Sort Operator but No Group By

kamingbb 2016-06-20 02:58:26

I'm sorry to post another question on the same topic. But I just found that there is an exception. There is no "Group By" even operators reference the Sort column. Does anyone know the reason?

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kamingbb 2016-06-20 07:15:28
I finally understand it. It's nothing to do with the "Sort" operator. The "Group By" column checked because of the "Collapse", "Segment" or "Stream Aggregate" operator.