MySQL - specific columns on join?

Question

When making a join (inner, left outer, right outer or whatever), how can I specify which columns on the table to join into the original table?

Consider the following exa

Answer 1

  SELECT User.FirstName, Provider.ID, Provider.YourExtraColumnname, Provider.YourExtraColumnname2 FROM User LEFT OUTER JOIN Provider ON User.ProviderID = Provider.ID