HEllo EG Users, I am looking for ways to check for non-existing columns in my intermediate datasets. For example, I calculate sum of two columns A and B as Total sum(t1.A, t1.B) is computed column Total. However in some scenarios, A might not just exist, and it by that I don't mean that the data is missing and saved as . for column titled A. Are there relevant IF statements in conditional category that can be used to these kind of checks? In theory, following code would have worked if I had both columns A and B and the data was missing (.) case when t1.A = '.' then sum(t1.B) when t1.B = '.' then sum(t1.A) else sum(t1.A, t1.B) end However how I do I go about checking for non-existing columns. Thanks, Dhanashree
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