On Tue, 9 Nov 2010 11:00:36 +0200 Henrik Ingo <henrik.ingo@avoinelama.fi> wrote: Henrik> On Tue, Nov 9, 2010 at 5:03 AM, Federico Razzoli Henrik> <federico_raz@yahoo.it> wrote: Henrik> > Hello Henrik> > Henrik> > I've read in the documentation that any legal SQL expression Henrik> > SHOULD be allowed in the Virtual Columns definition. Henrik> Henrik> That opening statement (on Henrik> http://kb.askmonty.org/v/virtual-columns) is misleading in many Henrik> ways and I've commented on the article but it is not yet fixed. Henrik> - subqueries or anything that depends on data outside the row Henrik> is not possible Henrik> - only deterministic functions are possible Henrik> - UDF and stored functions are not possible Sorry for not getting the article updated earlier. I've changed the problematic line and added some clarifying bullet points. Let me know if further changes need to be made. http://kb.askmonty.org/v/virtual-columns Thanks. -- Daniel Bartholomew Monty Program - http://askmonty.org