What Grafana version and what operating system are you using?
What are you trying to achieve?
I record temp/light/moist from several locations using influxdb and influxv2 language
Each row is tagged with the location
I want to get all the unique values of location tag, and make a dashboard variable for multi-selection
How are you trying to achieve it?
I did create a dasnboard variable query, using this query :
But both in dashboard view, or in dashboard config variable view, only 1 value (ie 1 row) shows up
What did you expect to happen?
I expected both locations to be available as variable multi-choice, but only one does
Can you copy/paste the configuration(s) that you are having problems with?
No sure if this question is relevant in my case
Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.
No error message, quite the opposite, the very same query gives me expected result when using it in explore
group() I guess before that I had a stream of tables. With group() I get a table, and rows are taken as variable entries
keep(columns: ["_time", "location"]) which I understood is setting the values of location as default values. I’m not sure about the analogy here, because I understood that _value should be an int/float/bool but not a string
@ldrascic Am I write to think that tagValues() is a more efficient solution coz it’s a single call ?