Hive insert overwrite table xxx 与 insert into table xxx 区别
INSERT OVERWRITE will overwrite any existing data in the table or partitionINSERT INTO will append to the table or partition, keeping the existing data intact(完整无缺的). 也就是说 overwrite会覆盖现有的数据,而into是直...
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2018-06-08 14:16:56 ·
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