Re: Ackermann function (was factorial)

Hi,

It's been a while since I knew the vocabulary. But I think for pure SQL that is correct. Now in SQL/PSM you can always do it with recursive calls (and every recursion can be turned iterative I dimly remember).
DB2 UWO's SQL UDFs don't support recursive calls today. But that's our bad, not SQL/PSM's ;-)

You could use a "dynamic compound statement" and use a table as stack. You've got 64K to code it :-)

Cheers
Serge

--
Serge Rielau
DB2 UDB SQL Compiler Development
IBM Software Lab, Canada