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From Vidya Sujeet <sjayatheer...@gmail.com>
Subject Re: Converting datime formats in Hive - please help
Date Sun, 26 Oct 2014 21:05:48 GMT
Hi Harpreet,

I used the below statement but it doesn't give me the correct time. It
gives me 2000-12-31 instead of 2001/02/05..what am I doing wrong?

 select from_unixtime(unix_timestamp('05-FEB-01', 'DD-MMM-YY'))
thanks,
Vidya


On Sun, Oct 26, 2014 at 1:06 PM, Harpreet Singh Bedi <
harpreet.bedi9@gmail.com> wrote:

> You’ll have to use lowercase “y” and lowercase “d” for year and date of
> the month.
>
> On Oct 26, 2014, at 15:03, Harpreet Singh Bedi <Harpreet.Bedi9@gmail.com>
> wrote:
>
> Yup, that should work!
>
> On Oct 26, 2014, at 15:00, Vidya Sujeet <sjayatheertha@gmail.com> wrote:
>
> Ok, the pattern should be (DD-MMM-YY) all in upper case! thanks
>
> On Sun, Oct 26, 2014 at 12:47 PM, Vidya Sujeet <sjayatheertha@gmail.com>
> wrote:
>
>> (dd-mmm-yy) returns NULL
>>
>> On Sun, Oct 26, 2014 at 12:11 PM, Vidya Sujeet <sjayatheertha@gmail.com>
>> wrote:
>>
>>> But what should the format be if the source has data coming *"25-FEB-01' ?
>>> appreciate your help.*
>>>
>>> On Sun, Oct 26, 2014 at 12:01 PM, Nagarjuna Vissarapu <
>>> nagarjuna.viss@gmail.com> wrote:
>>>
>>>> Timestamp class is there to do this.
>>>> On Oct 27, 2014 12:26 AM, "Vidya Sujeet" <sjayatheertha@gmail.com>
>>>> wrote:
>>>>
>>>>> Hi,
>>>>>
>>>>> The date time format coming from the source is* "25-FEB-01' .* I want
>>>>> to convert it to the following format. *'MM/DD/YYYY' *. How can we do
>>>>> this in Hive?
>>>>>
>>>>>
>>>>> I see that as per the documentation
>>>>>
>>>>>
>>>>> https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-DateFunctions
>>>>>
>>>>> I could possibly convert the string date to a Unix time stamp in
>>>>> seconds using the below UDF. However, what is the string pattern if the
>>>>> date at source is coming this way* "25-FEB-01'* ? The link provided
>>>>> to look up for the patterns does not work.
>>>>>
>>>>> Please help.
>>>>>
>>>>> *Name:* unix_timestamp (string date, string pattern) function.
>>>>> *Description: *Convert time string with given pattern (see [
>>>>> http://java.sun.com/j2se/1.4.2/docs/api/java/text/SimpleDateFormat.html])
>>>>> to Unix time stamp (in seconds), return 0 if fail:
>>>>> unix_timestamp('2009-03-20', 'yyyy-MM-dd') = 1237532400.
>>>>>
>>>>>
>>>>>
>>>>> Vidya
>>>>>
>>>>>
>>>>>
>>>>>
>>>
>>
>
>
>

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