hive命令行使用反射

• HIVE自带反射

1.hive> add jar /home/work/metastore.online/hive/lib/commons-codec-1.3.jar;                                                           
2.Added /home/work/metastore.online/hive/lib/commons-codec-1.3.jar to class path
3.Added resource: /home/work/metastore.online/hive/lib/commons-codec-1.3.jar
4.hive> select reflect("org.apache.commons.codec.binary.Base64","decodeBase64","NGJkYjRhLS1iMTQ2ZjQ5Ni5jb20") from test.dual limit 1;