> -----Original Message----- > From: Jörgen Winqvist [mailto:jorgen@;winqvist.net] > > I need to let the values in two columns change place with each other. > I've tried to "update xxx set a=b, b=a" but that doesn't work > (b=a uses > the "new" a).
Here's a cute trick for swapping two numbers without using a temporary variable: set a=a-b, b=b+a, a=b-a I don't know how applicable it is to your query, but it might be worth considering. --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
