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 = 'MOROCCO'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4866383.69..4866383.69 rows=1 width=26) (actual time=338863.487..338863.515 rows=100 loops=1)
   Buffers: shared hit=10448460 read=1088191 written=2587, temp read=161516 written=161510
   ->  Sort  (cost=4866383.69..4866383.69 rows=1 width=26) (actual time=338863.482..338863.490 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10448460 read=1088191 written=2587, temp read=161516 written=161510
         ->  HashAggregate  (cost=4866383.67..4866383.68 rows=1 width=26) (actual time=338856.041..338858.828 rows=3989 loops=1)
               Buffers: shared hit=10448452 read=1088191 written=2587, temp read=161516 written=161510
               ->  Nested Loop Anti Join  (cost=2688905.13..4866383.66 rows=1 width=26) (actual time=82939.119..338632.433 rows=39737 loops=1)
                     Buffers: shared hit=10448452 read=1088191 written=2587, temp read=161516 written=161510
                     ->  Nested Loop  (cost=2688905.13..4866368.45 rows=1 width=34) (actual time=82858.119..266031.120 rows=703343 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7317550 read=687477 written=1722, temp read=161516 written=161510
                           ->  Hash Semi Join  (cost=2688905.13..4866366.45 rows=1 width=38) (actual time=82858.018..201087.471 rows=1458682 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 378061
                                 Buffers: shared hit=1544505 read=618004 written=1369, temp read=161516 written=161510
                                 ->  Hash Join  (cost=2441.58..1927204.34 rows=810854 width=34) (actual time=100.637..103574.927 rows=1512690 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=713131 read=369059 written=62
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1840623.75 rows=20274793 width=8) (actual time=0.047..74456.836 rows=37928218 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22056758
                                             Buffers: shared hit=711274 read=369045 written=62
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=98.981..98.981 rows=3990 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 250kB
                                             Buffers: shared hit=1854 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=6.391..96.330 rows=3990 loops=1)
                                                   Buffers: shared hit=1854 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.029..0.039 rows=1 loops=1)
                                                         Filter: (n_name = 'MOROCCO'::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=6.339..94.722 rows=3990 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1853 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=5.846..5.846 rows=3990 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1688562.80..1688562.80 rows=60824380 width=8) (actual time=82733.981..82733.981 rows=59984976 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 585984kB
                                       Buffers: shared hit=831374 read=248945 written=1307, temp written=153752
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1688562.80 rows=60824380 width=8) (actual time=0.018..53705.952 rows=59984976 loops=1)
                                             Buffers: shared hit=831374 read=248945 written=1307
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.043..0.043 rows=0 loops=1458682)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5773045 read=69473 written=353
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.58 rows=5 width=8) (actual time=0.102..0.102 rows=1 loops=703343)
                           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=3130902 read=400714 written=865
 Total runtime: 338867.291 ms
(56 rows)

COMMIT;
COMMIT