mysql sql语句高级写法

将user表的内容，插入到team_member表
INSERT INTO team_member (Nike,HeadImageUrl) 
    SELECT Nike,HeadImageUrl FROM user
        WHERE EXISTS (SELECT * FROM  team_member WHERE team_member.Id=user.Id);

将user表的内容更新到team_member表
update team_member,user set team_member.nike=`user`.nike,team_member.HeadImageUrl=`user`.HeadImageUrl where team_member.userid=`user`.id