HR Data - Slowly Changing Dimensions

[bwaetford]

I am working on an HR report and have a type 2/slowly changing table called employee_data (the table has a "from date" and "to date").  data changes per employee infrequently, but when data changes the employee gets a new row where from date = the date the transaction is entered, and to date = a date in the very distant future. The employees previous row is updated with the 'to date' being the day prior to the new row. I also have a date table with one row per day. 

I'd like to create a report that shows the count of employees per month, but dont seem to be able to find a way to create a join from the date dimension to the employee dimension using "between".

Any suggestions on how to best achieve a join from a slowly changing dimension to a date dimension such that if the month grain is chosen in a report, that the employee is counted every month for which they have a valid record (based on the from and to dates)?

[v-yuezhe-msft · Accepted solution]

@bwaetford,

Please check if the DAX in attached PBIX file returns your expected result. If not, please share sample data of your table and post expected result here.



Regards,
Lydia

[Anonymous]

Hi @v-yuezhe-msft thank you for this post. 

I tried out this solution and found it works well.

How would you include time in this? as either time by its self or with date...

[bwaetford]

Great help. Thanks!

[v-yuezhe-msft]

@bwaetford,

If my method solves your issue, please accept my reply as solution to close this thread.

Regards,
Lydia