Parametertypecallback function
Function to define the output data type(s), length/precision, and scale of the parameters sent to the main function.
	Function to define the output data type(s), length/precision, and scale of the parameters sent to the main function.
Example
FunctionNameParameterTypes <- function() {
  parameters <- list(datatype = c("int", "varchar"),
                     length   = c("NA", "100"),
                     scale    = c("NA", "NA"),
                     name     = c("k", "algorithm"))
  return(parameters)
}
Arguments
| datatype | The data type of the parameter. | 
| length | (Optional) The dimension of the parameter. | 
| scale | The proportional dimensions of the parameter. | 
| name | The name of the parameter. | 
Description
When creating the parametertypecallback function, you define one row for each parameter being sent to the function. You must specify a parametertypecallback function if your UDx uses parameters.
The parametertypecallback does not accept any input arguments.