power BI dax function - powerbi

How to create a table using group by function (DAX) to identify the segment-wise average sales in power BI.
result should look like this

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Not able to calculate the difference between dates (DAY) in Power BI Direct Query

I am unable to calculate difference between the dates in two columns using DATEDIFF function of PowerBI. I have a restriction to pull the data only in DirectQuery Mode.
Below attached is the screenshot for the error that I am getting

Export Multiple Power Bi visual (Matrix and Table) to Excel

I am trying to export multiple pages in one report to excel (same spreadsheet) with the filters.
Is there any way I can do it?
You can't export Power BI visuals to Excel for whatever reason. However, you can use Analyze in Excel to live connect to the Power BI dataset and then rebuild Power BI tables and matrices with Pivot tables. Note that this doesn't work with Power BI's implicit measures but explicit (DAX) measures only.

Group by column then Sum group table in Power BI

I have a report on Business Objects which i would like to replicate on Power BI. On BO, it groups a column and gives the sum of the total in the table per group. I have provided an example to give clarity on the query. I think in the example provided, it is grouped by column Delivery Litres. I would like to produce the same output in Power BI
TIA

How I create calendar inside Power BI?

How I create Custom CalendarLike this picture inside power Bi and get output based on date selection?

Calculated Column Next Date Power BI

I'm trying to figure out how I can get the next day in Power BI.