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 = 'INDIA'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                 QUERY PLAN                                                                                                 
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1954725.79..1954725.79 rows=1 width=26) (actual time=40612.517..40612.538 rows=100 loops=1)
   Buffers: shared hit=13539252 read=1288753 dirtied=1375 written=31820
   ->  Sort  (cost=1954725.79..1954725.79 rows=1 width=26) (actual time=40612.513..40612.530 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=13539252 read=1288753 dirtied=1375 written=31820
         ->  HashAggregate  (cost=1954725.77..1954725.78 rows=1 width=26) (actual time=40609.357..40611.376 rows=4079 loops=1)
               Group Key: supplier.s_name
               Buffers: shared hit=13539244 read=1288753 dirtied=1375 written=31820
               ->  Nested Loop Anti Join  (cost=2443.74..1954725.76 rows=1 width=26) (actual time=31.213..40529.178 rows=40419 loops=1)
                     Buffers: shared hit=13539244 read=1288753 dirtied=1375 written=31820
                     ->  Nested Loop Semi Join  (cost=2443.17..1954724.45 rows=1 width=34) (actual time=29.686..38025.938 rows=720588 loops=1)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           Buffers: shared hit=9930708 read=1285988 dirtied=1375 written=31754
                           ->  Nested Loop  (cost=2442.61..1432058.17 rows=391198 width=38) (actual time=29.590..33090.216 rows=748063 loops=1)
                                 Buffers: shared hit=6349519 read=1121298 dirtied=1375 written=27297
                                 ->  Hash Join  (cost=2442.17..1010617.28 rows=800606 width=34) (actual time=29.491..24294.876 rows=1548911 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=439219 read=827333 dirtied=1373 written=19263
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..925112.78 rows=20015155 width=8) (actual time=0.079..17039.290 rows=37928797 loops=1)
                                             Buffers: shared hit=439214 read=825472 dirtied=1373 written=19263
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30) (actual time=29.341..29.341 rows=4079 loops=1)
                                             Buckets: 4096  Batches: 1  Memory Usage: 287kB
                                             Buffers: shared hit=2 read=1861
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30) (actual time=1.098..27.809 rows=4079 loops=1)
                                                   Buffers: shared hit=2 read=1861
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.008..0.023 rows=1 loops=1)
                                                         Filter: (n_name = 'INDIA'::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=1.081..26.678 rows=4079 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Heap Blocks: exact=1849
                                                         Buffers: shared hit=1 read=1861
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0) (actual time=0.773..0.773 rows=4079 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=13
                                 ->  Index Scan using pk_orders on orders  (cost=0.43..0.52 rows=1 width=4) (actual time=0.005..0.005 rows=0 loops=1548911)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                                       Rows Removed by Filter: 1
                                       Buffers: shared hit=5910300 read=293965 dirtied=2 written=8034
                           ->  Index Scan using pk_lineitem on lineitem l2  (cost=0.56..1.15 rows=15 width=8) (actual time=0.006..0.006 rows=1 loops=748063)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Filter: 0
                                 Buffers: shared hit=3581189 read=164690 written=4457
                     ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.56..0.91 rows=5 width=8) (actual time=0.003..0.003 rows=1 loops=720588)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
                           Rows Removed by Filter: 0
                           Buffers: shared hit=3608536 read=2765 written=66
 Planning time: 12.808 ms
 Execution time: 40612.936 ms
(54 rows)

COMMIT;
COMMIT