No sorry. You need to clarify what you mean as what you said makes no sense. Every table has a primary key. Typically called "id". A foreign key in products is "company_id".

There is no sorting involved. Read the instructions and see the examples again. Not a kata issue.

#Example: longest_consec(["zone", "abigail", "theta", "form", "libe", "zas", "theta", "abigail"], 2) --> "abigailtheta"

In that example abigailtheta and thetaabigail have the same length, but you have to return the first

Your task is to return the first longest string consisting of k consecutive strings taken in the array.