http://blog.csdn.net/liangweiwei130/article/details/38223319 对于各种存储类型非常详细的描述
http://www.jb51.net/article/74612.htm 如何操作游标类型
https://www.2cto.com/database/201301/186608.html 如何处理返回值或者返出值为游标类型的变量
http://www.cnblogs.com/medci/archive/2012/10/21/2733166.html
http://blog.csdn.net/jeathenzhang/article/details/8853607
http://blog.csdn.net/jvortex/article/details/51569505