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 = 'SAUDI ARABIA'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                               QUERY PLAN                                                                                               
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=4851961.56..4851961.56 rows=1 width=26) (actual time=137297.886..137297.906 rows=100 loops=1)
   Buffers: shared hit=10204088 read=1392198 dirtied=1175 written=18203, temp read=161729 written=161723
   ->  Sort  (cost=4851961.56..4851961.56 rows=1 width=26) (actual time=137297.882..137297.890 rows=100 loops=1)
         Sort Key: (count(*)), supplier.s_name
         Sort Method: top-N heapsort  Memory: 32kB
         Buffers: shared hit=10204088 read=1392198 dirtied=1175 written=18203, temp read=161729 written=161723
         ->  HashAggregate  (cost=4851961.54..4851961.55 rows=1 width=26) (actual time=137291.461..137293.791 rows=4009 loops=1)
               Buffers: shared hit=10204080 read=1392198 dirtied=1175 written=18203, temp read=161729 written=161723
               ->  Nested Loop Anti Join  (cost=2680954.36..4851961.53 rows=1 width=26) (actual time=46730.531..137137.236 rows=39471 loops=1)
                     Buffers: shared hit=10204080 read=1392198 dirtied=1175 written=18203, temp read=161729 written=161723
                     ->  Nested Loop  (cost=2680954.36..4851946.39 rows=1 width=34) (actual time=46730.168..119326.948 rows=708122 loops=1)
                           Join Filter: (l1.l_orderkey = orders.o_orderkey)
                           Buffers: shared hit=7285419 read=754187 dirtied=1070 written=19, temp read=161729 written=161723
                           ->  Hash Semi Join  (cost=2680954.36..4851944.40 rows=1 width=38) (actual time=46729.707..103473.770 rows=1468912 loops=1)
                                 Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                 Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                 Rows Removed by Join Filter: 382616
                                 Buffers: shared hit=1411770 read=744329 dirtied=1068 written=6, temp read=161729 written=161723
                                 ->  Hash Join  (cost=2441.58..1921497.99 rows=807543 width=34) (actual time=35.437..42779.749 rows=1523692 loops=1)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       Buffers: shared hit=608818 read=470161
                                       ->  Seq Scan on lineitem l1  (cost=0.00..1835175.44 rows=20214812 width=8) (actual time=0.061..28928.841 rows=37965800 loops=1)
                                             Filter: (l_receiptdate > l_commitdate)
                                             Rows Removed by Filter: 22079072
                                             Buffers: shared hit=606973 read=470147
                                       ->  Hash  (cost=2391.58..2391.58 rows=4000 width=30) (actual time=35.240..35.240 rows=4010 loops=1)
                                             Buckets: 1024  Batches: 1  Memory Usage: 251kB
                                             Buffers: shared hit=1842 read=14
                                             ->  Nested Loop  (cost=79.26..2391.58 rows=4000 width=30) (actual time=1.832..33.060 rows=4010 loops=1)
                                                   Buffers: shared hit=1842 read=14
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4) (actual time=0.015..0.020 rows=1 loops=1)
                                                         Filter: (n_name = 'SAUDI ARABIA'::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=1.810..31.384 rows=4010 loops=1)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         Buffers: shared hit=1841 read=14
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.26 rows=4000 width=0) (actual time=1.401..1.401 rows=4010 loops=1)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                                               Buffers: shared read=14
                                 ->  Hash  (cost=1683564.35..1683564.35 rows=60644435 width=8) (actual time=46669.777..46669.777 rows=60044872 loops=1)
                                       Buckets: 4194304  Batches: 4  Memory Usage: 586575kB
                                       Buffers: shared hit=802952 read=274168 dirtied=1068 written=6, temp written=153905
                                       ->  Seq Scan on lineitem l2  (cost=0.00..1683564.35 rows=60644435 width=8) (actual time=0.021..25126.789 rows=60044872 loops=1)
                                             Buffers: shared hit=802952 read=274168 dirtied=1068 written=6
                           ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.00..1.97 rows=1 width=4) (actual time=0.010..0.010 rows=0 loops=1468912)
                                 Index Cond: (o_orderkey = l2.l_orderkey)
                                 Filter: (o_orderstatus = 'F'::bpchar)
                                 Rows Removed by Filter: 1
                                 Buffers: shared hit=5873649 read=9858 dirtied=2 written=13
                     ->  Index Scan using lineitem_l_orderkey_idx on lineitem l3  (cost=0.00..7.55 rows=5 width=8) (actual time=0.024..0.024 rows=1 loops=708122)
                           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=2918661 read=638011 dirtied=105 written=18184
 Total runtime: 137307.032 ms
(56 rows)

COMMIT;
COMMIT