[jira] [Commented] (NIFI-3064) ExecuteSQL convert to Avro fails when a MySQL query returns two columns with the same name even with different aliases

["Karthik Narayanan (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-3064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15675832#comment-15675832 ] 

Karthik Narayanan commented on NIFI-3064:
-----------------------------------------

is it worth having an if...so we can do based on the type of db.

If mysql|oracle
  nameorLabel= label!=null?label:name
else
 nameorLabel= name!=null?name:label

just a thought
  

> ExecuteSQL convert to Avro fails when a MySQL query returns two columns with the same name even with different aliases
> ----------------------------------------------------------------------------------------------------------------------
>
>                 Key: NIFI-3064
>                 URL: https://issues.apache.org/jira/browse/NIFI-3064
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 1.0.0, 0.7.0, 0.6.1
>            Reporter: Karthik Narayanan
>            Assignee: Matt Burgess
>
> For the following query:
> select A.host as host1,B.host as host from `hosts` A  join host2 B on B.hostid=A.hostid;
> A.host and B.host are columns that have same name, but come from different tables, and have a different alias name. But looks like Avro conversion is ignoring the alias and just looking at the column name. This causes the query to fail with this error
> Duplicate Field Name in any.data.hosts ; name type UNION pos:1 and name type UNION pos:0.
> I have attached a screenshot for the same. 



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