This command is not supported for views (Error 1777)
Views cannot be changed with this command. This error has the following causes and solutions:
Using one of the following commands to change view structure: ALTER TABLE, CREATE TRIGGER, DELETE TRIGGER, and MODIFY STRUCTURE.
Use a command that operates on views, or use a table instead.
Modifying the structure of a view cursor with the Table Designer.
Use the View Designer to permanently modify the structure of cursors produced with a view definition.