lines-在mysql中怎么把文件里的内容写到表中啊！！！！！

文本内容

1,"zhangsan","f"
2,"lisi","m"
3,"zhaoliu","f"
建表
create table mytable(
id int(20),
name varchar(20),
gender char(1)
);
把文本内容写到表中
load data infile 'f:b.txt' replace into table mytable
fields terminated by ',' enclosed by '"'
lines terminated by '\n'(id,name,gender);

mysql> load data infile 'f:b.txt' replace into table mytable
-> fields terminated by ',' enclosed by '"'
-> lines terminated by '\n'(id,name,gender);
ERROR 1406 (22001): Data too long for column 'gender' at row 1
怎么把文件里的内容写到表中啊！！！！！