MySQL中ENUM类型怎么用

参考以下说明

mysql> create table week (d ENUM("Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"));
Query OK, 0 rows affected (0.04 sec)

mysql> insert into week (d) values ("Sunday");
Query OK, 1 row affected (0.01 sec)

mysql> insert into week (d) values ("Sun");
ERROR 1265 (01000): Data truncated for column 'd' at row 1
mysql> insert into week (d) values ("xxx");
ERROR 1265 (01000): Data truncated for column 'd' at row 1
mysql> insert into week (d) values ("Monday");
Query OK, 1 row affected (0.01 sec)