Did you ever have to combine a few tables, but you were not sure if you should do that in SQL Server with UNION ALL, in Power Query with APPEND or in DAX with UNION?
In general, where are the differences? And how do the three approaches behave in case of duplicate rows, unequal number of columns, deviating column names and order?
In this article we will analyze in detail the different approaches.
The post is relatively detailed, for all of those who consider it too long (tl;dr) here is the comparison table:

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