using subquery instead of the tablename

Question

Table Meta:
-------------------------------------
type                  tab_name
new                   tab_news
sports                tab_sps

Table tab_news
------
id

Table tab_sps
-------------------
id
xx

Now I want to use

SELECT id 
  FROM (SELECT tab_name 
          FROM Meta 
         WHERE type = 'news');

But it does not work, any ideas?