library/Benri/Auth/Adapter/DbTable.php
protected function _authenticateCreateSelect()
    {
        $dbSelect = clone $this->getDbSelect();
        $dbSelect->from($this->_tableName)
            ->where("{$this->_identityColumn} = ?", $this->_identity)
            ->limit(1);

        return $dbSelect;
    }
protected function _authenticateCreateSelect()
    {
        $dbSelect = clone $this->getDbSelect();
        $dbSelect->from($this->_tableName)
            ->where("{$this->_identityColumn} = ?", $this->_identity)
            ->limit(1);

        return $dbSelect;
    }
Creates a Zend_Db_Select object that is completely configured to be
queried against the database.

@return Zend_Db_Select
@see http://framework.zend.com/manual/1.12/en/zend.db.select.html Zend_Db_Select