Method from_statement

lib/sqlalchemy/orm/query.py:2772–2793

Execute the given SELECT statement and return results. This method bypasses all internal statement compilation, and the statement is executed without modification. The statement is typically either a :func:`_expression.text` or :func:`_expression.select` construct,

(self, statement: roles.SelectStatementRole)

    @_generative
    @_assertions(_no_clauseelement_condition)
    def from_statement(self, statement: roles.SelectStatementRole) -> Self:
        """Execute the given SELECT statement and return results.

        This method bypasses all internal statement compilation, and the
        statement is executed without modification.

        The statement is typically either a :func:`_expression.text`
        or :func:`_expression.select` construct, and should return the set
        of columns
        appropriate to the entity class represented by this
        :class:`_query.Query`.

        .. seealso::

            :meth:`_sql.Select.from_statement` - v2 comparable method.

        """
        _statement = coercions.expect(
            roles.SelectStatementRole, statement, apply_propagate_attrs=self
        )
        self._statement = _statement
        return self

    def first(self) -> Optional[_T]:
        """Return the first result of this ``Query`` or