如果空结果集，如何返回带有数据的行全部为NULL？

Question

如果MYSQL返回空结果集，如何返回数据全部为NULL的行？

带有此数据的

article表，

id     title     url
1      abc       abc

查询，

SELECT*
FROM article
WHERE id = '2'

结果，

MySQL returned an empty result set (i.e. zero rows). (Query took 0.0010 sec)

我需要的结果，

id     title     url
NULL   NULL      NULL

有可能吗？

Answer 1

select t2.*
from (select 1) t1 left join
article t2 on t2.id = 2

Answer 2

SELECT *
  FROM article
 WHERE id = '2'
union all
select null, null, null
  from dual
 where not exists (select 1 from article where id = '2')