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 = 'BRAZIL'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                 QUERY PLAN                                                                                                 
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1975109.14..1975109.15 rows=1 width=26) (actual time=48446.152..48446.168 rows=100 loops=1)
   Buffers: shared hit=13722650 read=842975 dirtied=300 written=9950
   ->  Sort  (cost=1975109.14..1975109.15 rows=1 width=26) (actual time=48446.148..48446.156 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13722650 read=842975 dirtied=300 written=9950
         ->  HashAggregate  (cost=1975109.12..1975109.13 rows=1 width=26) (actual time=48442.766..48444.896 rows=3995 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13722642 read=842975 dirtied=300 written=9950
               ->  Nested Loop Anti Join  (cost=2443.74..1975109.12 rows=1 width=26) (actual time=16.951..48361.546 rows=39562 loops=1)
                     Buffers: shared hit=13722642 read=842975 dirtied=300 written=9950
                     ->  Nested Loop Semi Join  (cost=2443.17..1975107.81 rows=1 width=34) (actual time=16.882..45412.691 rows=704970 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=10191762 read=840888 dirtied=300 written=9928
                           ->  Nested Loop  (cost=2442.61..1448229.53 rows=394263 width=38) (actual time=16.863..39758.075 rows=731709 loops=1)
                                 Buffers: shared hit=6680876 read=687329 dirtied=300 written=8313
                                 ->  Hash Join  (cost=2442.17..1022086.11 rows=809402 width=34) (actual time=16.700..30182.327 rows=1516347 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=688560 read=605980 dirtied=300 written=6904
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..935669.03 rows=20235055 width=8) (actual time=0.139..20730.976 rows=37966174 loops=1)
                                             Buffers: shared hit=686708 read=605967 dirtied=300 written=6904
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=16.497..16.497 rows=3995 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 282kB
                                             Buffers: shared hit=1849 read=13
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.316..15.349 rows=3995 loops=1)
                                                   Buffers: shared hit=1849 read=13
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.010..0.023 rows=1 loops=1)
                                                         Filter: (n_name = 'BRAZIL'::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=1.299..14.502 rows=3995 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1848
                                                         Buffers: shared hit=1848 read=13
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.993..0.993 rows=3995 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=1516347)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=5992316 read=81349 written=1409
                           ->  Index Scan using lineitem_l_orderkey_idx on lineitem l2  (cost=0.56..1.15 rows=15 width=8) (actual time=0.007..0.007 rows=1 loops=731709)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3510886 read=153559 written=1615
                     ->  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=704970)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3530880 read=2087 written=22
 Planning time: 11.267 ms
 Execution time: 48446.671 ms
(54 rows)

COMMIT;
COMMIT