RANKX 达克斯 function

Question

Can someone explain to me what is wrong with the below DAX formula?. This returns the answer '1' for all the rows.

=RANKX(ALLSELECTED(Sheet1),SUM(Sheet1[Sales]),,ASC)

Answer 1

Change this a little bit:

SumOfSale = calculate(SUM(Sheet1[Sales]))

RankMeasure=
RANKX(ALLSELECTED(Sheet1),[SumOfSale],,ASC)

Read this article: https://www.sqlbi.com/articles/use-of-rankx-in-power-bi-measures/