待整理
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+ORC
https://blog.csdn.net/yu616568/article/details/51868447
https://www.cnblogs.com/ITtangtang/p/7677912.html
https://orc.apache.org/specification/ORCv0/
原文：https://www.cnblogs.com/z1141000271/p/12933310.html