public function sql($sql, array $values = array())
    {
        $this->whereSqlConditions[] = $sql;
        $this->arguments = array_merge($this->arguments, $values);
        return $this;
    }
public function sql($sql, array $values = array())
    {
        $this->whereSqlConditions[] = $sql;
        $this->arguments = array_merge($this->arguments, $values);
        return $this;
    }
public function sql ( $ sql , array $ values = array ( ) ) { $ this -> whereSqlConditions [ ] = $ sql ; $ this -> arguments = array_merge ( $ this -> arguments , $ values ) ; return $ this ; }
Adds sql statement into where statement
@param       $sql
@param array $values
@return $this
Adds sql statement into where statement