Grafana with InfluxDB: Ad hoc filter is always empty

Question

Data source query language: Flux

Grafana Version 7.4.3

InfluxDB 2.0.4

Can anyone explain how does Ad hoc filter work? How is drop down list generated? In my case it always says No options found:

Variable settings:

Do I have to write appropriate queries in panels to make it work?

Answer 1

I guess you have missed info This datasource does not support adhoc filter yet when you was creating variable:

So adhoc filter doesn't work for InfluxDB in your current Grafana version. BTW: it was supported in previous version (at least 6.7.X).