如何将 Julian 日期转换为 Hive 上的日历日期？

Question

Is there any Hive function available to convert from Julian date to calendar date?

There are multiple types of Julian date. The Julian date I have takes 15001 for 2015-01-01 .

I couldn't find any relevant information on this page:

Hive Manual - Date Functions

Answer 1

 date_add('2015-01-01', juliadate - 15001)

Answer 2

Just wanted to add.

The below is for julian date format yyyyDDD

Input_julian_date : 2006121

substr(from_unixtime(unix_timestamp(cast(cast(Input_julian_date as int) as string),'yyyyDDD')),1,10) 

Output : 2006-05-01

Answer 3

Using "yyyyDDD" correctly converts Julian dates in Hive.

For example, I had a string column like "201707299999ABC" where the first 7 digits were the Julian date:

TO_DATE(FROM_UNIXTIME(UNIX_TIMESTAMP(SUBSTRING(my_julian_column, 0, 7), "yyyyDDD")))

Produces 2017-03-13 as expected.

Answer 4

Julian Date Format -- yyyyDDD The Date Format which is expected -- 'yyyy-MM-dd'

from_unixtime(unix_timestamp(cast(**julianl_date_col** as string),'yyyyDDD'),'yyyy-MM-dd')