text: SET DATABASE TO Goliath;
  
  CREATE TABLE IF NOT EXISTS UserTableWithId (
    -- Key columns
    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
    username STRING NOT NULL UNIQUE,
    -- Data columns
    key STRING NOT NULL UNIQUE
  );
  
  INSERT INTO UserTableWithId (username, key) SELECT username, key FROM UserTable;
  
  DROP TABLE UserTable;
  
  ALTER TABLE IF EXISTS UserTableWithId RENAME TO UserTable;