How to setup an alert for "NULL" output

[ksundarappa]

Hi Team,

We have enabled DB query Plugin in Dynatrace. upon running our query in the custom extension, we are getting few outputs with Startime as "23:38:00" and Endtime as "NULL".

Now we have to create alert for the end time where it is showing "NULL" . But in Dynatrace, the alert only works for numeric value.

Can anyone please let us know how to set alert for the value "NULL" in Dynatrace?

[ChadTurner]

if the value is NULL then there isn't a value.... have you tried to alert on the missing data instead? Give that a shot and see if it helps. 

[GosiaMurawska]

Hi @ksundarappa 
Have you managed to solve the problem? It would be great if you shared the solution with the Community users 💡