3 descriptor statements have the following shortcomings
5 - input descriptors (USING DESCRIPTOR <name>) are not supported
7 Reason: to fully support dynamic SQL the frontend/backend communication
8 should change to recognize input parameters.
9 Since this is not likely to happen in the near future and you
10 can cover the same functionality with the existing infrastructure
11 (using s[n]printf), I'll leave the work to someone else.