Flux Query in Grafana Returning Partial Results compared to InfluxDB Data Explorer

• What Grafana version and what operating system are you using?
  This is Grafana 9.4.3 running on a Linux box

• What are you trying to achieve?
  I am querying my InfluxDB database and trying to show unique assessments (think of it like a tag, with each different assessment/tag having a unique GUID) on a geomap panel. The assessments are being written into InfluxDB every minute, and I want this geomap panel to just show the most recent record of each assessment on the map. I want to be able to select different time ranges, though, so that I can see what assessments were active during that particular time…I just want to limit the data displayed to only the most recent record for each unique assessment ID (there is a field in the data with each assessment’s GUID) so that mousing over each assessment on the map shows that assessment’s information rather than 5 or 10 records (one per minute for the time range selected).

• How are you trying to achieve it?
  I am using the following flux query in Grafana:

from(bucket: "Assessment_Data")
  |> range(start: v.timeRangeStart, stop: v.timeRangeStop)
  |> filter(fn: (r) => r["_measurement"] == "current_assessments")
  |> filter(fn: (r) => r["_field"] == "assessmentlat" or r["_field"] == "assessmentlon" or r["_field"] == "assessmentid" or r["_field"] == "assessmentcreated" or r["_field"] == "assessmentcomments" or r["_field"] == "assessmentcreatedby" or r["_field"] == "assessmentelement" or r["_field"] == "assessmentfeeder" or r["_field"] == "assessmentcategory")
  |> pivot(rowKey: ["_time"], columnKey: ["_field"], valueColumn: "_value" )
  |> drop(columns: ["_start", "_stop"])
  |> group(columns: ["assessmentid"])
  |> last(column: "_time")

• What happened?
  With this query, I get just a single record for the most recent line that has been written.
  

• What did you expect to happen?
  I expected to get the same result that I get with this same query in InfluxDB’s Data Explorer, where I have two tables of results (one table per GUID) and I get the most recent result from each assessment.
  

• Can you copy/paste the configuration(s) that you are having problems with?
  I showed the query that I’m running above. Taking out the group and last functions, I get five of each record as shown here:
  

• Did you receive any errors in the Grafana UI or in related logs? If so, please tell us exactly what they were.
  I didn’t get any errors with this.

Any help on this would be much appreciated.

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