Thanks, so, I guess only java is supported, right? On Mon, Mar 28, 2011 at 11:27 AM, Christopher, Pat < [email protected]> wrote:
> You can create UDFs, UDAFs and UDTFs. > http://wiki.apache.org/hadoop/Hive/HivePlugins > > > > Pat > > > > *From:* Michael Jiang [mailto:[email protected]] > *Sent:* Monday, March 28, 2011 11:13 AM > *To:* [email protected] > *Subject:* UDF of processing a column like pig? > > > > I want to have a function that returns the hour information from a date > string (wiz not a known format supported by current date functions, but > basically this is just a use case example). In pig, you can create a UDF > (user defined function) and apply it to a column. Is there an equivalent > thing in Hive? I know I can write a mapper to take whole line and transform > the specific column I want. But it's not convenient because you have to > duplicate the same code for each different source table. > > Thanks! >
