SQL query returning “Operand should contain 1 column(s)”

Question

I\'m currently working on a query which will have all rows from one table, but only limited information from the other.

I\'ve tried working with this query:

Answer 1

Surely no two publishers can share the same id, firstname, lastname, and company!!!

SELECT t.uid
     , t.cid
     , t.id 
  FROM tracking t
  JOIN publishers p
    ON p.id = t.uid;