Method update_from_clause

lib/sqlalchemy/dialects/postgresql/base.py:2501–2508

(
        self, update_stmt, from_table, extra_froms, from_hints, **kw
    )

        return "ON CONFLICT %s DO UPDATE SET %s" % (target_text, action_text)

    def update_from_clause(
        self, update_stmt, from_table, extra_froms, from_hints, **kw
    ):
        kw["asfrom"] = True
        return "FROM " + ", ".join(
            t._compiler_dispatch(self, fromhints=from_hints, **kw)
            for t in extra_froms
        )

    def delete_extra_from_clause(
        self, delete_stmt, from_table, extra_froms, from_hints, **kw