MySQLで昇順に値を作成する方法

Question

このタイプの出力は、この形式のデータベースからtask_nameを取得したい

Task 10 Task 2 Task 3 Task 5........

.

マイクエリはです

 SELECT task_name, section_name, ref_student_id
 FROM scores
 WHERE ref_student_id = '".$studentid."'
    AND section_name = 'sm1'
 GROUP BY task_name

.

だから私はこのように出力したいです..

 Task 2 Task 3 Task 5 Task 10........

.

Answer 1

このを使ってください

"SELECT task_name, section_name, ref_student_id
 FROM scores
WHERE ref_student_id = '1'
AND section_name = 'sm1'
GROUP BY task_name
ORDER BY cast( SUBSTRING( task_name, 5 ) AS unsigned ) ASC"   

.

Answer 2

"select task_name,section_name,ref_student_id from scores where ref_student_id = '".$studentid."' and section_name = 'sm1' GROUP BY task_name order by task_name ASC "

.

昇順

Answer 3

use this

SELECT task_name, section_name, ref_student_id
FROM scores
WHERE ref_student_id = '".$studentid."'
AND section_name = 'sm1'
ORDER BY ltrim(task_name) ASC          //order by should come for ordering....
GROUP BY task_name

instead of

SELECT task_name, section_name, ref_student_id
FROM scores
WHERE ref_student_id = '".$studentid."'
AND section_name = 'sm1'
GROUP BY task_name