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=4818438.60..4818438.61 rows=1 width=26) (actual time=271678.340..271678.365 rows=100 loops=1)
   Buffers: shared hit=9624931 read=1960714 dirtied=568 written=7448, temp read=161721 written=161715
   ->  Sort  (cost=4818438.60..4818438.61 rows=1 width=26) (actual time=271678.336..271678.348 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9624931 read=1960714 dirtied=568 written=7448, temp read=161721 written=161715
         ->  HashAggregate  (cost=4818438.58..4818438.59 rows=1 width=26) (actual time=271670.883..271673.806 rows=4009 loops=1)
               Buffers: shared hit=9624923 read=1960714 dirtied=568 written=7448, temp read=161721 written=161715
               ->  Nested Loop Anti Join  (cost=2662426.47..4818438.58 rows=1 width=26) (actual time=82101.936..271462.490 rows=40100 loops=1)
                     Buffers: shared hit=9624923 read=1960714 dirtied=568 written=7448, temp read=161721 written=161715
                     ->  Nested Loop  (cost=2662426.47..4818423.61 rows=1 width=34) (actual time=82091.759..219405.141 rows=709138 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=6693864 read=1329715 dirtied=568 written=1929, temp read=161721 written=161715
                           ->  Hash Semi Join  (cost=2662426.47..4818421.64 rows=1 width=38) (actual time=82091.557..169926.488 rows=1468596 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 381342
                                 Buffers: shared hit=868073 read=1273114 dirtied=568 written=690, temp read=161721 written=161715
                                 ->  Hash Join  (cost=2441.58..1908229.54 rows=802736 width=34) (actual time=78.071..72389.557 rows=1523257 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=290438 read=781083 written=127
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1822479.27 rows=20075021 width=8) (actual time=0.036..51261.295 rows=37966584 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078719
                                             Buffers: shared hit=288597 read=781069 written=127
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=77.976..77.976 rows=4009 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 251kB
                                             Buffers: shared hit=1838 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.334..74.884 rows=4009 loops=1)
                                                   Buffers: shared hit=1838 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.008..0.015 rows=1 loops=1)
                                                         Filter: (n_name = 'JAPAN'::bpchar)
                                                         Rows Removed by Filter: 24
                                                         Buffers: shared hit=1
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.26..2350.26 rows=4000 width=34) (actual time=2.321..73.372 rows=4009 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1837 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.920..1.920 rows=4009 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1671916.62..1671916.62 rows=60225062 width=8) (actual time=81981.545..81981.545 rows=60045303 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586635kB
                                       Buffers: shared hit=577635 read=492031 dirtied=568 written=563, temp written=153901
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1671916.62 rows=60225062 width=8) (actual time=0.018..54048.300 rows=60045303 loops=1)
                                             Buffers: shared hit=577635 read=492031 dirtied=568 written=563
                           ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.00..1.95 rows=1 width=4) (actual time=0.032..0.032 rows=0 loops=1468596)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5825791 read=56601 written=1239
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.46 rows=5 width=8) (actual time=0.072..0.072 rows=1 loops=709138)
                           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=2931059 read=630999 written=5519
 Total runtime: 271685.985 ms
(56 rows)

COMMIT;
COMMIT