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Re: virtual columns
On Tue, Nov 9, 2010 at 5:03 AM, Federico Razzoli <federico_raz@xxxxxxxx> wrote:
> I've read in the documentation that any legal SQL expression SHOULD be allowed
> in the Virtual Columns definition.
That opening statement (on http://kb.askmonty.org/v/virtual-columns)
is misleading in many ways and I've commented on the article but it is
not yet fixed.
- subqueries or anything that depends on data outside the row is not possible
- only deterministic functions are possible
- UDF and stored functions are not possible