为什么我的输出“Nama”没有升序 Mysql？

Question

please check this why the column "Nama" didn't get sorted

mysql> SELECT NIM, Nama
    -> FROM mahasiswa
    -> ORDER BY NIM, Nama;

the output

+----------+----------+
| NIM      | Nama     |
+----------+----------+
| 10296055 | Lia A    |
| 10296126 | Siti     |
| 10296130 | Deden A  |
| 10296135 | Ayu      |
| 10296140 | Didit K  |
| 10296145 | Yogi Adi |
| 10296187 | Andriana |
| 10296188 | Rafi     |
+----------+----------+
8 rows in set (0.00 sec)

only the "NIM" gets sorted by Ascending please help me

Answer 1

If you want to order on both the two columns, you need to add an order number to each of the two columns and match these two. You can get the order for each column using the window function ROW_NUMBER :

SELECT t1.NIM, 
       t2.Nama 
FROM       (SELECT NIM,
                   ROW_NUMBER() OVER(ORDER BY NIM) AS ord
            FROM tab                                       ) t1
INNER JOIN (SELECT Nama,
                   ROW_NUMBER() OVER(ORDER BY Nama) AS ord
            FROM tab                                       ) t2
ON t1.ord = t2.ord

Check this SQL Fiddle .