Two Date Tables - One Related & One Disconnected - On Same Axis?

[Anonymous]

I am attempting to analyze to aspects of service tickets on a monthly trend: number of new tickets opened and number of tickets open at any time in that month. I'd like this represented on a combo chart (line/bar graph).

I have a fact table Tickets that contains a DateOpen and DateClosed field for each ticket. I have a date table connected to the DateOpen field to count the new tickets opened

NewTickets = COUNTROWS( Tickets[DateOpen])

To get the volume of tickets for a given month I use another date table that is not connected to the Tickets table and utilize the LASTDATE and FIRSTDATE functions to count whether the DateOpen and DateClosed values fall within a given month

CALCULATE(
        COUNTROWS( Tickets),
        FILTER(
            Tickets,
            Tickets[DateOpen] <= LASTDATE(tCalendarDisconnect[Date]) && 
            Tickets[DateClosed] >= FIRSTDATE(tCalendarDisconnect[Date]
        )
    )

As separate visuals this achieves what I want.

But what I want is to see this information on the same axis. Does anyone know of any methods that would allow me to do this (example, can I use the same date table for both of these formulas some how?) Any help is appreciated.

[AlB · Accepted solution]

Hi @Anonymous 

Let's work with your second chart. Change your first measure's code to:

NewTickets = 
CALCULATE(
        COUNTROWS( Tickets),
        FILTER(
            Tickets,
            Tickets[DateOpen] <= LASTDATE(tCalendarDisconnect[Date]) && 
            Tickets[DateOpen] >= FIRSTDATE(tCalendarDisconnect[Date])
    ) 

[Anonymous]

@AlB  Thank you so much, that is exactly what I needed!