Problem 1: Want to test and produce an error somewhere in my workflow has zero rows as a result... It seems to me that nothing native to Alteryx runs if it has no rows (like append in workflow image below). See workflow image below.
In this case I want to add an Error after the T output of the filter if there are no rows which there is in this case.
Problem 2: Same workflow image, but why does the R code run even though there is no input and how do I stop it from running if there are no input rows.
Side note why does running the above simple R code take 3s?
End result: is an error message and stopping the R code from running if it has no input rows.