plugin=diff is not implemented.
http://yellow.ribbon.to/~tuotehhou/index.php?SQLServer%20%E3%83%88%E3%83%A9%E3%83%96%E3%83%AB%E3%82%B7%E3%83%A5%E3%83%BC%E3%83%86%E3%82%A3%E3%83%B3%E3%82%B0
plugin=diff is not implemented.