SQL: set existing column as Primary Key in MySQL

Question

I have a database with 3 columns:

id, name, somethingelse  

This table has no index set and i am getting \"No index defined!\" in phpmyadmin

Answer 1

Either run in SQL:

ALTER TABLE tableName
  ADD PRIMARY KEY (id)           ---or Drugid, whichever you want it to be PK

or use the PHPMyAdmin interface (Table Structure)