Thanks for commenting out. Yes I figured that out, its a UDF. So now I have
created a new UDF Rank and added to classpath also. But when I am again
running the below query-
SELECT buyer_id, item_id, created_time
FROM (
SELECT buyer_id, item_id, Rank(buyer_id) as rk, created_time
FROM testingtable1
DISTRIBUTE BY buyer_id, item_id
SORT BY buyer_id, item_id, created_time desc
) a
WHERE rk < 10
ORDER BY buyer_id, rk;
I am getting this below error-
*FAILED: Error in semantic analysis: line 9:19 Invalid Table Alias or
Column Reference rk*
Why is it so? Any suggestions?
*Raihan Jamal*
On Mon, Jul 9, 2012 at 10:51 PM, Vijay <[email protected]> wrote:
> hive has no built-in rank function. you'd need to use a user-defined
> function (UDF) to simulate it. there are a few custom implementations
> on the net that you can leverage.
>
> On Mon, Jul 9, 2012 at 10:40 PM, Raihan Jamal <[email protected]>
> wrote:
> > What's wrong with the below query.
> >
> >
> > SELECT buyer_id, item_id, created_time
> > FROM (
> > SELECT buyer_id, item_id, rank(buyer_id) as rank, created_time
> > FROM testingtable1
> > DISTRIBUTE BY buyer_id, item_id
> > SORT BY buyer_id, item_id, created_time desc
> > ) a
> > WHERE rank < 10
> > ORDER BY buyer_id, rank
> >
> >
> > I am always getting as -
> >
> > FAILED: Error in semantic analysis: line 3:30 Invalid Function rank
> >
> >
> > I am using Hive 0.6 I guess.
> >
> >
> >
> > Raihan Jamal
> >
>
