> I have noticed that many authors of SQL articles don't seem to be aware of Oracles quirks I've spent much more time with Oracle than with other RDBMS. So, wh

> I have noticed that many authors of SQL articles don't seem to be aware of Oracles quirks I've spent much more time with Oracle than with other RDBMS. So, what made you think so? > The author didn't specify any particular database, but wrote as if what he was saying applied to all relational databases Yes, in this article's case, the article and conclusion applies to all relational databases. > But Oracle treats empty strings and NULLs as the same thing, which I don't think the article's author was aware of. I am aware of this, but how is it related to the article?