如何以有意义的方式对行进行排序？

mysql> Select * from Student; +--------+--------+--------+ | Name | RollNo | Grade | +--------+--------+--------+ | Gaurav | 100 | B.tech | | Aarav | 150 | M.SC | | Aryan | 165 | M.tech | +--------+--------+--------+ 3 rows in set (0.00 sec)

下面的查询按照 ‘Name’ 对表进行排序。

mysql> Select * from student order by name;
+--------+--------+--------+
| Name   | RollNo | Grade  |
+--------+--------+--------+
| Aarav  |    150 | M.SC   |
| Aryan  |    165 | M.tech |
| Gaurav |    100 | B.tech |
+--------+--------+--------+
3 rows in set (0.00 sec)

下面的查询按'Grade'对表进行了排序。

mysql> Select * from student order by Grade;
+--------+--------+--------+
| Name   | RollNo | Grade  |
+--------+--------+--------+
| Gaurav |    100 | B.tech |
| Aarav  |    150 | M.SC   |
| Aryan  |    165 | M.tech |
+--------+--------+--------+
3 rows in set (0.00 sec)

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