-Re: ROW_NUMBER() equivalent in Hive
Ashutosh Chauhan 2013-02-21, 16:17
If you are willing to be on bleeding edge, this and many other partitioning
and windowing functionality some of us are developing in a branch over at:
Check out this branch, build hive and than you can have row_number()
functionality. Look in
ql/src/test/queries/clientpositive/ptf_general_queries.q which has about 60
or so example queries demonstrating various capabilities which we have
already working (including row_number).
We hope to have this branch merged in trunk soon.
Hope it helps,
On Wed, Feb 20, 2013 at 11:33 PM, kumar mr <[EMAIL PROTECTED]> wrote:
> This is Kumar, and this is my first question in this group.
> I have a requirement to implement ROW_NUMBER() from Teradata in Hive
> where partitioning happens on multiple columns along with multiple column
> It can be easily implemented in Hadoop MR, but I have to do in Hive. By
> doing in UDF can assign same rank to grouping key considering dataset is
> small, but ordering need to be done in prior step.
> Can we do this in lot simpler way?
> Thanks in advance.