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dannyrobinson Frequent Visitor
Frequent Visitor

Stream Analytics DataSet - Data lost when query updated

We just updated our stream analytics query to add new columns (no other changes).  However, all our old data is no longer accessible?  Has anyone else experienced this.  I would expect to keep the old data, and see new columns populated for new data.

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ttrail Frequent Visitor
Frequent Visitor

Re: Stream Analytics DataSet - Data lost when query updated

Don't know if you ever got an answer to your post.  I had the same experience and found Power BI Service does not like the schema of the dataset to change.  I would get errors related to unable to visualize fields.  The only way I got around this was to stop the stream, rename the output dataset, remove the existing dataset in Power BI, then turn back on the stream -- which, as you mentioned, renders the old data inaccessible since you're now using a new streaming dataset.

 

If you found a way around this, please post it here.

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