try rk in upper select statement as well
On Tue, Jul 10, 2012 at 12:12 PM, Raihan Jamal <jamalrai...@gmail.com>wrote: > 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 <tec...@gmail.com> 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 <jamalrai...@gmail.com> >> 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 >> > >> > > -- Nitin Pawar
