Only InfluxDB datasource?

[giddel]

I wonder if the math is only available for InfluxDB datasource? Unfortunatly I can't find any further docs or help for using this plugin.
Especailly I'm looking for calculated thresholds and max values for the singlestat gauge by using Prometheus datasources.
May be I'm complete wrong here, if so can anybody point me to the right place?

[m-shaffer]

This is working for me with prometheus. Setting the Legend format for each Query and then applying the math using those Legend format names.

[eertul]

Any comments for Elasticsearch?

[luke-adams-kaluza]

Really like the plugin and have been using it with InfluxDB as the datasource, however, my team are starting to move towards using PostgreSQL as our datasource and it only seems to support queries that are formatted as a time series. It would be really useful if it also worked for when the query was formatted as a table, is this possible and I am missing something? If not, please could I request this.