public function addSelect(string ...$select): Select
    {
        $this->select = array_merge($this->select, $select);
        return $this;
    }
public function addSelect(string ...$select): Select
    {
        $this->select = array_merge($this->select, $select);
        return $this;
    }
public function addSelect ( string ... $ select ) : Select { $ this -> select = array_merge ( $ this -> select , $ select ) ; return $ this ; }
Adds an item that is to be returned in the query result.

Example
<code>
$sb = new Select();
$sb
->select('u.id')
->addSelect('p.id')
->from('users', 'u')
->leftJoin('u', 'phone', 'u.id = p.user_id');
</code>

@param  string[] $select the selection expression

@return Select instance
Adds an item that is to be returned in the query result .