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 = 'UNITED STATES'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4813674.91..4813674.92 rows=1 width=26) (actual time=257065.087..257065.107 rows=100 loops=1)
   Buffers: shared hit=9951115 read=1622697 written=17056, temp read=161711 written=161705
   ->  Sort  (cost=4813674.91..4813674.92 rows=1 width=26) (actual time=257065.083..257065.088 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=9951115 read=1622697 written=17056, temp read=161711 written=161705
         ->  HashAggregate  (cost=4813674.89..4813674.90 rows=1 width=26) (actual time=257060.266..257062.122 rows=4004 loops=1)
               Buffers: shared hit=9951107 read=1622697 written=17056, temp read=161711 written=161705
               ->  Nested Loop Anti Join  (cost=2659795.19..4813674.89 rows=1 width=26) (actual time=76993.513..256863.715 rows=40102 loops=1)
                     Buffers: shared hit=9951107 read=1622697 written=17056, temp read=161711 written=161705
                     ->  Nested Loop  (cost=2659795.19..4813659.94 rows=1 width=34) (actual time=76989.450..217179.185 rows=708415 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7006257 read=1009295 written=675, temp read=161711 written=161705
                           ->  Hash Semi Join  (cost=2659795.19..4813657.98 rows=1 width=38) (actual time=76989.347..175322.273 rows=1467112 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 380824
                                 Buffers: shared hit=1154790 read=984302 written=8, temp read=161711 written=161705
                                 ->  Hash Join  (cost=2441.58..1906344.54 rows=801942 width=34) (actual time=38.358..81243.297 rows=1521292 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=698224 read=372260
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1820676.68 rows=20055165 width=8) (actual time=0.053..55391.728 rows=37966418 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078961
                                             Buffers: shared hit=696362 read=372246
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=38.250..38.250 rows=4004 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 251kB
                                             Buffers: shared hit=1859 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.898..35.880 rows=4004 loops=1)
                                                   Buffers: shared hit=1859 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.013..0.014 rows=1 loops=1)
                                                         Filter: (n_name = 'UNITED STATES'::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=1.878..34.357 rows=4004 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1858 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.498..1.498 rows=4004 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1670262.94..1670262.94 rows=60165494 width=8) (actual time=76930.783..76930.783 rows=60045379 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586617kB
                                       Buffers: shared hit=456566 read=612042 written=8, temp written=153903
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1670262.94 rows=60165494 width=8) (actual time=0.054..46767.079 rows=60045379 loops=1)
                                             Buffers: shared hit=456566 read=612042 written=8
                           ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.00..1.95 rows=1 width=4) (actual time=0.027..0.027 rows=0 loops=1467112)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5851467 read=24993 written=667
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.45 rows=5 width=8) (actual time=0.055..0.055 rows=1 loops=708415)
                           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=2944850 read=613402 written=16381
 Total runtime: 257066.988 ms
(56 rows)

COMMIT;
COMMIT