CHANGE COLUMN DATA TYPE?

Hi all, I need to change the data type of a column. (I know the trick of creating a new temp column, copy the data from old, etc...) But I expected newer versions already have a command equivalent to MySql "CHANGE COLUMN" or similar, but I can't found in monetdb documentation. All examples of "ALTER COLUMN" are for setting other attributes. Anybody knows a specific command to do what I need? Kind regards, Alberto