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IsNumeric in Power Query

Matthew Roche (with an assist from Imke Feldmann) shows how you can check if a value—or part of a value—is numeric in Power Query:

Using Imke’s approach, this is what I ended up doing:

1. Extract the last two characters from the source column
2. When the extracted characters contain a number, convert them to numeric
3. Standardize the resulting value to represent the correct year

Read on to see how Matthew pulled it off.