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 = 'RUSSIA'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4866411.73..4866411.73 rows=1 width=26) (actual time=169570.865..169570.883 rows=100 loops=1)
   Buffers: shared hit=10531767 read=1095330 dirtied=6 written=3196, temp read=161742 written=161736
   ->  Sort  (cost=4866411.73..4866411.73 rows=1 width=26) (actual time=169570.861..169570.869 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10531767 read=1095330 dirtied=6 written=3196, temp read=161742 written=161736
         ->  HashAggregate  (cost=4866411.71..4866411.72 rows=1 width=26) (actual time=169566.546..169568.148 rows=4021 loops=1)
               Buffers: shared hit=10531759 read=1095330 dirtied=6 written=3196, temp read=161742 written=161736
               ->  Nested Loop Anti Join  (cost=2688919.64..4866411.70 rows=1 width=26) (actual time=53776.117..169419.816 rows=39456 loops=1)
                     Buffers: shared hit=10531759 read=1095330 dirtied=6 written=3196, temp read=161742 written=161736
                     ->  Nested Loop  (cost=2688919.64..4866396.49 rows=1 width=34) (actual time=53776.008..149958.104 rows=710273 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7412402 read=647266 dirtied=6 written=689, temp read=161742 written=161736
                           ->  Hash Semi Join  (cost=2688919.64..4866394.49 rows=1 width=38) (actual time=53775.939..130248.162 rows=1472282 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 381612
                                 Buffers: shared hit=1575038 read=587466 dirtied=4 written=15, temp read=161742 written=161736
                                 ->  Hash Join  (cost=2441.58..1927213.44 rows=810999 width=34) (actual time=27.598..61103.032 rows=1526897 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=581277 read=500908 dirtied=4 written=15
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1840630.70 rows=20274979 width=8) (actual time=0.038..41452.947 rows=37966096 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078937
                                             Buffers: shared hit=579424 read=500895 dirtied=4 written=15
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=27.504..27.504 rows=4021 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 252kB
                                             Buffers: shared hit=1850 read=13
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.291..26.011 rows=4021 loops=1)
                                                   Buffers: shared hit=1850 read=13
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.010..0.015 rows=1 loops=1)
                                                         Filter: (n_name = 'RUSSIA'::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=1.276..25.057 rows=4021 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1849 read=13
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=0.975..0.975 rows=4021 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=1 read=13
                                 ->  Hash  (cost=1688568.36..1688568.36 rows=60824936 width=8) (actual time=53283.890..53283.890 rows=60045033 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=993761 read=86558, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1688568.36 rows=60824936 width=8) (actual time=0.031..28274.079 rows=60045033 loops=1)
                                             Buffers: shared hit=993761 read=86558
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.012..0.012 rows=0 loops=1472282)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5837364 read=59800 dirtied=2 written=674
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.58 rows=5 width=8) (actual time=0.026..0.026 rows=1 loops=710273)
                           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=3119357 read=448064 written=2507
 Total runtime: 169577.432 ms
(56 rows)

COMMIT;
COMMIT