[jira] [Assigned] (DRILL-6606) Hash Join returns incorrect data types when joining subqueries with limit 0

["Arina Ielchiieva (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DRILL-6606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arina Ielchiieva reassigned DRILL-6606:
---------------------------------------

    Assignee: Boaz Ben-Zvi

> Hash Join returns incorrect data types when joining subqueries with limit 0
> ---------------------------------------------------------------------------
>
>                 Key: DRILL-6606
>                 URL: https://issues.apache.org/jira/browse/DRILL-6606
>             Project: Apache Drill
>          Issue Type: Bug
>            Reporter: Bohdan Kazydub
>            Assignee: Boaz Ben-Zvi
>            Priority: Blocker
>             Fix For: 1.14.0
>
>
> PreparedStatement for query
> {code:sql}
> SELECT l.l_quantity, l.l_shipdate, o.o_custkey
> FROM (SELECT * FROM cp.`tpch/lineitem.parquet` LIMIT 0) l
>     JOIN (SELECT * FROM cp.`tpch/orders.parquet` LIMIT 0) o 
>     ON l.l_orderkey = o.o_orderkey
> LIMIT 0
> {code}
>  is created with wrong types (nullable INTEGER) for all selected columns, no matter what their actual type is. This behavior reproduces with hash join only and is very likely to be caused by DRILL-6027 as the query works fine before this feature was implemented.
> To reproduce the problem you can put the aforementioned query into TestPreparedStatementProvider#joinOrderByQuery() test method.



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