20163.006..20163.007 rows=1 loops=1)
         Sort Key: revenue13.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=335605 read=998411 written=38030
         ->  Subquery Scan on revenue13  (cost=1200267.26..1200350.80 rows=3713 width=12) (actual time=20158.191..20162.982 rows=1 loops=1)
               Buffers: shared hit=335605 read=998411 written=38030
               ->  HashAggregate  (cost=1200267.26..1200313.67 rows=3713 width=12) (actual time=20158.190..20162.979 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=335605 read=998411 written=38030
                     ->  Bitmap Heap Scan on lineitem  (cost=47605.67..1160744.40 rows=2258449 width=12) (actual time=1127.043..8266.096 rows=2250488 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=660863
                           Buffers: shared hit=204188 read=462820 written=43
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47041.06 rows=2258449 width=0) (actual time=874.653..874.653 rows=2276945 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6145
 Planning time: 2.830 ms
 Execution time: 20181.058 ms
(38 rows)

drop view revenue13;
DROP VIEW
COMMIT;
COMMIT