public function columns(string ...$column)
    {
        $this->changed = true;
        $this->columns = $column;

        return $this;
    }
public function columns(string ...$column)
    {
        $this->changed = true;
        $this->columns = $column;

        return $this;
    }
public function columns ( string ... $ column ) { $ this -> changed = true ; $ this -> columns = $ column ; return $ this ; }
Set the columns for the SELECT query.

@param string $column
@return self
Set the columns for the SELECT query .