Thanks for the links. I already tried ROWNUM<10, but without success (maybe a limit clause in C will work, as the first link pointed out). The second one has exactly the same problem - but (s)he didn't mention which version are used.
I just "downgraded" the MySQL ODBC Connector from 5.1.17 to 3.51 - I'll check later today or tomorrow if that will work....
5.1.15 may work - but where do I get that version?
I'll post my findings later on. Your input/effort is very much appreciated guys!
After downgrading to MySQL ODBC Connector 3.51 it works like a charm. So it must be something strange in the 5.17 version...
So if you ever encounter something like this on the forum, you now know the answer!
I'll also create a blogpost about my findings "soon" ;-)