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https://issues.apache.org/jira/browse/HIVE-21665?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16829831#comment-16829831
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slim bouguerra commented on HIVE-21665:
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cc [~vgarg] / [~jdere]
> Unable to reconstruct valid SQL query from AST when back ticks are used
> -----------------------------------------------------------------------
>
> Key: HIVE-21665
> URL: https://issues.apache.org/jira/browse/HIVE-21665
> Project: Hive
> Issue Type: Bug
> Reporter: slim bouguerra
> Priority: Major
>
> Hive-6013 have introduced a parser rule that removes all the
> {code:java}
> `{code}
> from identifiers or query alias, this can result in some issue when we need
> to reconstruct the actual SQL query from the AST.
> To reproduce the bug you can use explain analyze statement as the following
> query
> {code:java}
> explain analyze select 'literal' as `alias with space`;
> {code}
> This bugs will affect how Ranger plugin and probably result cache, where in
> both places we need to reconstruct the query from AST.
> The current work around is to avoid white spaces within Aliases.
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