SELECT * FROM yzl_product WHERE ( FatherID=) AND (ISNULL(DoDelete) OR DoDelete='' OR DoDelete='No') ORDER BY  
            CASE 
                WHEN Sort > 0 THEN 0
                ELSE 1
            END,
            Sort ASC,
            AddTime DESC;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 (ISNULL(DoDelete) OR DoDelete='' OR DoDelete='No') ORDER BY  
           ' at line 1