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 = 'CHINA'
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=387065.815..387065.833 rows=100 loops=1)
   Buffers: shared hit=10128174 read=1428613 written=8452, temp read=161679 written=161673
   ->  Sort  (cost=4866383.69..4866383.69 rows=1 width=26) (actual time=387065.812..387065.818 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10128174 read=1428613 written=8452, temp read=161679 written=161673
         ->  HashAggregate  (cost=4866383.67..4866383.68 rows=1 width=26) (actual time=387059.645..387061.919 rows=3988 loops=1)
               Buffers: shared hit=10128166 read=1428613 written=8452, temp read=161679 written=161673
               ->  Nested Loop Anti Join  (cost=2688905.13..4866383.66 rows=1 width=26) (actual time=97514.403..386801.647 rows=39973 loops=1)
                     Buffers: shared hit=10128166 read=1428613 written=8452, temp read=161679 written=161673
                     ->  Nested Loop  (cost=2688905.13..4866368.45 rows=1 width=34) (actual time=97480.100..289728.905 rows=705987 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7003194 read=1008536 written=1155, temp read=161679 written=161673
                           ->  Hash Semi Join  (cost=2688905.13..4866366.45 rows=1 width=38) (actual time=97479.930..207583.166 rows=1460330 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 378149
                                 Buffers: shared hit=1232651 read=929842 written=54, temp read=161679 written=161673
                                 ->  Hash Join  (cost=2441.58..1927204.34 rows=810854 width=34) (actual time=59.129..92252.592 rows=1514425 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=739677 read=342497 written=54
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1840623.75 rows=20274793 width=8) (actual time=0.050..65902.573 rows=37966096 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078937
                                             Buffers: shared hit=737836 read=342483 written=54
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=58.910..58.910 rows=3988 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 250kB
                                             Buffers: shared hit=1838 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.596..56.444 rows=3988 loops=1)
                                                   Buffers: shared hit=1838 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.008..0.014 rows=1 loops=1)
                                                         Filter: (n_name = 'CHINA'::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=2.582..54.926 rows=3988 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1837 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=2.217..2.217 rows=3988 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=97387.212..97387.212 rows=60045033 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=492974 read=587345, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1688562.80 rows=60824380 width=8) (actual time=0.034..68387.592 rows=60045033 loops=1)
                                             Buffers: shared hit=492974 read=587345
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.98 rows=1 width=4) (actual time=0.054..0.055 rows=0 loops=1460330)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5770543 read=78694 written=1101
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.58 rows=5 width=8) (actual time=0.136..0.136 rows=1 loops=705987)
                           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=3124972 read=420077 written=7297
 Total runtime: 387066.912 ms
(56 rows)

COMMIT;
COMMIT