[ 
https://issues.apache.org/jira/browse/NIFI-5049?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16433390#comment-16433390
 ] 

ASF GitHub Bot commented on NIFI-5049:
--------------------------------------

GitHub user gardellajuanpablo opened a pull request:

    https://github.com/apache/nifi/pull/2625

    NIFI-5049 Fix handling of Phonenix datetime columns

    Fixed Error: ERROR 203 (22005): Type mismatch. TIMESTAMP
    and VARCHAR for <COLUMN_NAME> = '2015-09-12 18:19:43.293'
    (sample date).
    
    The fix consists on applying the same fix added to Oracle DB,
    based on NIFI-2323 approach. The changes introduced were:
    
    1) A Phoenix database adapter.
    2) Handling timestamp, date and time in Phoenix.
    3) Added a close to result set in QueryDatabaseTable processor
       (not related to this bug, but I think it will be useful to
        fix).
    
    The changes don't break existing code.
    
    Thank you for submitting a contribution to Apache NiFi.
    
    In order to streamline the review of the contribution we ask you
    to ensure the following steps have been taken:
    
    ### For all changes:
    - [ ] Is there a JIRA ticket associated with this PR? Is it referenced 
         in the commit message?
    
    - [ ] Does your PR title start with NIFI-XXXX where XXXX is the JIRA number 
you are trying to resolve? Pay particular attention to the hyphen "-" character.
    
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You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/gardellajuanpablo/nifi NIFI-5049

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/nifi/pull/2625.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #2625
    
----
commit 20f2638e7f792ec84f61ea42f135587e2f30ea1f
Author: Gardella Juan Pablo <gardellajuanpablo@...>
Date:   2018-04-11T04:23:00Z

    NIFI-5049 Fix handling of Phonenix datetime columns
    
    Fixed Error: ERROR 203 (22005): Type mismatch. TIMESTAMP
    and VARCHAR for <COLUMN_NAME> = '2015-09-12 18:19:43.293'
    (sample date).
    
    The fix consists on applying the same fix added to Oracle DB,
    based on NIFI-2323 approach. The changes introduced were:
    
    1) A Phoenix database adapter.
    2) Handling timestamp, date and time in Phoenix.
    3) Added a close to result set in QueryDatabaseTable processor
       (not related to this bug, but I think it will be useful to
        fix).
    
    The changes don't break existing code.

----


> Fixhandling of Phonenix datetime columns in QueryDatabaseTable and 
> GenerateTableFetch
> -------------------------------------------------------------------------------------
>
>                 Key: NIFI-5049
>                 URL: https://issues.apache.org/jira/browse/NIFI-5049
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.5.0
>            Reporter: Gardella Juan Pablo
>            Assignee: Matt Burgess
>            Priority: Major
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> QueryDatabaseAdapter does not work against Phoenix DB if it should convert 
> TIMESTAMP. The error is described below:
> [https://stackoverflow.com/questions/45989678/convert-varchar-to-timestamp-in-hbase]
> Basically, it's required to use TO_TIMESTAMP(MAX_COLUMN) to make it work. 
> See 
> [https://lists.apache.org/thread.html/%3cca+kifscje8ay+uxt_d_vst4qgzf4jxwovboynjgztt4dsbs...@mail.gmail.com%3E]



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