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https://issues.apache.org/jira/browse/HIVE-21727?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16839576#comment-16839576
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David Mollitor commented on HIVE-21727:
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h5. hive.groupby.position.alias
* Default Value: {{false}}
* Added In: Hive 2.2.0 with HIVE-15797
Whether to enable using Column Position Alias in [GROUP
BY|https://cwiki.apache.org/confluence/display/Hive/LanguageManual+GroupBy].
h5. hive.orderby.position.alias
* Default Value: {{true}}
* Added In: Hive 2.2.0 with HIVE-15797
Whether to enable using Column Position Alias in [ORDER
BY|https://cwiki.apache.org/confluence/display/Hive/LanguageManual+SortBy#LanguageManualSortBy-SyntaxofOrderBy].
Do you know why 'orderby' is 'false' and 'groupby' is 'true'?
> Allow For Ordinal Substitution
> -------------------------------
>
> Key: HIVE-21727
> URL: https://issues.apache.org/jira/browse/HIVE-21727
> Project: Hive
> Issue Type: New Feature
> Components: Query Processor
> Affects Versions: 4.0.0, 3.2.0
> Reporter: David Mollitor
> Priority: Major
>
> Impala allows for ordinal substitution. Add a compatible feature to Hive to
> allow Hive to be more compatible with Impala. Allows for more of a drop-in
> replacement.
> [IMPALA-8548]
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