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https://issues.apache.org/jira/browse/HIVE-14719?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15477660#comment-15477660
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Ashutosh Chauhan commented on HIVE-14719:
-----------------------------------------
Thanks [~lirui] for detailed explanation. Your patch is in right direction. If
we remove a node and use it elsewhere then we should clear its root node before
removing it. Can you also add a test case in your patch?
> ASTNode rootNode is not maintained properly when changing child/parent
> relation
> -------------------------------------------------------------------------------
>
> Key: HIVE-14719
> URL: https://issues.apache.org/jira/browse/HIVE-14719
> Project: Hive
> Issue Type: Bug
> Reporter: Rui Li
> Assignee: Rui Li
> Attachments: HIVE-14719.1.patch
>
>
> When I run some query like:
> {code}
> set hive.cbo.enable=false;
> select * from A where exists (select * from B where B.k1=A.k1 and B.k2=A.k2);
> {code}
> It gets error like:
> {noformat}
> FAILED: SemanticException Line 0:-1 Invalid table alias or column reference
> 'sq_1': (possible column names are: _table_or_col b) k2) sq_corr_1)) (tok, (.
> (tok_table_or_col sq_1) sq_corr_1))
> {noformat}
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