If statement to not change value if FALSE

[Anonymous]

Hello,

I am creating a column to update/relace values if the condition is TRUE. If the condition is FALSE, I dont want to change the existing value. 

For example:

Innitially:
TestVAL = 1

GOAL:
TestVAL = IF(WEEKDAY(TODAY()) = "Monday", TestVal+1(Which Returns 2), (ELSE, Keep the whatever the old value was, in this case 1)

So essentially, this changes the value of TestVAL by 1 on each monday. If its not monday, the value should remain as it is. 

Any help is appriciated. 

Thank you in advanced.

Best Regards,

Maitri

[Vijay_A_Verma]

Use the below DAX formula

= IF(WEEKDAY(TODAY())=2, TestVAL+1, TestVAL)

In PQ, you can use following

= if Date.DayOfWeek(DateTime.FixedLocalNow())=1 then TestVAL+1 else TestVAL

[Anonymous]

The entire formula whould be:

TestVAL = IF(WEEKDAY(TODAY())=2, TestVAL+1, TestVAL)

And Dax is not allowing me to make a circular reference. The Last parameter(TestVAL) is greyed out and is not recognized. 

Is it possible to make TestVal a function column and write a function for this? If so, can you help with the function?

Thaknks for your reply. 

[v-jingzhang · Accepted solution]

Hi @Anonymous 

The code you are using is in DAX while DAX doesn't allow you to replace some part in an existing column. You can use this code to create a new column and give the new column a different name from TestVAL. For example,

If you want to transform an existing column without adding a new column, you need to do this with Power Query instead of DAX. Let us know what your expected result should be like based on some sample data, then we can suggest more accordingly. 

Best Regards,
Community Support Team _ Jing
If this post helps, please Accept it as Solution to help other members find it.