Joe Celko's "SQL For Smarties" and "SQL Puzzles and Answers" are classics in the field. They're still very relevant despite being 10+ years old, since SQL hasn'

Joe Celko's "SQL For Smarties" and "SQL Puzzles and Answers" are classics in the field. They're still very relevant despite being 10+ years old, since SQL hasn't changed anywhere near as much as, say, Java in that time. http://www.celko.com/books.htm http://www.celko.com/books.htm