How To retrieve MAX / MIN using a measure on aggregated level(s)

[thomasreick]

Hello there

I am actually working with Callcenter-Data.

I need help to create measures returning

... the name of the CC-Agent with the Max Number of Calls per week

... the name of the CC-Agent with the Min Number of Calls per week

Each should be displayed on a Card Visual

One problem is that I do not find a way to calculate the max with a direct use of a metric figure (I countrows(facts) which represents the incoming phone number), but MAX() requires a table, not an aggregate.

My Measure does not work

MaxCallPerAgent =

VAR vTbl = ADDCOLUMNS( dimAgents, "@Calls", [#Calls]  )

VAR vMax_v1 = MAX( dimAgents[@Calls] ) -- does not work, no field [@Calls in table]

VAR vMax_v2 = MAX( vTbl[@Calls] ) -- does not work, vTbl not allowed

VAR Max_Topn = TOPN(1, vTbl, [@Calls], DESC ) -- gives no scalar value

RETURN

   ???

I have tried some approaches but unfortunately I do not succeed

callcenter.pbix

The link leads to a pbix on my OneDrive with a reduced datamodel.

Your help is appreciated.

Thx & brgds

Thomas

[thomasreick]

Hello Owen, thank you very much for both..., the source to learn from and the pbix to work with.

Works fine and the topic is solved.

Thomas

[OwenAuger · Accepted solution]

Hi @thomasreick 

Here are some variations on how you can create such a measure (modified PBIX attached).

Showing examples for Agent with Max # Calls:

Agent with Max Calls FIRSTNONBLANK TOPN = 
-- FIRSTNONBLANK breaks ties by choosing first Agent lexicographically in the case of ties
FIRSTNONBLANK (
    TOPN ( 1, VALUES ( dimAgents[AgentName] ), [#Calls] ),
    0
)

Agent with Max Calls CONCATENATEX TOPN = 
-- CONCATENATEX concatenates multiple AgentNames in the case of ties
CONCATENATEX (
    TOPN ( 1, VALUES ( dimAgents[AgentName] ), [#Calls] ),
    dimAgents[AgentName],
    ", ",
    dimAgents[AgentName]
)

Agent with Max Calls FIRSTNONBLANK INDEX = 
-- FIRSTNONBLANK breaks ties by choosing first Agent lexicographically in the case of ties
FIRSTNONBLANK (
    INDEX (
        1,
        VALUES ( dimAgents[AgentName] ),
        ORDERBY ( [#Calls], DESC )
    ),
    0
)

Here is an example of the values returned in your sample PBIX when filtered on ISO Week 202402 where there is a tie for agent with Min calls:

This is a good article on this topic:

https://www.sqlbi.com/articles/alternative-use-of-firstnonblank-and-lastnonblank/

Regards