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https://issues.apache.org/jira/browse/HIVE-11251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14626749#comment-14626749
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Ashutosh Chauhan commented on HIVE-11251:
-----------------------------------------
This indicates to me that constant literal of length 0 (empty string) of type
varchar/char will throw an error. If so, its a bug in Hive which needs to be
fixed independently. Can you confirm that? Not sure, but following query may
repro that
{code}
select (cast ('') as varchar) from src;
{code}
> CBO (Calcite Return Path): Extending ExprNodeConverter to consider additional
> types
> -----------------------------------------------------------------------------------
>
> Key: HIVE-11251
> URL: https://issues.apache.org/jira/browse/HIVE-11251
> Project: Hive
> Issue Type: Sub-task
> Components: CBO
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-11251.patch
>
>
> Some types are not considered currently in ExprNodeConverter e.g.
> INTERVAL_YEAR_MONTH or INTERVAL_DAY_TIME. To reproduce it, we can run
> interval_udf.q with the return path on.
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