BEGIN;
BEGIN
create or replace view revenue0 (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,
	revenue0
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue0
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2357513.68..2362610.87 rows=3733 width=79) (actual time=17235.252..17235.259 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue0.supplier_no)
   Buffers: shared hit=327321 read=991841
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1170232.26..1170232.27 rows=1 width=8) (actual time=6569.030..6569.030 rows=1 loops=1)
           Buffers: shared hit=316621 read=342224
           ->  HashAggregate  (cost=1170148.26..1170185.59 rows=3733 width=12) (actual time=6539.201..6559.938 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=316621 read=342224
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47581.99..1147711.75 rows=2243651 width=12) (actual time=1317.841..5089.334 rows=2250260 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=652699
                       Buffers: shared hit=316621 read=342224
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47021.08 rows=2243651 width=0) (actual time=982.613..982.613 rows=2250260 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=0.053..22.005 rows=53897 loops=1)
         Buffers: shared hit=574 read=898
   ->  Sort  (cost=1187281.12..1187290.45 rows=3733 width=12) (actual time=17208.229..17208.232 rows=1 loops=1)
         Sort Key: revenue0.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=326747 read=990943
         ->  Subquery Scan on revenue0  (cost=1186975.65..1187059.64 rows=3733 width=12) (actual time=17187.557..17208.182 rows=1 loops=1)
               Buffers: shared hit=326747 read=990943
               ->  HashAggregate  (cost=1186975.65..1187022.31 rows=3733 width=12) (actual time=17187.554..17208.177 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=326747 read=990943
                     ->  Bitmap Heap Scan on lineitem  (cost=47581.99..1147711.75 rows=2243651 width=12) (actual time=1360.619..8587.860 rows=2250260 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=652699
                           Buffers: shared hit=10126 read=648719
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47021.08 rows=2243651 width=0) (actual time=1026.612..1026.612 rows=2250260 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: 4.436 ms
 Execution time: 17242.403 ms
(38 rows)

drop view revenue0;
DROP VIEW
COMMIT;
COMMIT