The upsert form of UPDATE is a Teradata extension to the ANSI SQL:2011 standard.
The following privilege rule applies to both the UPDATE and INSERT portions of this
statement:
You must have both update and insert privileges on the base table, view, or column set to be updated
regardless of which portion of the request is performed.
The following privilege rules applies to the UPDATE portion of this statement:
You must have the UPDATE privilege on the base table, view, or column set to be updated.
To update rows through a view, you must have the UPDATE privilege on the view.
Also, the immediate owner of the view (that is, the database in which the view resides)
must have the UPDATE privilege on the underlying object (view or base table).
The following privilege rules apply to the INSERT portion of this statement:
You must have the INSERT privilege on the referenced table.
To insert rows into a table through a view, you must have the INSERT privilege on
the view.
Also, the immediate owner of the view (that is, the database in which the view resides)
must have the INSERT privilege on the underlying object (view or base table).