Hive Operators and User-Defined Functions (UDFs)

LanguageManual UDF

https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-Built-inFunctions

https://github.com/godmaybelieve
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原文地址：https://www.cnblogs.com/yuyu666/p/15019853.html