hive casting date

Question

In a hive table I have bunch of date that are in integer format.

Example

Table

Date
2015051517
2015051518
2015081517

Query

SELECT CAST(date TO INT)
FROM date_table;

How do I get the above example like below?

date
-------------
2015-05 15:17 
2015-05 15:18
2015-08 15:17

Thanks in advance!i

Answer 1

Since your date columns are in integer datatype, cast them as string and use Hive's built-in date functions.

Here what you need:

select date_format(from_unixtime(unix_timestamp(cast(your-column as string),'yyyyMMHHmm')),'yyyy-MM HH:mm') from table;

The above code gave me the following results.

2015-05 15:17 
2015-05 15:18
2015-08 15:17
Time taken: 0.088 seconds, Fetched: 3 row(s)