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 = 'JAPAN'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                 QUERY PLAN                                                                                                 
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1964420.39..1964420.39 rows=1 width=26) (actual time=52697.178..52697.202 rows=100 loops=1)
   Buffers: shared hit=13896929 read=735842 dirtied=545 written=5784
   ->  Sort  (cost=1964420.39..1964420.39 rows=1 width=26) (actual time=52697.175..52697.186 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13896929 read=735842 dirtied=545 written=5784
         ->  HashAggregate  (cost=1964420.37..1964420.38 rows=1 width=26) (actual time=52693.833..52695.391 rows=4009 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13896921 read=735842 dirtied=545 written=5784
               ->  Nested Loop Anti Join  (cost=2443.74..1964420.36 rows=1 width=26) (actual time=26.975..52622.010 rows=40085 loops=1)
                     Buffers: shared hit=13896921 read=735842 dirtied=545 written=5784
                     ->  Nested Loop Semi Join  (cost=2443.17..1964419.05 rows=1 width=34) (actual time=24.204..49291.501 rows=709198 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10344622 read=733826 dirtied=545 written=5774
                           ->  Nested Loop  (cost=2442.61..1441919.81 rows=391018 width=38) (actual time=24.172..42866.793 rows=736196 loops=1)
                                 Buffers: shared hit=6804550 read=586671 dirtied=545 written=4498
                                 ->  Hash Join  (cost=2442.17..1017490.67 rows=806194 width=34) (actual time=24.140..32094.760 rows=1523413 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=782170 read=507117 dirtied=295 written=3670
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..931406.44 rows=20154850 width=8) (actual time=0.128..22630.217 rows=37965693 loops=1)
                                             Buffers: shared hit=780329 read=507104 dirtied=295 written=3670
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=23.931..23.931 rows=4009 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 283kB
                                             Buffers: shared hit=1838 read=13
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.757..21.955 rows=4009 loops=1)
                                                   Buffers: shared hit=1838 read=13
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.012..0.021 rows=1 loops=1)
                                                         Filter: (n_name = 'JAPAN'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.29..2350.29 rows=4000 width=34) (actual time=1.736..20.410 rows=4009 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1837
                                                         Buffers: shared hit=1837 read=13
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=1.369..1.369 rows=4009 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13
                                 ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.43..0.52 rows=1 width=4) (actual time=0.006..0.006 rows=0 loops=1523413)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=6022380 read=79554 dirtied=250 written=828
                           ->  Index Scan using lineitem_l_orderkey_idx on lineitem l2  (cost=0.56..1.15 rows=15 width=8) (actual time=0.008..0.008 rows=1 loops=736196)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3540072 read=147155 written=1276
                     ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.56..0.91 rows=5 width=8) (actual time=0.004..0.004 rows=1 loops=709198)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3552299 read=2016 written=10
 Planning time: 16.788 ms
 Execution time: 52697.799 ms
(54 rows)

COMMIT;
COMMIT