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 = 'GERMANY'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4804053.26..4804053.26 rows=1 width=26) (actual time=351236.143..351236.161 rows=100 loops=1)
   Buffers: shared hit=10687639 read=962343 dirtied=24 written=2400, temp read=161624 written=161618
   ->  Sort  (cost=4804053.26..4804053.26 rows=1 width=26) (actual time=351236.140..351236.146 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10687639 read=962343 dirtied=24 written=2400, temp read=161624 written=161618
         ->  HashAggregate  (cost=4804053.24..4804053.25 rows=1 width=26) (actual time=351230.998..351233.133 rows=4049 loops=1)
               Buffers: shared hit=10687631 read=962343 dirtied=24 written=2400, temp read=161624 written=161618
               ->  Nested Loop Anti Join  (cost=2654478.55..4804053.23 rows=1 width=26) (actual time=80125.991..350981.255 rows=40107 loops=1)
                     Buffers: shared hit=10687631 read=962343 dirtied=24 written=2400, temp read=161624 written=161618
                     ->  Nested Loop  (cost=2654478.55..4804038.33 rows=1 width=34) (actual time=80115.050..256675.298 rows=714640 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7534509 read=526962 dirtied=24 written=369, temp read=161624 written=161618
                           ->  Hash Semi Join  (cost=2654478.55..4804036.38 rows=1 width=38) (actual time=80114.983..177517.736 rows=1479615 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 384222
                                 Buffers: shared hit=1691111 read=443688 dirtied=24 written=134, temp read=161624 written=161618
                                 ->  Hash Join  (cost=2441.58..1902539.02 rows=800463 width=34) (actual time=135.937..78963.291 rows=1534314 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=877380 read=190944 written=115
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1817036.65 rows=20014977 width=8) (actual time=0.029..55947.463 rows=37928797 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22056532
                                             Buffers: shared hit=876131 read=190344 written=115
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=135.842..135.842 rows=4049 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 254kB
                                             Buffers: shared hit=1246 read=600
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=4.065..133.283 rows=4049 loops=1)
                                                   Buffers: shared hit=1246 read=600
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.007..0.020 rows=1 loops=1)
                                                         Filter: (n_name = 'GERMANY'::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=4.052..131.754 rows=4049 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1245 read=600
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=3.425..3.425 rows=4049 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared hit=2 read=12
                                 ->  Hash  (cost=1666924.32..1666924.32 rows=60044932 width=8) (actual time=79960.075..79960.075 rows=59985329 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586039kB
                                       Buffers: shared hit=813731 read=252744 dirtied=24 written=19, temp written=153747
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1666924.32 rows=60044932 width=8) (actual time=0.026..52060.311 rows=59985329 loops=1)
                                             Buffers: shared hit=813731 read=252744 dirtied=24 written=19
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.94 rows=1 width=4) (actual time=0.052..0.052 rows=0 loops=1479615)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5843398 read=83274 written=235
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.42 rows=5 width=8) (actual time=0.130..0.130 rows=1 loops=714640)
                           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=3153122 read=435381 written=2031
 Total runtime: 351237.695 ms
(56 rows)

COMMIT;
COMMIT