some_model:
    options:
        require_all_columns: False

    comment: comment for table some_model
    columns:
        field_1:
            comment: comment for field_1
            tests:
                - not_constant
                - dbt_utils.at_least_one

        field_2:
            comment: comment for field_2
            tests:
                - not_constant
                - dbt_utils.at_least_one