sql判断某个字段是否为空 - yangzailu

sql判断某个字段是否为空

判断sql某个字段是否为NULL

public function dataNull($id){
        $sql = \'SELECT * FROM `vvt_company_funcs_user` WHERE ISNULL(`last_login_time`) AND id =\'. $id;
        $res = $this->query($sql);
        return $res;
    }