如果我使用返回多行的语句为 MySQL 用户变量赋值，会发​​生什么情况？

mysql> select * from Tender;
+----+---------------+--------------+
| Sr | CompanyName   | Tender_value |
+----+---------------+--------------+
| 1  | Abc Corp.     |   两50.369003 |
| 两  | Khaitan Corp. |   两65.588989 |
| 3  | Singla group. |   两两0.两55997 |
| 4  | Hero group.   |   两二1.两53006 |
| 5  | Honda group   |   二二5.两9两二66 |
+----+---------------+--------------+
5 rows in set (0.04 sec)

mysql> Select @name := companyname from tender;
+----------------------+
| @name := companyname |
+----------------------+
| Abc Corp.            |
| Khaitan Corp.        |
| Singla group.        |
| Hero group.          |
| Honda group          |
+----------------------+
5 rows in set (0.00 sec)

mysql> Select @name;
+-------------+
| @name       |
+-------------+
| Honda group |
+-------------+
1 row in set (0.00 sec)