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What Grafana version and what operating system are you using?
10.4.19 / Linux -
What are you trying to achieve?
Grafana should combine different values with different time stamps correctly -
How are you trying to achieve it?
I have several mysql selects (each select for one parameter) of time series in one diagram. The parameters are different temperatures and states of some components of a heating system. -
What happened?
Pointing with the mouse in the diagram at the actual time, all values of each parameter are selected correctly. This means: no value younger as the current time is selected. This means, for some parameters, pretty “old“ values are selected - which is correct. -
What did you expect to happen?
If you don’t go with the mouse to the actual time, but some time backwards, values from some parameters are selected wrongly. Means: instead of selecting the older (compared to the selected time) value of the parameter, a newer value (from the future) is selected. But that’s wrong. It should combine only older values and not newer ones. -
Can you copy/paste the configuration(s) that you are having problems with?
That’s the problem - I don’t know how to achieve the desired behavior
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Maybe two screen shots help to better describe the behavior:
That’s the desired behavior - you can see that some values are selected which are older than the actual time (because those parameters don’t have actual values at the moment).
That’s the undesired behavior and I don’t know how to achieve here the same behavior as above:
The values in the red box should have been taken from the timestamp before ~ 12:50 and not after because they are not yet valid for this moment!
Thanks for any hint!