Welcome to sql-notes-and-practice — a complete, beginner-to-advanced SQL learning roadmap broken down into 35 days of structured, practical, and real-world practice. Whether you're preparing for SQL ...

Return Value Must return a single value using the RETURN statement. May or may not return values. Typically used for actions that don't require a return. Invocation Can be invoked from a PL/SQL block, ...

Ok, by now my first upgrade experience with Katmai is well-documented. So I thought I’d pass along some of my other experiences and some of the things I’ve learned. My Vista upgrade: I have a copy of ...

The term “NoSQL” is widely acknowledged as an unfortunate and inaccurate tag for the non-relational databases that have emerged in the past five years. The databases that are associated with the NoSQL ...

It's been amusing to watch the NoSQL movement transition from a “We don’t need no stinking SQL” attitude to a “Can I please have some SQL with that?” philosophy. The nonrelational databases that ...