following apex code
public String getLastUpdatedAt() {
String timeStr;
DatadoctorStatus__c last = [SELECT LastUpdated__c FROM DatadoctorStatus__c ORDER BY LastUpdated__c DESC LIMIT 1];
if (last == null){
timeStr = 'Not yet updated.';
} else {
DateTime d = datetime.now();
timeStr = d.format('MMMMM dd, yyyy hh:mm a z');
}
return timeStr;
}
is giving me System.QueryException: List has no rows for assignment to SObject
if there are no (zero) rows in DatadoctorStatus__c SObject.