使用utf8的MySQL命令行表列宽

为什么mysql命令行输出utf8列的宽度是非utf列的两倍?例子:

$ mysql -u user --default-character-set=utf8
mysql> select "αβγαβγαβγαβγαβγαβγαβγ";
+--------------------------------------------+
| αβγαβγαβγαβγαβγαβγαβγ                      |
+--------------------------------------------+
| αβγαβγαβγαβγαβγαβγαβγ                      |
+--------------------------------------------+
1 row in set (0.00 sec)

mysql> select "abcabcabcabcabcabcabc";
+-----------------------+
| abcabcabcabcabcabcabc |
+-----------------------+
| abcabcabcabcabcabcabc |
+-----------------------+
1 row in set (0.00 sec)

正如你们所见,第一个表的列宽度是第二个表的两倍,当行开始变宽超过半个屏幕时,这通常会破坏格式。

我在MySQL 14.14和MariaDB 15.1上试过这个。

有没有办法输出与非utf宽度相同的utf8列?

编辑:

MariaDB [(none)]> show variables like 'char%';
+--------------------------+----------------------------+
| Variable_name            | Value                      |
+--------------------------+----------------------------+
| character_set_client     | utf8                       |
| character_set_connection | utf8                       |
| character_set_database   | utf8                       |
| character_set_filesystem | binary                     |
| character_set_results    | utf8                       |
| character_set_server     | utf8                       |
| character_set_system     | utf8                       |
| character_sets_dir       | /usr/share/mysql/charsets/ |
+--------------------------+----------------------------+