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https://issues.apache.org/jira/browse/HIVE-12776?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15085971#comment-15085971
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Alan Gates commented on HIVE-12776:
-----------------------------------
One question I have for this is what expectations are you putting on the format
of Hive's AST? I'm not in favor of declaring the AST a public interface,
because that would limit our ability to make changes to it. Without that
though anyone who calls this method may see different AST's depending on the
version of Hive they are working with.
> Add code for parsing any stand-alone HQL expression
> ---------------------------------------------------
>
> Key: HIVE-12776
> URL: https://issues.apache.org/jira/browse/HIVE-12776
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajat Khandelwal
> Assignee: Rajat Khandelwal
> Attachments: HIVE-12776.01.patch, HIVE-12776.02.patch
>
>
> Extensions that use Hive QL as their standard language, will benefit from
> this.
> Apache Lens uses HQL as its language of choice. To support that, it depends
> on a fork of Hive, which has such code. I'm planning to port that to Apache
> Hive.
> Relevant commit:
> https://github.com/InMobi/hive/commit/7caea9ed1d269c1cd1d1326cb39c1db7e0bf2bba#diff-fb3acd67881ceb02e83c2e42cf70beef
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