【MySQL基础】mysql 中id相同的数据拼接GROUP_CONCAT分组连接函数

如下所示数据组成，我想按姓名分组组成结果形式：oyy 23#24#25#26.

mysql> select * from student;
+----+------------------+------+
| id | name             | age  |
+----+------------------+------+
|  1 | C34A89EC57276F7C |   33 |
|  2 | 315134Y          |   75 |
|  3 | Z54ZX4Z          |   39 |
|  4 | oyy              |   23 |
|  5 | zyy              |   22 |
|  6 | oyy              |   24 |
|  7 | oyy              |   25 |
|  8 | oyy              |   26 |
+----+------------------+------+

可以使用mysql的函数group_concat(字段 SEPARATOR字符)：

mysql>  select name, GROUP_CONCAT( age SEPARATOR '#') from student group by name;
+------------------+---------------------------------------+
| name            		 | GROUP_CONCAT( age SEPARATOR '#') |
+------------------+---------------------------------------+
| 315134Y         	 | 75                               							 |
| C34A89EC57276F7C | 33                               				 |
| oyy              	  | 23#24#25#26                      						 |
| Z54ZX4Z          | 39                               							 |
| zyy             	  | 22                               								 |
+------------------+----------------------------------+