Count Active Agents Between Two Dates

[david148]

Hi there,

I am working on Power BI to create a report on Agent Staffing at my work. The formula I am trying to wrap my head around is to calculate the total number of Active agents on a particular date.

This is very easy to do in Excel as shown in the table below I have 5 agents listed with varied Start and End Dates. (31/12/9999 used to show that there is no end date confirmed)

And on another table I can run a simple COUNTIFS formula to work out how many of these agents were Active on a particular date as shown below.

The trouble I have is in Power BI I need to replicate this, and I need a Date Range that dynamically updates according to the Dates on the RAW data. For this I set myself up a CALENDARAUTO for these dates. But I am having trouble linking these two tables.

Therefore my questions are as follows.

1. What would be the best approach to linking these two tables?
2. Once linked what formula would you suggest using to calculate the total number of agents who are active on a day on the Calendar table.

[tamerj1 · Accepted solution]

Hi @david148 

no need to have the 2nd table

First create a date table

Date =
CALENDAR ( MIN ( Table[Start Date] ), MAX ( Table[End Date] ) )

Active =
VAR SelectedDate =
    MAX ( 'Date'[Date] )
RETURN
    CALCULATE (
        SUMX (
            Table,
            IF (
                Table[Start Date] <= SelectedDate
                    && Table[End Date] >= SelectedDate,
                1,
                0
            )
        ),
        'Date'[Date] <= SelectedDate
    )

then create a measure 

[david148]

Thank you so much. That did it 🙂

[tamerj1]

@david148 
Wht do you think now, which is easier? DAX or EXCEL?