_join example

    public function from($name, $cols = '*', $schema = null)
    {
        return $this->_join(self::FROM, $name, null, $cols, $schema);
    }

    /** * Specifies the columns used in the FROM clause. * * The parameter can be a single string or Zend_Db_Expr object, * or else an array of strings or Zend_Db_Expr objects. * * @param array|string|Zend_Db_Expr $cols the columns to select from this table * @param string $correlationName Correlation name of target table. OPTIONAL * * @return Zend_Db_Select this Zend_Db_Select object */