It's easier than ever to learn SQL.
More precisely, it's easier than ever to start to learn SQL. SQL is in its sixth or seventh revision as an official standard, and understanding why there are two different counts, let alone comprehending all the variations of the query language through the years, is a task few undertake. The latest of these standards is almost 4,000 pages long.
There are plenty of rewards to nibbling at SQL without having to swallow all of it, though. As we explained last month, important information is in the databases in the world, and SQL is the primary way to get at that information. If you're not already comfortable with SQL, it's time to become so.
The article continues at http://www.linux.com/news/software/developer/20546-learn-sql