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Re: HBase table - distinct values

Typically this is something done as a MapReduce job.

http://hbase.apache.org/book.html#mapreduce.example

7.2.4. HBase MapReduce Summary to HBase Example

However, if this is an operation to be performed frequently by an
application then doing frequent MapReduce jobs for summaries probably
isn't the best idea.  Either produce periodic summaries into another Hbase
table, or denormalize and keep track of the required summaries upon data
load.

On 10/10/12 6:59 AM, "[EMAIL PROTECTED]"
<[EMAIL PROTECTED]> wrote:

>Hi all,
>  Is it possible to select distinct value from Hbase table.
>
>Example :-
>   what is the equivalant code for the below Oracle code  in Hbase  ?
>
>  Select count (distinct deptno) from emp ;
>
>Regards
>Raviprasad. T
>
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