add jar /home/work/udf.jar;
create temporary function mytest as 'test.udf.ToLowerCase';
add jar /work/yule/online/LogTimeToDetailDate.jar;
create temporary function logtime as 'cn.focus.hadoop.sohu.LogTimeToDetailDate';
show functions;
http://blog.csdn.net/yfkiss/article/details/7885262
http://my.oschina.net/wangjiankui/blog/64230
hive udf使用
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转载自wangqiaowqo.iteye.com/blog/2033363
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