What if null if null is null null null is null?
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In this fourth and final part in my series about NULL, I’ll discuss some well-known and some less well-known functions and keywords that are specifically created to deal with NULL values. And I will, of course, explain why null if null is null null null is null. In case you have not yet read them, you can click these links to read the first, second, and third part. IS NULL is not = NULL I have already explained why tests for equality with NULL will always return Unknown instead of True or False. This holds true in all…
