Caling "Edit" for a table containing a column with the new 12c column default "NOT NULL DEFAULT seq.NEXTVAL"
causes error messagebox
Expression cannot use columns or user functions. Literal strings should be quoted : "UWE"."TAB_SEQ"."NEXTVAL"
It is not possible to change anything on this table in the "Edit" dialog".
Each click returns the above error message.
The new 12c Identity columns could be edited.
In "Edit Table" dialog the Tab "identify column" does not create any ddl for filling the identity column.Here also only the idenity cloulmn using a trigger is supported, but not the new 12c column default.