Difference Transformation is not working with SiteWise data source

[kzawad1-ces]

What happened:
Using the AWS IoT SiteWise data source can get the data, but the Grafana Transformation to calculate the difference is not working.

What you expected to happen:
The expectation that a difference calculation Transformation should work.

How to reproduce it (as minimally and precisely as possible):

Screenshots

Anything else we need to know?:
No

Environment:

• Grafana version: Grafana Cloud Pro
• Plugin version: 1.23.0 (Installed version)
• OS Grafana is installed on: N/A
• User OS & Browser: Microsoft Edge
• Others:

[iwysiu]

Hi @kzawad1-ces ! The reduce row operations are to combine two fields from a row into one result (docs) Since you've only selected one field, it returns the difference as 0.