Returns the rank of an expression evaluated in the current context in the list of values for the expression evaluated for each row in the specified table.
A table expression.
An expression that will be evaluated for row of the table.
An expression that will be evaluated in the current context. If omitted, the Expression argument will be used.
The order to be applied. 0/FALSE/DESC – descending; 1/TRUE/ASC – ascending.
Function behavior in the event of ties. Skip – ranks that correspond to elements in ties will be skipped; Dense – all elements in a tie are counted as one.
The rank number of Value among all possible values of Expression evaluated for all rows of Table numbers.
The default value for the Order argument is DESC.
The default value for the Ties argument is SKIP.
Learn more about RANKX in the following articles:
Use of RANKX in Power BI measures
The RANKX function in Power BI might have an unexpected behavior when applied to a column that has a specific sort order in the data model. This article explains why, and how to address this issue. » Read more
Handling customers with the same name in Power BI
This article explains how to show different customers with the same name in a Power BI report by using zero-width spaces, thus simplifying the presentation without adding visible characters to make the names unique. » Read more
Other related functions are:
Contributors: Alberto Ferrari, Marco Russo, Kenneth Barber
MSDN documentation: https://docs.microsoft.com/en-us/dax/rankx-function-dax