BEGIN;
BEGIN
create or replace view revenue8 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-02-01'
		and l_shipdate < date'1993-02-01' + 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,
	revenue8
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue8
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2361387.61..2366484.63 rows=3721 width=79) (actual time=23814.471..23814.478 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue8.supplier_no)
   Buffers: shared hit=743601 read=578161 written=46
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172180.72..1172180.73 rows=1 width=8) (actual time=10708.757..10708.757 rows=1 loops=1)
           Buffers: shared hit=392640 read=267505
           ->  HashAggregate  (cost=1172096.99..1172134.20 rows=3721 width=12) (actual time=10664.393..10697.776 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=392640 read=267505
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47471.67..1149690.06 rows=2240693 width=12) (actual time=1231.373..8377.346 rows=2250345 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=653999
                       Buffers: shared hit=392640 read=267505
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46911.50 rows=2240693 width=0) (actual time=958.495..958.495 rows=2254695 loops=1)
                             Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6146
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.048..24.361 rows=53897 loops=1)
         Buffers: shared hit=1472
   ->  Sort  (cost=1189206.60..1189215.90 rows=3721 width=12) (actual time=23784.011..23784.014 rows=1 loops=1)
         Sort Key: revenue8.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=742129 read=578161 written=46
         ->  Subquery Scan on revenue8  (cost=1188902.19..1188985.91 rows=3721 width=12) (actual time=23742.080..23783.975 rows=1 loops=1)
               Buffers: shared hit=742129 read=578161 written=46
               ->  HashAggregate  (cost=1188902.19..1188948.70 rows=3721 width=12) (actual time=23742.078..23783.971 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=742129 read=578161 written=46
                     ->  Bitmap Heap Scan on lineitem  (cost=47471.67..1149690.06 rows=2240693 width=12) (actual time=1596.651..10075.171 rows=2250345 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=653999
                           Buffers: shared hit=349489 read=310656 written=46
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46911.50 rows=2240693 width=0) (actual time=1228.327..1228.327 rows=2254695 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-02-01'::date) AND (l_shipdate < '1993-05-02 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6146
 Planning time: 4.986 ms
 Execution time: 23823.913 ms
(38 rows)

drop view revenue8;
DROP VIEW
COMMIT;
COMMIT