plugin=diff is not implemented.
http://yellow.ribbon.to/~tuotehhou/index.php?%2BSQLServer%2B%E4%BB%8A%E6%8C%BF%E5%85%A5%E3%81%97%E3%81%9F%E3%83%87%E3%83%BC%E3%82%BF%E3%81%AE%E8%A1%8C%E3%82%A4%E3%83%B3%E3%83%87%E3%83%83%E3%82%AF%E3%82%B9%E3%82%92%E5%8F%96%E5%BE%97%E3%81%99%E3%82%8B
plugin=diff is not implemented.