Function _process_multiparam_default_bind

lib/sqlalchemy/sql/crud.py:1429–1459

(
    compiler: SQLCompiler,
    stmt: ValuesBase,
    c: KeyedColumnElement[Any],
    index: int,
    kw: Dict[str, Any],
)

def _process_multiparam_default_bind(
    compiler: SQLCompiler,
    stmt: ValuesBase,
    c: KeyedColumnElement[Any],
    index: int,
    kw: Dict[str, Any],
) -> str:
    if not c.default:
        raise exc.CompileError(
            "INSERT value for column %s is explicitly rendered as a bound"
            "parameter in the VALUES clause; "
            "a Python-side value or SQL expression is required" % c
        )
    elif default_is_clause_element(c.default):
        return compiler.process(c.default.arg.self_group(), **kw)
    elif c.default.is_sequence:
        # these conditions would have been established
        # by append_param_insert_(?:hasdefault|pk_returning|pk_no_returning)
        # in order for us to be here, so these don't need to be
        # checked
        # assert compiler.dialect.supports_sequences and (
        #    not c.default.optional
        #    or not compiler.dialect.sequences_optional
        # )
        return compiler.process(c.default, **kw)
    else:
        col = _multiparam_column(c, index)
        assert isinstance(stmt, dml.Insert)
        return _create_insert_prefetch_bind_param(
            compiler, col, process=True, **kw
        )


def _get_update_multitable_params(