If you used SQL derived tables before returning to a pre-12.5.4 version server, and you:
Create views with SQL derived tables using version 12.5.4 roll back to ASE 12.5.0.3, then try to select from the view, you get an error that derived tables are not supported in that version.
Create stored procedures with SQL derived tables in 12.5.4 roll back to ASE 12.5.0.3 or earlier versions and run the stored procedure, you will see an error that the object (SQL derived table) does not exist.
Create views with SQL derived tables in 12.5.4 return to a pre-12.5.0.3 version, you get stack trace errors.
