Return a sequence of :class:`_sql.ColumnClause` or :class:`_schema.Column` objects for all columns in this collection.
(self)
| 1903 | return [k for (k, _, _) in self._collection] |
| 1904 | |
| 1905 | def values(self) -> List[_COL_co]: |
| 1906 | """Return a sequence of :class:`_sql.ColumnClause` or |
| 1907 | :class:`_schema.Column` objects for all columns in this |
| 1908 | collection.""" |
| 1909 | return [col for (_, col, _) in self._collection] |
| 1910 | |
| 1911 | def items(self) -> List[Tuple[_COLKEY, _COL_co]]: |
| 1912 | """Return a sequence of (key, column) tuples for all columns in this |