Samuel Harr wrote:
....Though technically that may work but I would never call SQL to do some Business logic there. ....
It may not be the best solution for your particular issue but in general I would never say never. 
Samuel Harr wrote:
... Anyway that is bad that there is no such an Action block to do such a conversions.
Hopefully that will come in future release. ...
You could always share your custom Action with the forum.
Regards,
Christian