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From Khurram Faraaz <kfar...@maprtech.com>
Subject Re: WHERE clause causing a ClassCastException on HBase tables
Date Thu, 01 Sep 2016 09:03:39 GMT
What is your Drill version and HBase version ?

On Thu, Sep 1, 2016 at 5:05 AM, Ki Kang <Ki.Kang@ds-iq.com> wrote:

> Can someone help or point me to where I can maybe get some help?
>
> I am trying to figure out why I am getting a ClassCastException when I do
> the following query.  If I change the "FROM" clause to just "FROM
> (VALUES(0))" it works just fine, but whenever I have "FROM" to an HBase
> table, I get the error.  I know that the HBase table is valid because if I
> remove the WHERE clause, the query does not throw an error.
>
> SELECT b.`date` FROM (
>   SELECT TO_DATE(CONCAT(a.`jArray`[0], '-', a.`jArray`[1], '-',
> a.`jArray`[2]), 'yyyy-MM-dd') `date` FROM (
>     SELECT CONVERT_FROM(REGEXP_REPLACE('["2016":"08":"03"]', ':', ','),
> 'JSON') `jArray`
>     --FROM (VALUES(0))
>     FROM `hbase`.`SomeValidTable`
>   ) a
> ) b
> WHERE b.`date` = '2016-08-03'
> LIMIT 1
>
> SYSTEM ERROR: ClassCastException: org.apache.drill.common.expression.FunctionCall
> cannot be cast to org.apache.drill.common.expression.SchemaPath
>
>
>

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