Forum Discussion
Logical clause for a join ?
Hello !
I would like to get a list of active years per users, based on the years between their start and end dates.
My Issue is that I do not have the possibility to add Stored Procedures on my provider's database.
So, I am trying in DAX instead
First, here's an idea of how I would have done it in SQL :
Select u.USerID, y.Year
From vwUsers u left join vwYears y
on y.Year between (u.UserDateHired and coalesce(u.UserDateTerminated, Date.Now()))
Through DAX, I created the following :
ctUserActivity =
Var curDay = Today()
Return SELECTCOLUMNS(vwUsers, "UserID", [UserID], "DateStarted", [UserDateAdded], "DateEnded", COALESCE([UserDateInactivated], curDay))
So I have my user info ready to join with my Calendar table... But I don't see how to state a logical clause for the join
Here is a data sample of what I would like to obtain:
| UserID | Activity |
| 101010 | 2010 |
| 101010 | 2011 |
| 101010 | 2012 |
| 101010 | 2013 |
| 101010 | 2014 |
| 101010 | 2015 |
| 101010 | 2016 |
| 202020 | 2019 |
| 202020 | 2020 |
| 202020 | 2021 |
| 202020 | 2022 |
| 202020 | 2023 |
| 303030 | 2021 |
| 303030 | 2022 |
| 303030 | 2023 |
Please help !
Thank you,
Erik
Roughly speaking, use GENERATEALL(vwUsers, FILTER(vwYears, ...)) to realize LEFT JOIN effect.
5 Replies
Roughly speaking, use GENERATEALL(vwUsers, FILTER(vwYears, ...)) to realize LEFT JOIN effect.
Indeed !!!
I played a bit with GenerateAll
Once I understood its power, I managed to do it from my sample's elements
The next step was to apply it to my solution and it works !
I also made a groupby on my calendar table to get only the years to simplify the results into a ctYears table, here is the resulting code
ctUserActivityAndYear = GENERATEALL(ctUserActivity,filter(ctYears,and(ctYears[Year] >= ctUserActivity[DateStarted].[Year], ctYears[Year] <= ctUserActivity[DateEnded].[Year])))Here is the resulting table
CNENFRNL, I thank you very much !
Have an excellent weekend !
Just saw that the result table is not showing properly, here is an image instead:
Hi EFont
I would like to help but I'm a little unclear about your requirements.
Can you show the following?
1) Please provide sample data that covers your issue or question completely.
https://community.powerbi.com/t5/Community-Blog/How-to-provide-sample-data-in-the-Power-BI-Forum/ba-...2) Please show the expected outcome based on the sample data you provided.
https://community.powerbi.com/t5/Desktop/How-to-Get-Your-Question-Answered-Quickly/m-p/14475233) Please explain how you would expect to get from 1) to 2).
I hope this helps.
Thank you for your help, grantsamborn !
I managed to do it with CNENFRNL's answer
Have an excellent weekend !
