topic Re: Dax Statement for If Column Value = X, Return value that is column A * -1 in DAX Commands and Tips

Dax Statement for If Column Value = X, Return value that is column A * -1

smac812 — Thu, 26 Jan 2023 22:42:21 GMT

I am very new to DAX and Power BI. I want to create a new column that is a measure that would return the value of lets say column A if Column B is blank. If that Column B contains an X, then I would want it to return a value that would equal column A * -1. How would I write this in DAX. I tried to do a custom column with the if then but I wasn't getting anywhere. I am sure it needs to be a measure because I either want it to return the value of Column A, or I want it to return the value times -1 but it is all dependant on the value of a subsequent column.

Thanks!

Re: Dax Statement for If Column Value = X, Return value that is column A * -1

Greg_Deckler — Thu, 26 Jan 2023 23:36:41 GMT

smac812 As a calculated column that should be something like:

Column = IF([B] = BLANK(), [A], [A] * -1)

Sorry, having trouble following, can you post sample data as text and expected output?
Not really enough information to go on, please first check if your issue is a common issue listed here: https://community.powerbi.com/t5/Community-Blog/Before-You-Post-Read-This/ba-p/1116882

Also, please see this post regarding How to Get Your Question Answered Quickly: https://community.powerbi.com/t5/Community-Blog/How-to-Get-Your-Question-Answered-Quickly/ba-p/38490

The most important parts are:
1. Sample data as text, use the table tool in the editing bar
2. Expected output from sample data
3. Explanation in words of how to get from 1. to 2.

Re: Dax Statement for If Column Value = X, Return value that is column A * -1

FreemanZ — Thu, 26 Jan 2023 23:57:18 GMT

hi smac812

try to add a calculated column like:

ColC = IF( [ColB] = BLANK(), [ColA], IF( CONTAINSSTRING([ColB], "X"), [ColA]*-1 ))

verifid and worked like:

Re: Dax Statement for If Column Value = X, Return value that is column A * -1

AlexisOlson — Fri, 27 Jan 2023 03:46:41 GMT

Just chiming in to be careful with [ColB] = BLANK() syntax since it returns true when [ColB] is zero. I'd recommend using ISBLANK([ColB]) instead.

See here for more detail:

https://www.sqlbi.com/articles/blank-handling-in-dax/