MySQL: Loop over all entries to update parent table

I have a parent table "user" and a child table "profile". For every profile there also exists a user with the same id, but not the other way round. profiles have names, and now I added the property name also to users.

I would like to fire an MySQL-Statements that loops over all profiles, grabs the user with the same id, and updates the column name of the user开发者_Python百科, with the name of the profile.

How can I do that? I never used loops in an SQL-Statement before..

---

@KenDowns was right, you dont need forloops. But his statement had a small flaw. Here is the correct one, that worked for me (you dont need a from-clause):

UPDATE user, profile
SET user.name = profile.name
WHERE profile.id = user.id

---

SQL is set-based and does not require loops for things like this:

UPDATE profiles
   set name = user.name
  from user
 where profiles.userId = user.userId