如何以有意义的方式对行进行排序?
mysqlmysqli database更新于 2024/3/8 16:38:00
为了以有意义的方式对行进行排序，我们可以使用 ORDER BY 子句。假设我们要对下表中的行进行排序 −
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)
以下查询按‘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)
以下查询按‘Grade>对表进行排序。
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)
