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。