I'm the Director of Training at Percona, a services company specializing in the MySQL database.
I've written a book, SQL Antipatterns: Avoiding the Pitfalls of Database Programming from Pragmatic Bookshelf, based on the most common SQL problems I've answered on Stack Overflow and other forums, mailing lists, and newsgroups over the past 15 years.
Q&A for professional and enthusiast programmers
Q&A for professional programmers interested in conceptual questions about software development
Q&A for database professionals who wish to improve their database skills and learn from others in the community
Q&A for meta-discussion of the Stack Exchange family of Q&A websites
Q&A for contractors and serious DIYers
Q&A for professional system and network administrators
Q&A for computer enthusiasts and power users
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for power users of Apple hardware and software
Q&A for peer programmer code reviews