There is a story within the story here: this article was not "fact-checked" by any person who has ever actually used SQL while developing software. To quote: '

There is a story within the story here: this article was not "fact-checked" by any person who has ever actually used SQL while developing software. To quote: 'This is because the word “null” is often inserted into database fields to indicate that there is no data there.' The story is that companies can't be bothered to hire programmers who are clever enough to know that null and "null" are not the same thing. The story within the story is that news websites can't be bothered to get their technical stories proof-read by people who actually know the technicalities.