php - 查询结果错误

Question

下面的查询在我的 codeigniter 项目中使用并且只给我一条记录，但是当我在数据库中调用这个查询并给我 3 条记录时。

$query = "SELECT `teacher_subjects`.*, `subjects`.* FROM `teacher_subjects` JOIN `subjects` ON `subjects`.`id` = `teacher_subjects`.`subject_id` WHERE `teacher_subjects`.`session_id` = 11 AND `teacher_subjects`.`class_section_id` = 5"; 

$query = $this->db->query($query);

Answer 1

试试这个，

$query_statement = "SELECT `teacher_subjects`.*, `subjects`.* FROM `teacher_subjects` JOIN `subjects` ON `subjects`.`id` = `teacher_subjects`.`subject_id` WHERE `teacher_subjects`.`session_id` = 11 AND `teacher_subjects`.`class_section_id` = 5"; 

$query = $this->db->query($query_statement);
return ($query->num_rows() > 0) ? $query->result() : false;