Sometimes, you may end up writing a DAX expression that does not work as expected. It may return an error that needs to be handled, or it may not return the desired output.
Many other programming languages come with built-in tools that allow you to debug code line by line. However, there are no built-in tools available with DAX. It simply consists of functions that parameters can be passed to.
For simple DAX expressions, debugging should be fairly straightforward. However, for code where you have multiple layers of nested expressions, it may become necessary to break the expression down into smaller, more manageable parts. By reducing the code into smaller segments, you will be able to inspect different values and confirm which ones are returning the expected results and which ones are not. This is where using variables becomes invaluable when...
