Table : Display only last data input

I’m Using GRAFANA 6.5.2
Datasource is an InfluxDB 1.7.9
Host is an Ubuntu server 18.04.3 LTS

I’d like to find a way to display only last input of an serie.

What I have :
Data series :
- OS_Type
Time
Count [float]
OS_Type [Sting]
- OS_Type_LastInputCount
Time
Count [float]

I’d like to display the OS_Type[Count], OS_Type[OS_Type] of the last OS_Type_LastInputCount[Count]

Is their a way to do ?

Thanks for helping

I use something like following, Am I right ?

SELECT LAST(OS_Type),Count FROM OS_Type GROUP BY OS_Type

Found a workaround :
I create an dashboard variable like $Count base on an query
After, I use it on my dashboard for an panel query, like Last $Count