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How to combine aggregated measurements in influx and Grafana?
Edit: FWIW I’m running Influx 1.1.1 and Grafana 4.1.1 To combine aggregated measurements under different tags is a bit tricky. I managed to find this post which has the answer. The key is to use sub-queries (InfluxDB 1.2+) to capture each tag’s measurements separately. Then, since the field names are the same, they need to be renamed.
How to get two series of data from InfluxDB?
Then the query for the merged values is just SELECT MEAN (value) FROM notifications and the per-series query is then SELECT MEAN (value) FROM notifications GROUP BY foo These features are not really documented yet, but you can have a look at supported mathematical operators.
How to calculate percentages in a query in InfluxDB?
For example, to subtract field2 from field1, change + to -. Use the data variable created above, and then use the map () function to divide one field by another, multiply by 100, and add a new percent field to store the percentage values in. Note: In this example, field1 and field2 are float values, hence multiplied by 100.0.
How to calculate percentages in a flux query?
Note: Flux supports basic math operators such as +, -, /, *, and (). For example, to subtract field2 from field1, change + to -. Use the data variable created above, and then use the map () function to divide one field by another, multiply by 100, and add a new percent field to store the percentage values in.
How to change field order in Grafana panel?
If your panel has multiple queries, then you must either apply an Outer join transformation or remove the extra queries. Grafana displays a list of fields returned by the query. You can: Change field order by hovering your cursor over a field. The cursor turns into a hand and then you can drag the field to its new place.
When to use transformation in Grafana 7.1 +?
Note: This transformation is available in Grafana 7.1+. Use this transformation to combine the result from multiple queries into one single result. This is helpful when using the table panel visualization. Values that can be merged are combined into the same row. Values are mergeable if the shared fields contain the same data.
How to remove part of a query in Grafana?
Use this transformation to remove portions of the query results. Grafana displays the Identifier field, followed by the fields returned by your query. You can apply filters in one of two ways: Enter a regex expression. Click a field to toggle filtering on that field.
How to merge multiple queries in InfluxDB?
Given that your rows you want to merge have the exact same time returned from influxdb – you can check this using the query inspector.
Is it possible to combine multiple select from different?
I don’t want to paste here my trials, because grafana does not understand clause UNION ALL. So maybe it is possible but in influx not directly from visualization (graph) query definition.