I want to retrieve rows from a dependent table that follows a given criteria in the dependent table.
If you're using table relationships, you can provide a Zend_Db_Table_Select
object as an argument to findDependentRowset
$row->findDependentRowset($table, $rule, $select);
See more info at http://framework.zend.com/manual/en/zend.db.table.relationships.html#zend.db.table.relationships.fetching.dependent