On Thu, Jun 24, 2010 at 1:44 AM, Alan McDonald <alan@...> wrote:

>> Well, let us assume a table T had an int field N, the table has 4 rows:
>> {10,12,14,16}
>>
>> I need to do this:
>>
>> SELECT std_udf(N) FROM T;
>>
>> And it will return one value:
>>
>> 2.236
>>
>> Thus I need to 'create a custom aggregate function' or simple a
>> "Aggregate UDF"
>>
> not in one call. You need to process the calculation in a stored procedure
> at this time, using the available UDFs and built-in functions

Alan,

So how does it work with Firebird, is there some feature list out
there which I could add this feature to?

Cartoper