def get_column_alias(cls, field_name: str) -> str:
        """
        Returns db alias (column name in db) for given ormar field.
        For fields without alias field name is returned.
        :param field_name: name of the field to get alias from
        :type field_name: str
        :return: alias (db name) if set, otherwise passed name
        :rtype: str
        """
        field = cls.ormar_config.model_fields.get(field_name)
        return field.get_alias() if field is not None else field_name

        Returns db alias (column name in db) for given ormar field.
        For fields without alias field name is returned.
        :param field_name: name of the field to get alias from
        :type field_name: str
        :return: alias (db name) if set, otherwise passed name
        :rtype: str
        
ormar/models/mixins/alias_mixin.py