應用場景使用spark將數據落入表中可能會存在列名不對應等情況，需要更改列名

hive> desc uid_follow_anchor_number; OK uid string target_uid string timestamp string Time taken: 0.097 seconds, Fetched: 3 row(s) hive> ALTER TABLE uid_follow_anchor_number CHANGE uid uid_1 string; OK Time taken: 0.223 seconds hive> ALTER TABLE uid_follow_anchor_number CHANGE target_uid uid string; OK Time taken: 0.233 seconds hive> ALTER TABLE uid_follow_anchor_number CHANGE uid_1 target_uid string; OK Time taken: 0.222 seconds hive> desc uid_follow_anchor_number; OK target_uid string uid string timestamp string Time taken: 0.088 seconds, Fetched: 3 row(s)

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