anchor.diff:    ///
     /// For more information on queries, see the
     /// [documentation](https://moor.simonbinder.eu/docs/getting-started/writing_queries/).
  -  @protected
  -  @visibleForTesting
     SimpleSelectStatement<T, R> select<T extends Table, R extends DataClass>(
         TableInfo<T, R> table,
         {bool distinct = false}) {
  
positive.code:   ///
    /// If you use variables in your query (for instance with "?"), they will be
    /// bound to the [variables] you specify on this query.
    @protected
    @visibleForTesting
    Selectable<QueryRow> customSelect(String query,
        {List<Variable> variables = const [],
        Set<TableInfo> readsFrom = const {}}) {
  
negative.code:   /// See also:
    ///  - the documentation on [aggregate expressions](https://moor.simonbinder.eu/docs/getting-started/expressions/#aggregate)
    ///  - the documentation on [group by](https://moor.simonbinder.eu/docs/advanced-features/joins/#group-by)
    JoinedSelectStatement<T, R> selectOnly<T extends Table, R extends DataClass>(
      TableInfo<T, R> table, {
      bool distinct = false,
  