MySQL 中国語も”varchar”でOK?

mysql> create table **.**(
    ->     id int,
    ->     word1 varchar(255),
    ->     word2 varchar(255),
    ->     word3 varchar(255),
    ->     word4 varchar(255),
    ->     word5 varchar(255),
    ->     word6 varchar(255),
    ->     word7 varchar(255),
    ->     word8 varchar(255),
    ->     word9 varchar(255),
    ->     word10 varchar(255)
    ->     );
Query OK, 0 rows affected (0.22 sec)

mysql> insert into **.** values
    -> (1, '关键词01','关键词02','关键词03','关键词04','关键词05','关键词06','关键词07','关键词08','关键词09','关键词10');
Query OK, 1 row affected (0.05 sec)

mysql> select * from **;
+------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+
| id   | word1       | word2       | word3       | word4       | word5       | word6       | word7       | word8       | word9       | word10      |
+------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+
|    1 | 关键词01    | 关键词02    | 关键词03    | 关键词04    | 关键词05    | 关键词06    | 关键词07    | 关键词08    | 关键词09    | 关键词10    |
+------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+-------------+
1 row in set (0.00 sec)

大丈夫そうです。CHARは固定長、VARCHARは可変長ですね。