Shulou(Shulou.com)05/31 Report--

This article is to share with you about what you need to pay attention to in the new fields in hive. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

The newly added fields in hive should be noted as follows:

1) if there is a partition field in the table, the partition must be deleted before the data can be inserted, otherwise it is null

2) the order of the insert override TABLE table1 select counm1,counm2 from table2; counm1,counm2 must be the same as the order of the fields in table1, otherwise the inserted value is incorrect.

Thank you for reading! This is the end of this article on "what do you need to pay attention to in the new fields in hive?". I hope the above content can be of some help to you, so that you can learn more knowledge. if you think the article is good, you can share it for more people to see!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.