Can someone please explain the ATTR Function in Tableau

问题

I know that the ATTR function is used for aggregation, but can someone explain it in simple terms?

回答1:

In the most simplest of terms, ATTR returns a value if it is unique, otherwise it returns "*". I think you'll find this link helpful with examples.

https://www.interworks.com/blog/tcostello/2014/05/15/attr-tableaus-attribute-function-explained

回答2:

You cannot mix aggregate and non aggregate comparisons in tableau, you have to use ATTR, for e.g. if ATTR(segment) ='Corporate' then sum(sales)

来源：https://stackoverflow.com/questions/34416290/can-someone-please-explain-the-attr-function-in-tableau