BEGIN;
BEGIN
create or replace view revenue2 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1993-05-01'
		and l_shipdate < date'1993-05-01' + 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,
	revenue2
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue2
	)
order by
	s_suppkey;
                                                                                      QUERY PLAN                                                                                       
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2368204.38..2373301.95 rows=3758 width=79) (actual time=17187.137..17187.142 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue2.supplier_no)
   Buffers: shared hit=667831 read=657848 dirtied=1182 written=262
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1175488.41..1175488.42 rows=1 width=8) (actual time=8281.393..8281.393 rows=1 loops=1)
           Buffers: shared hit=357554 read=304145 dirtied=565 written=34
           ->  HashAggregate  (cost=1175403.86..1175441.44 rows=3758 width=12) (actual time=8243.121..8271.165 rows=100000 loops=1)
                 Group Key: lineitem_1.l_suppkey
                 Buffers: shared hit=357554 read=304145 dirtied=565 written=34
                 ->  Bitmap Heap Scan on lineitem lineitem_1  (cost=47983.51..1152731.72 rows=2267214 width=12) (actual time=1909.691..6560.386 rows=2248978 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                       Heap Blocks: exact=655558
                       Buffers: shared hit=357554 read=304145 dirtied=565 written=34
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47416.71 rows=2267214 width=0) (actual time=1628.907..1628.907 rows=2257722 loops=1)
                             Index Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6141
   ->  Index Scan using pk_supplier on supplier  (cost=0.29..4791.49 rows=100000 width=71) (actual time=0.061..32.045 rows=83935 loops=1)
         Buffers: shared hit=2281
   ->  Sort  (cost=1192715.66..1192725.06 rows=3758 width=12) (actual time=17147.175..17147.177 rows=1 loops=1)
         Sort Key: revenue2.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=665550 read=657848 dirtied=1182 written=262
         ->  Subquery Scan on revenue2  (cost=1192407.96..1192492.52 rows=3758 width=12) (actual time=17145.000..17147.147 rows=1 loops=1)
               Buffers: shared hit=665550 read=657848 dirtied=1182 written=262
               ->  HashAggregate  (cost=1192407.96..1192454.94 rows=3758 width=12) (actual time=17144.999..17147.146 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=665550 read=657848 dirtied=1182 written=262
                     ->  Bitmap Heap Scan on lineitem  (cost=47983.51..1152731.72 rows=2267214 width=12) (actual time=1186.022..7086.301 rows=2248978 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                           Heap Blocks: exact=655558
                           Buffers: shared hit=307996 read=353703 dirtied=617 written=228
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47416.71 rows=2267214 width=0) (actual time=899.760..899.760 rows=2257722 loops=1)
                                 Index Cond: ((l_shipdate >= '1993-05-01'::date) AND (l_shipdate < '1993-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared read=6141
 Planning time: 2.239 ms
 Execution time: 17205.094 ms
(38 rows)

drop view revenue2;
DROP VIEW
COMMIT;
COMMIT