topic Re: How To retrieve MAX / MIN using a measure on aggregated level(s) in DAX Commands and Tips

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

thomasreick — Wed, 24 Apr 2024 08:04:24 GMT

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

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

OwenAuger — Wed, 24 Apr 2024 10:56:12 GMT

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

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

thomasreick — Thu, 25 Apr 2024 12:36:32 GMT

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