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Thursday, February 13, 2020

Power Query - Create a Table that References Itself After an Update

There may be a time when you want to make an addition (like add a column) to your output table from Power Query and have that update show up in the right place. It becomes a query that takes its output as its new input, appends the new data and overwrites the old result with the new one. This can be called (or at least the concepts are similar to) a self referencing query, circular reference, recursive table, self join or self referencing table. Though it sounds complicated, the steps to do this are quite simple.

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