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https://issues.apache.org/jira/browse/HIVE-18725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16429317#comment-16429317
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Igor Kryvenko commented on HIVE-18725:
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Failed tests are not related.
> Improve error handling for subqueries if there is wrong column reference
> ------------------------------------------------------------------------
>
> Key: HIVE-18725
> URL: https://issues.apache.org/jira/browse/HIVE-18725
> Project: Hive
> Issue Type: Improvement
> Components: Query Planning
> Reporter: Vineet Garg
> Assignee: Igor Kryvenko
> Priority: Major
> Attachments: HIVE-18725.01.patch, HIVE-18725.02.patch,
> HIVE-18725.03.patch, HIVE-18725.04.patch, HIVE-18725.05.patch
>
>
> If there is a column reference within subquery which doesn't exist Hive
> throws misleading error message.
> e.g.
> {code:sql}
> select * from table1 where table1.col1 IN (select col2 from table2 where
> table2.col1=table1.non_existing_column) and table1.col1 IN (select 4);
> {code}
> The above query, assuming table1 doesn't have non_existing_column, will throw
> following misleading error:
> {noformat}
> FAILED: SemanticException Line 0:-1 Unsupported SubQuery Expression 'col1':
> Only 1 SubQuery expression is supported.
> {noformat}
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