MySQL & Grafana 8: "results value" shown as legend. Bug?

[biobier]

• What Grafana version and what operating system are you using?
• v8.0.2
• What are you trying to achieve?
  After upgrade from v7 within a Graph (Old) panel with two queries (one from MySQL and anohter from InfluxDB) suddenly “results value” is shown in the metric name.
  

Disabling/removing the influxDB query makes "results " disapear but “value” stays. Renaming the column to “” in MySQL query makes “value” disapear. Is that really intended behaviour? It seem it doesn’t according to the MySQL Grafana documentation.

• How are you trying to achieve it?
  The querys using do not have an affect on this. But anyhow here examples:

SELECT
  $__timeGroupAlias(runAt,$__interval),
  env AS metric,
  count(id) AS value
FROM captures
WHERE
  $__timeFilter(runAt)
GROUP BY 1,2
ORDER BY $__timeGroup(runAt,$__interval)

The Influx query
SELECT mean("PercentProcessingUnitUsed") FROM "systemStatus" WHERE ("host" = 'MyServer') AND $timeFilter GROUP BY time($__interval) fill(linear)

• What did you expect to happen?
  Not showing results nor value as metric name.

• Did you receive any errors in the Grafana UI or in related logs?
  Nope

• Did you follow any online instructions? If so, what is the URL?
  mysql documentation

[hoozter9]

Got the exactly same bug & behavior in Version v8.0.6 (68fe9e3431). The Bug appears with the old Panel as well as with the new timeseries one. Same query in Single Source Dashboard (only MySQL query`s no mixed sources) is working perfect.

SQL Query:

SELECT
  TimeStamp AS "time",
  Pac1 AS "Phase 1 PV"
FROM SpotData
WHERE
  $__unixEpochFilter(TimeStamp)
ORDER BY TimeStamp

[iaryabchikov]

I’m experiencing the same Bug with PostgreSQL. Grafana v8.0.6.

[legalist]

After an upgrade to grafana 8.1.5, we are experience the same problem on PostgreSQL graphs. No changes were made to graph and everything was working in grafana version 7.

As a temporary workaround, you can set the “Display Name” attribute (left config panel, under standard options) as ${__field.labels.you_label_name} taken from the docs Standard field options | Grafana Labs