Codeigniter SQL语句

Question

我在以下sql语句中遇到了一些问题:

$query= $this->db->get_where('navigation', 'linkname IS NOT NULL 
                             AND parent IS NULL 
                             AND type="main" //this doesn't work!!
                             AND ORDER BY sortnumber ASC');

如何以合理的方式将type ="main"添加到此语句中？非常感谢!

Answer 1

我认为错误是你应该只写ORDER BY,而不是AND ORDER BY.