Lambda the Ultimate

I've noticed that several new members chose obscure user names, instead of using their regular names. This is discouraged around here. Please see the LtU policy regarding user names, and at least provide identifying information in your user profile (e.g., a homepage url), if you keep using a handle instead of your real name.

On top of the reasons explained in the policy pages, LtU is being constantly attacked by spammers these days. Spammers ususally use strange usernames, and this allows me to catch them before they beign posting. However, the effectiveness of this technique depends on genuine members using their real names, so please help by abiding to this policy.

Thanks.

Doing strange things with SQL is always fun...

This Sudoku solver makes use of Oracle 10g's MODEL clause, which seems quite hairy.

SQL isn't mentioned around here all that often, so I am glad we can at least remind ourselves from time to time of the most heavily used declarative language out there by posting SQL puzzles and hacks...