BEGIN;
BEGIN
create or replace view revenue9 (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,
	revenue9
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue9
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2373593.05..2378691.02 rows=3767 width=79) (actual time=35229.412..35229.418 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue9.supplier_no)
   Buffers: shared hit=710220 read=616521 written=14
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1178136.09..1178136.10 rows=1 width=8) (actual time=17495.287..17495.287 rows=1 loops=1)
           Buffers: shared hit=317488 read=345631 written=10
           ->  HashAggregate  (cost=1178051.33..1178089.00 rows=3767 width=12) (actual time=17427.567..17478.268 rows=100000 loops=1)
                 Buffers: shared hit=317488 read=345631 written=10
                 ->  Bitmap Heap Scan on lineitem  (cost=48204.90..1155255.16 rows=2279617 width=12) (actual time=2400.778..13554.842 rows=2250107 loops=1)
                       Recheck Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=317488 read=345631 written=10
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47635.00 rows=2279617 width=0) (actual time=2054.033..2054.033 rows=2263423 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 hit=2 read=6143
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.057..12.968 rows=17858 loops=1)
         Buffers: shared hit=502
   ->  Sort  (cost=1195456.96..1195466.38 rows=3767 width=12) (actual time=35213.402..35213.405 rows=1 loops=1)
         Sort Key: revenue9.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=709718 read=616521 written=14
         ->  Subquery Scan on revenue9  (cost=1195148.46..1195233.21 rows=3767 width=12) (actual time=35202.798..35213.356 rows=1 loops=1)
               Buffers: shared hit=709718 read=616521 written=14
               ->  HashAggregate  (cost=1195148.46..1195195.54 rows=3767 width=12) (actual time=35202.795..35213.350 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=709718 read=616521 written=14
                     ->  Bitmap Heap Scan on lineitem  (cost=48204.90..1155255.16 rows=2279617 width=12) (actual time=1930.975..13201.780 rows=2250107 loops=1)
                           Recheck Cond: ((l_shipdate >= '1993-04-01'::date) AND (l_shipdate < '1993-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=392230 read=270890 written=4
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47635.00 rows=2279617 width=0) (actual time=1615.385..1615.385 rows=2263423 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 hit=3 read=6143
 Total runtime: 35243.656 ms
(33 rows)

drop view revenue9;
DROP VIEW
COMMIT;
COMMIT