Power Pivot Principles: The A to Z of DAX Functions – ALL
3 August 2021
In our long-established Power Pivot Principles articles, we are starting a new series on the A to Z of Data Analysis eXpression (DAX) functions. This week this function is ALL we can talk about!
The ALL function
In Power Pivot, the ALL function returns all of the records in a table, or all of the values in a column, ignoring any filters that might have been applied for the file under scrutiny. This function is useful for clearing filters and creating calculations on all rows in a given table.
It is often used in conjunction with the CALCULATE function. For example, here, I am going to create a simple ‘All Months Sales’ measure:
Our resulting PivotTable will look something like this:
What next? It sort of stands out, doesn’t it? From the CALCULATE and ALL functions, I can now combine them to create a percentage sales measure which will reflect the inherent seasonality (well, for the last six  months anyway):
Remember to include an error trap.
Our PivotTable should look something like this now:
Not only is this percentage calculated from 2014’s total sales, this measure will always be a percentage. This is subtly different from a normal PivotTable, where percentages may be viewed by changing the Value Field Settings rather than an absolute (dollar) amount. Since this measure is based on a month’s sales divided by all months’ sales, this figure will remain a value between zero  and one  no matter how it is formatted or displayed.
Come back next week for our next post on Power Pivot in the Blog section. In the meantime, please remember we have training in Power Pivot which you can find out more about here. If you wish to catch up on past articles in the meantime, you can find all of our Past Power Pivot blogs here.