API to :meth:`ChangesetTable.rename`.

    :param table: Table to be renamed.

    :param name: New name for Table.

    :param engine: Engine instance.

    :type table: string or Table instance

    :type name: string

    :type engine: obj

    """

    table = _to_table(table, engine)

    table.rename(name, **kw)

def rename_index(index, name, table=None, engine=None, **kw):

    """Rename an index.

    If Index instance is given,

    table and engine are not used.

    API to :meth:`ChangesetIndex.rename`.

    :param index: Index to be renamed.

    :param name: New name for index.

    :param engine: Engine instance.

    :type index: string or Index instance

    :type name: string

    :type table: string or Table instance

    :type engine: obj

    """

    index = _to_index(index, table, engine)

    index.rename(name, **kw)

def alter_column(*p, **k):

    """Alter a column.

    This is a helper function that creates a :class:`ColumnDelta` and

    runs it.

    :argument column:

      The name of the column to be altered or a

      :class:`ChangesetColumn` column representing it.

    :param table:

      A :class:`~sqlalchemy.schema.Table` or table name to

      for the table where the column will be changed.