TheFuzzy writes: "PostgreSQL version 8.4 is now out and available for download. The main cool features in this version are: recursive queries (for doing trees etc.), windowing functions (for doing reports, more here), column-level permissions, parallel database restore (more here), a beta in-place upgrade tool, and a host of administrative improvements. And, of course, better performance, mainly on reporting queries. Some of the over 200 new or enhanced features are listed here."