BEGIN;
BEGIN
EXPLAIN (ANALYZE, BUFFERS)
select
	s_name,
	count(*) as numwait
from
	supplier,
	lineitem l1,
	orders,
	nation
where
	s_suppkey = l1.l_suppkey
	and o_orderkey = l1.l_orderkey
	and o_orderstatus = 'F'
	and l1.l_receiptdate > l1.l_commitdate
	and exists (
		select
			*
		from
			lineitem l2
		where
			l2.l_orderkey = l1.l_orderkey
			and l2.l_suppkey <> l1.l_suppkey
	)
	and not exists (
		select
			*
		from
			lineitem l3
		where
			l3.l_orderkey = l1.l_orderkey
			and l3.l_suppkey <> l1.l_suppkey
			and l3.l_receiptdate > l3.l_commitdate
	)
	and s_nationkey = n_nationkey
	and n_name = 'GERMANY'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4808905.37..4808905.38 rows=1 width=26) (actual time=218617.233..218617.251 rows=100 loops=1)
   Buffers: shared hit=9666314 read=1996246 dirtied=2 written=10005, temp read=161786 written=161780
   ->  Sort  (cost=4808905.37..4808905.38 rows=1 width=26) (actual time=218617.229..218617.235 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9666314 read=1996246 dirtied=2 written=10005, temp read=161786 written=161780
         ->  HashAggregate  (cost=4808905.35..4808905.36 rows=1 width=26) (actual time=218611.084..218613.381 rows=4049 loops=1)
               Buffers: shared hit=9666306 read=1996246 dirtied=2 written=10005, temp read=161786 written=161780
               ->  Nested Loop Anti Join  (cost=2657156.65..4808905.35 rows=1 width=26) (actual time=71114.719..218407.045 rows=40144 loops=1)
                     Buffers: shared hit=9666306 read=1996246 dirtied=2 written=10005, temp read=161786 written=161780
                     ->  Nested Loop  (cost=2657156.65..4808890.42 rows=1 width=34) (actual time=71110.403..180535.385 rows=715297 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=6690349 read=1379136 written=85, temp read=161786 written=161780
                           ->  Hash Semi Join  (cost=2657156.65..4808888.47 rows=1 width=38) (actual time=71107.994..145489.834 rows=1481079 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 384589
                                 Buffers: shared hit=892349 read=1244592 written=14, temp read=161786 written=161780
                                 ->  Hash Join  (cost=2441.58..1904456.16 rows=801410 width=34) (actual time=39.865..56316.106 rows=1535824 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=517692 read=551703 written=14
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1818868.26 rows=20035260 width=8) (actual time=0.063..38743.663 rows=37966905 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078698
                                             Buffers: shared hit=516805 read=550741 written=14
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=39.757..39.757 rows=4049 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 254kB
                                             Buffers: shared hit=884 read=962
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.596..37.385 rows=4049 loops=1)
                                                   Buffers: shared hit=884 read=962
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.007..0.018 rows=1 loops=1)
                                                         Filter: (n_name = 'GERMANY'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=34) (actual time=2.581..35.842 rows=4049 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=883 read=962
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.958..1.958 rows=4049 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1668603.81..1668603.81 rows=60105781 width=8) (actual time=71004.224..71004.224 rows=60045603 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586633kB
                                       Buffers: shared hit=374657 read=692889, temp written=153903
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1668603.81 rows=60105781 width=8) (actual time=0.075..29638.715 rows=60045603 loops=1)
                                             Buffers: shared hit=374657 read=692889
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.94 rows=1 width=4) (actual time=0.022..0.022 rows=0 loops=1481079)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5798000 read=134544 written=71
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.44 rows=5 width=8) (actual time=0.052..0.052 rows=1 loops=715297)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: ((l_receiptdate > l_commitdate) AND (l_suppkey <> l1.l_suppkey))
                           Rows Removed by Filter: 1
                           Buffers: shared hit=2975957 read=617110 dirtied=2 written=9920
 Total runtime: 218618.586 ms
(56 rows)

COMMIT;
COMMIT