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=4813657.46..4813657.46 rows=1 width=26) (actual time=397465.816..397465.837 rows=100 loops=1)
   Buffers: shared hit=10200050 read=1332926 dirtied=333 written=9645, temp read=161677 written=161671
   ->  Sort  (cost=4813657.46..4813657.46 rows=1 width=26) (actual time=397465.812..397465.821 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10200050 read=1332926 dirtied=333 written=9645, temp read=161677 written=161671
         ->  HashAggregate  (cost=4813657.44..4813657.45 rows=1 width=26) (actual time=397460.676..397462.683 rows=3988 loops=1)
               Buffers: shared hit=10200042 read=1332926 dirtied=333 written=9645, temp read=161677 written=161671
               ->  Nested Loop Anti Join  (cost=2659782.62..4813657.43 rows=1 width=26) (actual time=97083.150..397206.670 rows=39961 loops=1)
                     Buffers: shared hit=10200042 read=1332926 dirtied=333 written=9645, temp read=161677 written=161671
                     ->  Nested Loop  (cost=2659782.62..4813642.49 rows=1 width=34) (actual time=97082.723..292329.428 rows=705871 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7317696 read=670790 dirtied=169 written=737, temp read=161677 written=161671
                           ->  Hash Semi Join  (cost=2659782.62..4813640.53 rows=1 width=38) (actual time=97082.653..211357.304 rows=1460360 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 378102
                                 Buffers: shared hit=1538598 read=600473 dirtied=86 written=111, temp read=161677 written=161671
                                 ->  Hash Join  (cost=2441.58..1906339.30 rows=802064 width=34) (actual time=101.881..99637.100 rows=1514372 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=743515 read=326948 written=31
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1820670.80 rows=20055008 width=8) (actual time=0.032..69967.324 rows=37966418 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22078961
                                             Buffers: shared hit=741675 read=326933 written=31
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=101.737..101.737 rows=3988 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 250kB
                                             Buffers: shared hit=1837 read=15
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=2.166..99.058 rows=3988 loops=1)
                                                   Buffers: shared hit=1837 read=15
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.010..0.017 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=2.150..97.347 rows=3988 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1836 read=15
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.781..1.781 rows=3988 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1670258.24..1670258.24 rows=60165024 width=8) (actual time=96958.673..96958.673 rows=60045379 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586617kB
                                       Buffers: shared hit=795083 read=273525 dirtied=86 written=80, temp written=153903
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1670258.24 rows=60165024 width=8) (actual time=0.053..66598.895 rows=60045379 loops=1)
                                             Buffers: shared hit=795083 read=273525 dirtied=86 written=80
                           ->  Index Scan using pk_orders on orders  (cost=0.00..1.95 rows=1 width=4) (actual time=0.053..0.054 rows=0 loops=1460360)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5779098 read=70317 dirtied=83 written=626
                     ->  Index Scan using pk_lineitem on lineitem l3  (cost=0.00..7.45 rows=5 width=8) (actual time=0.147..0.147 rows=1 loops=705871)
                           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=2882346 read=662136 dirtied=164 written=8908
 Total runtime: 397467.297 ms
(56 rows)

COMMIT;
COMMIT