Method returning_clause

lib/sqlalchemy/sql/compiler.py:5471–5501

(
        self,
        stmt: UpdateBase,
        returning_cols: Sequence[_ColumnsClauseElement],
        *,
        populate_result_map: bool,
        **kw: Any,
    )

        return " FOR UPDATE"

    def returning_clause(
        self,
        stmt: UpdateBase,
        returning_cols: Sequence[_ColumnsClauseElement],
        *,
        populate_result_map: bool,
        **kw: Any,
    ) -> str:
        columns = [
            self._label_returning_column(
                stmt,
                column,
                populate_result_map,
                fallback_label_name=fallback_label_name,
                column_is_repeated=repeated,
                name=name,
                proxy_name=proxy_name,
                **kw,
            )
            for (
                name,
                proxy_name,
                fallback_label_name,
                column,
                repeated,
            ) in stmt._generate_columns_plus_names(
                True, cols=base._select_iterables(returning_cols)
            )
        ]

        return "RETURNING " + ", ".join(columns)

    def limit_clause(self, select, **kw):
        text = ""