1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'and cd.language_id='1' and c.categories_status='1' order by c.sort_order, cd.cat' at line 2
in:
[select c.categories_id, cd.categories_name from categories c, categories_description cd where c.categories_id=cd.categories_id and c.parent_id= and cd.language_id='1' and c.categories_status='1' order by c.sort_order, cd.categories_name ]