I guess the term "Copyrights mean nothing" can be taken a number of different ways. It looks like creating the code is enough to make it copyrighted. On that note, it looks like in the US, registration is required if legal action needs to be taken. See details far below.
I'm not exactly sure what we're discussing at this point? Clearly Sybase\SAP don't have any rights to the CodeXchange code because I highly doubt they did a copyright registration for each code sample uploaded. Also, they wouldn't be qualified to fill such an application because they didn't create the work nor did they have it created as work-for-hire.
So... I think we can agree that copyright goes to the author of the code and there's probably nothing SAP can say about that.
What are we discussing, again?
From the Canadian Intellectual Property Office (if we're talking Canada):
A Guide to Copyright - Canadian Intellectual Property Office
Registration is not required for protection in Canada. However, a certificate of registration of copyright is evidence that copyright exists and that the person registered is the owner of the copyright. Copyright exists automatically when an original work or other subject-matter is created, provided the conditions set out in the Copyright Act have been met.
The US is a bit different but along the same lines (too lazy to get it from a .gov site so hopefully wikipedia will do):
https://en.wikipedia.org/wiki/Copyright_law_of_the_United_States#Registration_procedure
Copyright is automatically granted to the author of an original work (that otherwise meets the basic copyright requirements, discussed above). Registration is not necessary. However, registration amplifies a copyright holder's rights in a number of ways. Registration is required before a lawsuit can be filed, and registration creates the possibility for enhanced "statutory" damages.