BEGIN;
BEGIN
create or replace view revenue4 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-06-01'
		and l_shipdate < date'1994-06-01' + 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,
	revenue4
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue4
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2366549.78..2371648.10 rows=3808 width=79) (actual time=18794.783..18794.788 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue4.supplier_no)
   Buffers: shared hit=834401 read=486689 dirtied=270 written=1252
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1174562.05..1174562.06 rows=1 width=8) (actual time=10047.607..10047.607 rows=1 loops=1)
           Buffers: shared hit=312651 read=347441 written=30
           ->  HashAggregate  (cost=1174476.37..1174514.45 rows=3808 width=12) (actual time=9986.597..10037.555 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=312651 read=347441 written=30
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=48585.72..1151544.51 rows=2293186 width=12) (actual time=1394.097..7583.059 rows=2245555 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653952
                       Buffers: shared hit=312651 read=347441 written=30
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48012.43 rows=2293186 width=0) (actual time=1037.438..1037.438 rows=2252626 loops=1)
                             Index Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6140
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.035..12.631 rows=32993 loops=1)
         Buffers: shared hit=906
   ->  Sort  (cost=1191987.42..1191996.94 rows=3808 width=12) (actual time=18778.959..18778.961 rows=1 loops=1)
         Sort Key: revenue4.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=833495 read=486689 dirtied=270 written=1252
         ->  Subquery Scan on revenue4  (cost=1191675.27..1191760.95 rows=3808 width=12) (actual time=18778.494..18778.928 rows=1 loops=1)
               Buffers: shared hit=833495 read=486689 dirtied=270 written=1252
               ->  HashAggregate  (cost=1191675.27..1191722.87 rows=3808 width=12) (actual time=18778.493..18778.926 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=833495 read=486689 dirtied=270 written=1252
                     ->  Bitmap Heap Scan on lineitem  (cost=48585.72..1151544.51 rows=2293186 width=12) (actual time=1279.410..6602.665 rows=2245555 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653952
                           Buffers: shared hit=520844 read=139248 dirtied=270 written=1222
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..48012.43 rows=2293186 width=0) (actual time=975.054..975.054 rows=2252601 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-06-01'::date) AND (l_shipdate < '1994-08-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=342 read=5798 written=261
 Planning time: 2.821 ms
 Execution time: 18812.295 ms
(38 rows)

drop view revenue4;
DROP VIEW
COMMIT;
COMMIT