sql 游标

http://www.2cto.com/database/201208/146866.html

http://www.cnblogs.com/sc-xx/archive/2011/12/03/2275084.html

http://blog.csdn.net/yulei_qq/article/details/9372415

http://www.cnblogs.com/freeliver54/p/3152549.html 存储过程