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Re: from_unix time problem
Stephen is right. Here is some context:
Looking at the UDF source code (
https://github.com/apache/hive/blob/trunk/ql/src/java/org/apache/hadoop/hive/ql/udf/UDFFromUnixTime.java#L121),
 it's using SimpleDateFormat where the format string follows the convention
at
http://docs.oracle.com/javase/1.4.2/docs/api/java/text/SimpleDateFormat.html
So, 'HH' or 'kk' is likely what you want, based on whether you want 0 or
1-referenced hours.
On Tue, Sep 17, 2013 at 9:47 AM, Stephen Sprague <[EMAIL PROTECTED]> wrote:

> what happens if you use HH (instead of hh)?  Any diff?
>
>
> On Tue, Sep 17, 2013 at 8:49 AM, Robert Li <[EMAIL PROTECTED]>wrote:
>
>> Hi All
>>
>> I have a query where I want to convert the unix timestamp to an hour and
>> day bucket like so.
>>
>> *select case *
>> *when from_unixtime(cast(ts as bigint),'hh:mm') BETWEEN "00:01" and
>> "00:15" then "00:15"*
>> *when from_unixtime(cast(ts as bigint),'hh:mm') BETWEEN "00:16" and
>> "00:30" then "00:30"*
>> *.*
>> *when from_unixtime(cast(ts as bigint),'hh:mm') BETWEEN "00:46" and
>> "01:00" then "01:00"*
>> *.*
>> *when from_unixtime(cast(ts as bigint),'hh:mm') BETWEEN "12:46" and
>> "13:00" then "13:00"
>> *
>> *.*
>> *.*
>>
>> But the problem is it seems like it's converting both 01:00 and 13:00
>> into the same bucket in the result. How can I tell from_unixtime to convert
>> the times into a 24 format and not 12 hour format?
>>
>> timebucket date
>> 01:00 2013-09-17 13:00:05
>> 01:00 2013-09-17 01:00:05
>> --
>> *
>>
>> Robert Li | Integration and Support Engineer  | Kontagent
>> Kontagent is Hiring! <http://www.kontagent.com/why/careers/> | Check us
>> out in the press! <http://www.kontagent.com/why/news/>*
>> *Check out our blog: kScope <http://kaleidoscope.kontagent.com/> |
>> Twitter: @Kontagent <http://www.twitter.com/kontagent>*
>>
>
>