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From Robert Li <robert...@kontagent.com>
Subject Re: from_unix time problem
Date Tue, 17 Sep 2013 17:47:48 GMT
Thanks, that worked!!


On Tue, Sep 17, 2013 at 12:56 PM, Mark Grover <mark@apache.org> wrote:

> 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 <spragues@gmail.com>wrote:
>
>> what happens if you use HH (instead of hh)?  Any diff?
>>
>>
>> On Tue, Sep 17, 2013 at 8:49 AM, Robert Li <robert.li@kontagent.com>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>*
>>>
>>
>>
>


-- 
*

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>*

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