[jira] [Assigned] (KYLIN-4077) Kylin does not handle queries with GROUP BY constant.

["Yaqian Zhang (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KYLIN-4077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yaqian Zhang reassigned KYLIN-4077:
-----------------------------------

    Assignee: Yaqian Zhang

> Kylin does not handle queries with GROUP BY constant. 
> ------------------------------------------------------
>
>                 Key: KYLIN-4077
>                 URL: https://issues.apache.org/jira/browse/KYLIN-4077
>             Project: Kylin
>          Issue Type: Bug
>         Environment: Apache Kylin 2.6.2-hadoop3
>            Reporter: Krzysztof Zarzycki
>            Assignee: Yaqian Zhang
>            Priority: Major
>
> I connect Tableau to Kylin and one of the queries it generates has a clause {{GROUP BY 1.100000001}}  , that Kylin cannot handle. 
> {code:java}
> From line 1, column 8 to line 1, column 15: Aggregate expression is illegal in GROUP BY clause while executing SQL: "select count(*) from report_sales.kylin_sales_model GROUP BY 1.1000001 LIMIT 50000"  {code}
> Alternatively, I connected to Kylin with Hive JdbcStorageHandler and it translates the query to {{GROUP BY TRUE}} and that is also not handled. 
> {code:java}
> No DataTypeSerializer for type _literal_type while executing SQL: "select count(*) from report_sales.kylin_sales_model GROUP BY TRUE LIMIT 50000"  {code}
> Expected behavior:
> Kylin supports queries with {{GROUP BY <any constant>}} 



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