Calculating a date based on one variable in data

[Creative_tree88]

Hi all - I have some data (see sample).  I need to be able to produce a derived column in the dataset based on whatever the field is in column B (Type).  If it's Activity, then the date needs to show the date in column D (Event Date) and if it's Demand then it needs to show whatever date is in the Request Date column.  

I've shown this in the linked sample data, and the highlighted column in yellow (column E) is what it needs to show.  

Little stuck on this but I'm sure there must be a very simple way to calculate this, either in Power Query or as DAX.

Many thanks all!

Sample Data 

[v-shamiliv]

Hi @Creative_tree88 
I hope this information is helpful. Please let me know if you have any further questions or if you'd like to discuss this further. If this answers your question, please Accept it as a solution and give it a 'Kudos' so others can find it easily.
Thank you.

[v-shamiliv]

Hi @Creative_tree88 
I wanted to check if you had the opportunity to review the information provided by @danextian , @Vijay_Chethan  and @johnt75 . Please feel free to contact us if you have any further questions. If their response has addressed your query, please accept it as a solution and give a 'Kudos' so other members can easily find it.
Thank you.

[v-shamiliv]

Hi @Creative_tree88 

May I ask if you have resolved this issue? If so, please mark the helpful reply and accept it as the solution. This will be helpful for other community members who have similar problems to solve it faster.

Thank you.

[danextian · Accepted solution]

Hi @Creative_tree88 

This should be pretty straighforward either with DAX or Power Query unles you 're looking for something else.

[Vijay_Chethan]

Hello Creative_tree88,
create a calculated column
Derived_date_column=
if([Type]="Activity",[Event Date],[Request Date])


if this hepls , please mark as solution

[johnt75]

Use Power Query. Go to the Add Column tab and choose Conditional Column. There you can plug in the values you need.