Power BI DAX - count occurence of ID

[Anonymous]

Hello,
I have a set of data with employee, ID and training details. I need to tag those employees who have completed the set of training under one Sales Strategy based on number of training's they did also taking into account the year they completed the training.

ID	Name	Training	Effective Date	Expected results
2580	Emplyee X	Sales Strategy – Execution	30-06-2020 00:00	4
2580	Emplyee X	Sales strategy – Practical	30-06-2020 00:00	4
2580	Emplyee X	Sales strategy – Explain	30-06-2020 00:00	4
2580	Emplyee X	Sales strategy – Welcome	30-06-2020 00:00	4
2580	Emplyee X	Sales strategy – Discern	31-05-2020 00:00	1
1388	Emplyee Z	Sales strategy – Practical	31-05-2019 00:00	1
1388	Emplyee Z	Sales strategy – Explain	30-04-2020 00:00	2
1388	Emplyee Z	Sales strategy – Welcome	30-03-2020 00:00	2

So, to complete the Sales strategy course, the employee must complete 5 trainings:
Sales Strategy – Execution,Sales strategy – Practical,Sales strategy – Explain,Sales strategy – Welcome,Sales strategy – Discern.
Also, the year of completion matters. for example, X completed first 4 trainings in 2020 so the expected result in the column should be 4. In 2019,X completed 1 training under sales strategy category so expected result in the column should be 1.
Please help with the DAX as I am new to Power BI.

[lbendlin · Accepted solution]

There are many ways of doing that, here's one example.

result = 
var e=SELECTEDVALUE(Table3[ID])
var y=year(SELECTEDVALUE(Table3[Effective Date]))
return CALCULATE(DISTINCTCOUNT(Table3[Training]),ALLSELECTED(Table3),Table3[ID]=e,YEAR(Table3[Effective Date])=y)

Note that your sample data does not match your expected results - Emplyee X  has completed 5 courses in 2020. 

[Anonymous]

Thank you! This worked.