Grafana shows 'no data' when check more than one choose in variable

Hello @wolfohyeah,
I’m not sure either. I know that if you wanted to filter for multiple hosts with flux your query would look like this:

from(bucket: “flower”)
|> range(start: -30d)
|> filter(fn: (r) =>
r._measurement == “mem” and
r.host == “host1” or
r.host == “host2” and
r._field == “used_percent”
)