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 = 'MOROCCO'
group by
	s_name
order by
	numwait desc,
	s_name
LIMIT 100;
                                                                        QUERY PLAN                                                                         
-----------------------------------------------------------------------------------------------------------------------------------------------------------
 Limit  (cost=1953848.83..1953848.83 rows=1 width=26)
   ->  Sort  (cost=1953848.83..1953848.83 rows=1 width=26)
         Sort Key: (count(*)), supplier.s_name
         ->  HashAggregate  (cost=1953848.81..1953848.82 rows=1 width=26)
               Group Key: supplier.s_name
               ->  Nested Loop Anti Join  (cost=2443.74..1953848.80 rows=1 width=26)
                     ->  Nested Loop Semi Join  (cost=2443.17..1953847.50 rows=1 width=34)
                           Join Filter: (orders.o_orderkey = l2.l_orderkey)
                           ->  Nested Loop  (cost=2442.61..1432683.79 rows=390074 width=38)
                                 ->  Hash Join  (cost=2442.17..1011260.69 rows=800573 width=34)
                                       Hash Cond: (l1.l_suppkey = supplier.s_suppkey)
                                       ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l1  (cost=0.56..925755.86 rows=20015331 width=8)
                                       ->  Hash  (cost=2391.61..2391.61 rows=4000 width=30)
                                             ->  Nested Loop  (cost=79.29..2391.61 rows=4000 width=30)
                                                   ->  Seq Scan on nation  (cost=0.00..1.31 rows=1 width=4)
                                                         Filter: (n_name = 'MOROCCO'::bpchar)
                                                   ->  Bitmap Heap Scan on supplier  (cost=79.29..2350.29 rows=4000 width=34)
                                                         Recheck Cond: (s_nationkey = nation.n_nationkey)
                                                         ->  Bitmap Index Scan on supplier_s_nationkey_s_suppkey_idx  (cost=0.00..78.29 rows=4000 width=0)
                                                               Index Cond: (s_nationkey = nation.n_nationkey)
                                 ->  Index Scan using orders_o_orderkey_o_orderdate_idx on orders  (cost=0.43..0.52 rows=1 width=4)
                                       Index Cond: (o_orderkey = l1.l_orderkey)
                                       Filter: (o_orderstatus = 'F'::bpchar)
                           ->  Index Scan using lineitem_l_orderkey_idx on lineitem l2  (cost=0.56..1.15 rows=15 width=8)
                                 Index Cond: (l_orderkey = l1.l_orderkey)
                                 Filter: (l_suppkey <> l1.l_suppkey)
                     ->  Index Scan using lineitem_l_orderkey_idx_part1 on lineitem l3  (cost=0.56..0.91 rows=5 width=8)
                           Index Cond: (l_orderkey = l1.l_orderkey)
                           Filter: (l_suppkey <> l1.l_suppkey)
 Planning time: 8.939 ms
(30 rows)

COMMIT;
COMMIT