BEGIN;
BEGIN
EXPLAIN
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 = 'CANADA'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                                                QUERY PLAN                                                                                                
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=43053626.33..43053626.33 rows=1 width=26)
   ->  Sort  (cost=43053626.33..43053626.33 rows=1 width=26)
         Sort Key: (pg_catalog.count(*)) DESC, supplier.s_name
         ->  HashAggregate  (cost=43053626.31..43053626.32 rows=1 width=26)
               Group Key: supplier.s_name
               ->  Remote Subquery Scan on all (datanode_1_1,datanode_2_1,datanode_3_1,datanode_4_1,datanode_5_1,datanode_6_1,datanode_7_1,datanode_8_1)  (cost=26576308.43..43053626.30 rows=1 width=26)
                     ->  HashAggregate  (cost=26576308.43..43053626.30 rows=1 width=26)
                           Group Key: supplier.s_name
                           ->  Nested Loop Anti Join  (cost=26576308.43..43053626.30 rows=1 width=26)
                                 ->  Nested Loop  (cost=26576308.31..43053611.33 rows=1 width=34)
                                       ->  Hash Semi Join  (cost=26576308.11..43053603.71 rows=1 width=38)
                                             Hash Cond: (l1.l_orderkey = l2.l_orderkey)
                                             Join Filter: (l2.l_suppkey <> l1.l_suppkey)
                                             ->  Hash Join  (cost=74379.63..14061767.90 rows=8000505 width=34)
                                                   Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                                   ->  Bitmap Heap Scan on lineitem l1  (cost=50007.29..13207343.15 rows=200012629 width=8)
                                                         Recheck Cond: (l_commitdate < l_receiptdate)
                                                         ->  Bitmap Index Scan on lineitem_l_orderkey_idx_part1  (cost=0.00..4.13 rows=200012629 width=0)
                                                   ->  Hash  (cost=23872.35..23872.35 rows=40000 width=30)
                                                         ->  Nested Loop  (cost=750.17..23872.35 rows=40000 width=30)
                                                               ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4)
                                                                     Filter: (n_name = 'CANADA'::bpchar)
                                                               ->  Bitmap Heap Scan on supplier  (cost=750.17..23471.03 rows=40000 width=34)
                                                                     Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                                     ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..740.17 rows=40000 width=0)
                                                                           Index Cond: (s_nationkey = nation.n_nationkey)
                                             ->  Hash  (cost=16657556.88..16657556.88 rows=600037888 width=8)
                                                   ->  Seq Scan on lineitem l2  (cost=0.00..16657556.88 rows=600037888 width=8)
                                       ->  Index Scan using pk_orders on orders  (cost=0.20..7.61 rows=1 width=4)
                                             Index Cond: (o_orderkey = l1.l_orderkey)
                                             Filter: (o_orderstatus = 'F'::bpchar)
                                 ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.12..7.54 rows=2 width=8)
                                       Index Cond: (l_orderkey = l1.l_orderkey)
                                       Filter: (l_suppkey <> l1.l_suppkey)
(34 rows)

COMMIT;
COMMIT