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 '(行銷)(電子報行銷)) AND application = 'blog' ORDER BY FIELD(tags_id, (電' at line 1 in this syntax SELECT tags_id,name FROM tags WHERE tags_id IN ((電子報)(行銷)(電子報行銷)) AND application = 'blog' ORDER BY FIELD(tags_id, (電子報)(行銷)(電子報行銷)) ASC LIMIT 30