Oracle语句 规格严格

http://www.iteye.com/topic/1122198

http://www.iteye.com/topic/359502

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http://www.iteye.com/topic/512839

http://charlescui.iteye.com/

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http://phpor.net/blog/post/849/

http://blog.csdn.net/jiang_chuang/article/details/6540940