| 253 | self._no_parameters = False |
| 254 | |
| 255 | def _process_select_values(self, statement: ValuesBase) -> None: |
| 256 | assert statement._select_names is not None |
| 257 | parameters: MutableMapping[_DMLColumnElement, Any] = { |
| 258 | name: Null() for name in statement._select_names |
| 259 | } |
| 260 | |
| 261 | if self._no_parameters: |
| 262 | self._no_parameters = False |
| 263 | self._dict_parameters = parameters |
| 264 | else: |
| 265 | # this condition normally not reachable as the Insert |
| 266 | # does not allow this construction to occur |
| 267 | assert False, "This statement already has parameters" |
| 268 | |
| 269 | def _no_multi_values_supported(self, statement: ValuesBase) -> NoReturn: |
| 270 | raise exc.InvalidRequestError( |