扩展Zend DB表以包含介于和之间的限制

我现在的想法是

class Model_DbTable_Tablelist extends Zend_Db_Table_Abstract
{
    protected $_name = 'mytable';

    $select = $this->select()
                    ->setIntegrityCheck(false)
                    ->from('mytable',
                        array('MyCol1', 'MyDate'));

}

我想把它扩展成等价于下面的查询

SELECT MyCol1,MyDate FROM mytable
WHERE MyDate BETWEEN '2008-04-03' AND '2009-01-02'
LIMIT 0,20