M, Navis류승우 wrote:
>
>> For "cache.expr.evaluation" problem, it's fixed in
>> https://issues.apache.org/jira/browse/HIVE-7314 (will be included in
>> next release)
>>
>> But I agree that it can be a critical problem for users of 0.12.0 and
>> 0.13.
wiki.apache.org/confluence/display/Hive/LanguageManual+Select>
>> page is one possibility, or maybe you'll find a better place for it.
>>
>> If you want to revise the description in hive-default.xml.template, you
>> need to open a JIRA and patch the file.
>>
>&g
for details). The
>> Select
>> <https://cwiki.apache.org/confluence/display/Hive/LanguageManual+Select>
>> page is one possibility, or maybe you'll find a better place for it.
>>
>> If you want to revise the description in hive-default.xml.template,
I have used a configuration property 'hive.cache.expr.evaluation' in hive
0.12 recently and found it useful. But I cannot find any documents about it
on the wiki page:
https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties.
Indeed, I pick it up from the source code.
I think it m
here is the document
https://cwiki.apache.org/confluence/display/Hive/LanguageManual+UDF#LanguageManualUDF-DateFunctions
2013/11/25 郭士伟
> or using the Date functions? Such as unix_timestamp to convert date
> string to unix timestamp and from_unixtime convert unix timestamp to
&g
or using the Date functions? Such as unix_timestamp to convert date string
to unix timestamp and from_unixtime convert unix timestamp to string
2013/11/25 John Omernik
> I wouldn't worry about efficiency to much:
>
> concat('20', split(date_field, '\\/')[2], '-', split(date_field,
> '\\/')[1],
