In the Step foldin indicators there is an "Unknown" indicator which represents absence of query plan due to an error. How do I find out that error?
The step indicators are calculated by using the query plan. In "M", the query plan can be obtained by calling Value.Expression(Value.Optimize(...)) on the affected step.
For example, a known bug (under investigation) that will produce an "Unknown" step indicator is this:
I can obtain the error message by adding a new step that obtains the query plan for the affected step:
Hi @xander2121 ,
Could you please provide some details like when the error occurs and screenshots to help us clarify your scenario?
Best Regards,Eyelyn Qin
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