About the event where the output result in Variables is duplicated


Currently, the Grafana Variables settings are as follows.

column FROM table;

With the above settings, the output results of Variables are duplicated like a, b, b, c.

Until now, when Variables was set, there was no duplication in the output, and Grafana recognized that duplication was eliminated.

This duplication phenomenon can be solved on the Grafana screen by setting the setting to eliminate duplication using “DISTINCT”, but the root cause is unknown.

Please tell me if there is a similar phenomenon and there is a solution.

I’m sorry if it’s hard to read because it uses machine translation.