[jira] [Commented] (HIVE-11282) CBO (Calcite Return Path): Inferring Hive type char/varchar of length zero which is not allowed

["Pengcheng Xiong (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-11282?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14659205#comment-14659205 ] 

Pengcheng Xiong commented on HIVE-11282:
----------------------------------------

Hi [~jcamachorodriguez] and [~ashutoshc], it seems that now we still have other problems after this patch (see HIVE-11436). Shall we just use String for both char and varchar? Thanks. 

> CBO (Calcite Return Path): Inferring Hive type char/varchar of length zero which is not allowed
> -----------------------------------------------------------------------------------------------
>
>                 Key: HIVE-11282
>                 URL: https://issues.apache.org/jira/browse/HIVE-11282
>             Project: Hive
>          Issue Type: Sub-task
>          Components: CBO
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>             Fix For: 2.0.0
>
>         Attachments: HIVE-11282.patch
>
>
> When RT is on, we try to infer the Hive type from the Calcite type for the value '’ e.g. in udf3.q, and we end up with char (length=0) as a result. The min length of char/varchar in Hive is 1, thus an Exception is thrown.



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