private static function CreateElementary(DBInterfaces\IDatabaseConnection $connection, Selectable $field, Selectable $value, $operator)
    {
        return new self($connection, $field . ' ' . $operator .  ' ' . $value);
    }
private static function CreateElementary(DBInterfaces\IDatabaseConnection $connection, Selectable $field, Selectable $value, $operator)
    {
        return new self($connection, $field . ' ' . $operator .  ' ' . $value);
    }
private static function CreateElementary ( DBInterfaces \ IDatabaseConnection $ connection , Selectable $ field , Selectable $ value , $ operator ) { return new self ( $ connection , $ field . ' ' . $ operator . ' ' . $ value ) ; }
Returns an elementary condition.
@param $field
@param $value
@param $operator
@return Condition
Returns an elementary condition .