utf-8-求解mysql数据库第三行错误birthday

create table user
(
id int primary key aotu_increment,
name varchar(40),
password varchar(40),
email varchar(40),
birthday date
)character set utf8 collate utf8_general_ci;
insert into user(name,password,eamil,birthday) values('zs','123456','zs@sina.com','1980-12-04');
insert into user(name,password,eamil,birthday) values('lisi','123456','lisi@sina.com','1981-12-04');
insert into user(name,password,eamil,birthday) values('wangwu','123456','wangwu@sina.com','1979-12-04');