1) The volatility option is not reflecting. It stays volatile always when creating the function.
2) Set "Returns as set" to true and enter estimated rows like 12. Now set returns as set to false and save.
It gives ERROR: ROWS is not applicable when the function does not return a set.
Need to clear estimated rows when returns as set is false.
3) If estimated rows are added and support function is selected then SQL looks ugly.
Fixes#5843