BEGIN;
BEGIN
create or replace view revenue6 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1994-05-01'
		and l_shipdate < date'1994-05-01' + 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,
	revenue6
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue6
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2362341.31..2367438.95 rows=3745 width=79) (actual time=33947.251..33947.254 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue6.supplier_no)
   Buffers: shared hit=475376 read=846958 dirtied=353 written=354
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1172621.78..1172621.79 rows=1 width=8) (actual time=16994.317..16994.317 rows=1 loops=1)
           Buffers: shared hit=143955 read=516232 written=5
           ->  HashAggregate  (cost=1172537.51..1172574.96 rows=3745 width=12) (actual time=16916.993..16983.411 rows=100000 loops=1)
                 Buffers: shared hit=143955 read=516232 written=5
                 ->  Bitmap Heap Scan on lineitem  (cost=47677.96..1150036.89 rows=2250062 width=12) (actual time=2081.532..12840.952 rows=2247211 loops=1)
                       Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=143955 read=516232 written=5
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47115.45 rows=2250062 width=0) (actual time=1668.934..1668.934 rows=2251993 loops=1)
                             Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                             Buffers: shared read=6138
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.087..29.402 rows=71902 loops=1)
         Buffers: shared hit=1958 read=1
   ->  Sort  (cost=1189719.52..1189728.88 rows=3745 width=12) (actual time=33910.386..33910.387 rows=1 loops=1)
         Sort Key: revenue6.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=473418 read=846957 dirtied=353 written=354
         ->  Subquery Scan on revenue6  (cost=1189412.98..1189497.24 rows=3745 width=12) (actual time=33898.380..33910.358 rows=1 loops=1)
               Buffers: shared hit=473418 read=846957 dirtied=353 written=354
               ->  HashAggregate  (cost=1189412.98..1189459.79 rows=3745 width=12) (actual time=33898.378..33910.354 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=473418 read=846957 dirtied=353 written=354
                     ->  Bitmap Heap Scan on lineitem  (cost=47677.96..1150036.89 rows=2250062 width=12) (actual time=2053.247..12749.784 rows=2247211 loops=1)
                           Recheck Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=329463 read=330725 dirtied=353 written=349
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..47115.45 rows=2250062 width=0) (actual time=1655.928..1655.928 rows=2251993 loops=1)
                                 Index Cond: ((l_shipdate >= '1994-05-01'::date) AND (l_shipdate < '1994-07-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=3 read=6136 written=6
 Total runtime: 33962.899 ms
(33 rows)

drop view revenue6;
DROP VIEW
COMMIT;
COMMIT