oracle行列转换

http://topic.csdn.net/t/20050929/16/4302364.html
http://topic.csdn.net/t/20050929/09/4301014.html

Oracle多行记录合并/连接/聚合字符串的几种方法
http://blog.ccidnet.com/blog-htm-do-showone-uid-51502-type-blog-itemid-153656.html
http://www.china-askpro.com/msg45/qa43.shtml
http://topic.csdn.net/t/20060828/11/4980114.html

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