mySQL error with query SELECT * FROM `nucleus_blog` WHERE `bnumber`=: 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 '' at line 1

mySQL error with query SELECT * FROM `nucleus_category` WHERE `cblog`= ORDER BY `cname` ASC: 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 'ORDER BY `cname` ASC' at line 1