title: What are the most common SQL anti-patterns?
body: <p>All of us who work with relational databases have learned (or are learning) that SQL  is different. Eliciting the desired results, and doing so efficiently, involves a tedious process partly characterized by learning unfamiliar paradigms, and finding out that some of our most familiar  programming patterns don't work here. What are the common antipatterns you've seen (or yourself committed)?</p>