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This article mainly explains "the conversion method of date format in hive". The content in the article is simple and clear, and it is easy to learn and understand. Please follow the editor's train of thought to study and learn "the conversion method of date format in hive".

Conversion method of date format in hive:

The method of transforming 2014-11-10 and 20141110 into each other:

1.from_unixtime & & unix_timestamp

-- 20141110

Select from_unixtime (unix_timestamp ('2014-11-10mm yyyymmdd') from default.dual

-2014-11-10

Select from_unixtime (unix_timestamp ('20141110')), 'yyyy-mm-dd') from default.dual

2.substr + concat

-- 20141110

Select concat (substr ('2014-11-10)), substr (' 2014-11-10)), substr ('2014-11-10)) from default.dual

-2014-11-10

Select concat (substr ('20141110 gift record1),' -', substr ('20141110 magic mine5),' -', substr ('20141110)) from default.dual

Attach: hive gets the current time

Select from_unixtime (unix_timestamp (), 'yyyy-MM-dd HH:mm:ss') from default.dual

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