[jira] [Commented] (NIFI-4393) AbstractDatabaseFetchProcessor handles SQL Server brackets incorrectly

[Koji Kawamura (JIRA)]

    [ 
https://issues.apache.org/jira/browse/NIFI-4393?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16335467#comment-16335467
 ] 

Koji Kawamura commented on NIFI-4393:
-------------------------------------

[PR 2424|https://github.com/apache/nifi/pull/2424] is ready for review.

> AbstractDatabaseFetchProcessor handles SQL Server brackets incorrectly
> ----------------------------------------------------------------------
>
>                 Key: NIFI-4393
>                 URL: https://issues.apache.org/jira/browse/NIFI-4393
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>    Affects Versions: 1.4.0
>            Reporter: Mikołaj Siedlarek
>            Assignee: Koji Kawamura
>            Priority: Major
>         Attachments: 
> 0001-Handle-SQL-Server-square-brackets-in-AbstractDatabas.patch
>
>
> SQL Server allows column names to contain whitespace, in which case they are 
> written in SQL queries inside square brackets. When using processors based on 
> {{AbstractDatabaseFetchProcessor}}, such as {{QueryDatabaseTable}} they have 
> to be specified in  "Maximum-value Columns" in square brackets, because 
> otherwise they would break a SELECT query. However, when such column name is 
> retrieved from ResultSetMetaData, the driver returns it without square 
> brackets. This causes a mismatch between the key used to save last seen 
> maximum value in processor's state and the one used to search for the value 
> later.
> I'm not sure whether the attached patch is very elegant, but it fixes the 
> issue in a simplest way possible.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)