Hi,
The file Groupby_condition.txt looks like below where data is seperated by |
Column1|Y
Column2|N
Column3|Y
On 26 January 2016 at 07:17, Prashant Kommireddi <prkommire...@apache.org>
wrote:
> You are flattening a scalar column "groupBy". What does the file
> "GroupBy_Condition" look like? I'm guessing you want to load that as a
> bag/tuple before flattening, but you're reading as a chararray instead.
>
> On Monday, January 25, 2016, Divya Gehlot <divya.htco...@gmail.com> wrote:
>
> > Hi,
> > I have two files
> > Group_condition.txt
> > Colun1|Y
> > Column2|N
> > Column3|Y
> >
> > Load_cfl = LOAD '/user/hdfs/file.txt' USING PigStorage('|') as
> >
> >
> (code:chararray,book_code:int,currency_code:chararray,start_date:datetime,end_date:datetime,type:chararray,amount:double
> > );
> > Load_GroupBy = LOAD '/user/hdfs/Groupby_Condition.txt' USING
> > PigStorage('|') as (groupBy:chararray , condition :chararray);
> > filter_col = FILTER Load_GroupBy BY (condition == 'Y');
> > flatn_col = FOREACH filter_col GENERATE FLATTEN(groupBy);
> > tuple_col = FOREACH flatn_col GENERATE TOTUPLE(groupBy);
> > cfl_grp = GROUP Load_cfl BY (flatn_col);
> >
> > getting error :
> >
> > > Invalid scalar projection: flatn_col : A column needs to be projected
> > from
> > > a relation for it to be used as a scalar
> >
> >
> >
> > What am I missing in above ?
> > Would really appreciate the help.
> >
> > Thanks,
> > Divya
> >
>
