How big (# of fields and # of rows) are you working with? I'm searching for a limitation but I do not see one defined. What is the experience on Tableau Desktop for the same Union join ?
Hey Patrick, I know that the extract that we were trying to create was waaay to big - on the order of 2.5 Gb of data across all the files so it was just too much (and the behavior was the same on desktop). Like you, I couldn't find anything when I searched and was just seeing if there were any recommended guidelines as to what was too much.