I have been working with a lot of SQL lately. I wouldn't label myself an expert, but I have been finding my way around a lot easier the more I work with it. I have been working a lot with normalizing data and writing queries that reference multiple tables. When referencing multiple tables, it is common to write a join. Here is a very small overview that explains the difference … [Read more...] about What is the difference between LEFT, RIGHT, INNER and OUTER JOIN?