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https://issues.apache.org/jira/browse/DRILL-7893?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17335727#comment-17335727
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ASF GitHub Bot commented on DRILL-7893:
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vvysotskyi opened a new pull request #2208:
URL: https://github.com/apache/drill/pull/2208
# [DRILL-7893](https://issues.apache.org/jira/browse/DRILL-7893): Column
alias is not working for a parquet file
## Description
Updated visitors applied after optimizations to prevent creating unnecessary
copies that will lose actual row type.
Added a call to create a top project after all optimizations to ensure that
column names will match the name from row type.
## Documentation
NA
## Testing
Added unit test.
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> Column alias is not working for a parquet file
> ----------------------------------------------
>
> Key: DRILL-7893
> URL: https://issues.apache.org/jira/browse/DRILL-7893
> Project: Apache Drill
> Issue Type: Bug
> Components: Storage - Parquet
> Affects Versions: 1.17.0
> Reporter: Matthias Rosenthaler
> Assignee: Vova Vysotskyi
> Priority: Major
> Fix For: 1.19.0
>
> Attachments: values.parquet
>
>
> The following query results in a column name of "shot_id" instead of the
> expected "x".
> SELECT shot_id as x FROM values.parquet WHERE step = 'RPCurve_001'
> The strange thing is, if I modify the query, like adding a limit clause, it
> is working:
> SELECT shot_id as x FROM values.parquet WHERE step = 'RPCurve_001' LIMIT 1000
> [^values.parquet]
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