/**
* Fetches all SQL result rows as an array of key-value pairs.
*
* The first column is the key, the second column is the
* value.
*
* @param string|EhrlichAndreas_Db_Select|Zend_Db_Select $sql
* An SQL SELECT statement.
* @param mixed $bind
* Data to bind into SELECT placeholders.
* @return array
*/
public function fetchPairs($sql, $bind = array())
{
return $this->adapter->fetchPairs($sql, $bind);
}