The expression you typed is not valid for the reason indicated in the message. Make sure you have typed field names and punctuation correctly, and then try the operation again.

One of the most common errors you’ll see when working with Power Query in Power BI or Excel is this: Expression.Error: The key didn’t match any rows in the table It can occur with almos… ...

If you’re writing your own M code in Power Query in Power BI or Excel you may run into the following error: Expression.Error: Evaluation resulted in a stack overflow and cannot continue.

In Microsoft Excel, you don’t need an expression to calculate someone’s age – use Power Query to simplify the process.

Microsoft Excel is the most commonly used commercial spreadsheet software for analyzing data, reporting, and charting.