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https://issues.apache.org/jira/browse/HIVE-15445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15755306#comment-15755306
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Jesus Camacho Rodriguez commented on HIVE-15445:
------------------------------------------------
Fail is still present after HIVE-15192. It makes sense since it fails at
parsing time. Let me take another look at it: solution might be as simple as
adding a check for constant null value.
> Subquery failing with ClassCastException
> ----------------------------------------
>
> Key: HIVE-15445
> URL: https://issues.apache.org/jira/browse/HIVE-15445
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.2.0
> Reporter: Jesus Camacho Rodriguez
> Assignee: Jesus Camacho Rodriguez
> Attachments: HIVE-15445.patch
>
>
> To reproduce:
> {code:sql}
> CREATE TABLE table_7 (int_col INT);
> SELECT
> (t1.int_col) * (t1.int_col) AS int_col
> FROM (
> SELECT
> MIN(NULL) OVER () AS int_col
> FROM table_7
> ) t1
> WHERE
> (False) NOT IN (SELECT
> False AS boolean_col
> FROM (
> SELECT
> MIN(NULL) OVER () AS int_col
> FROM table_7
> ) tt1
> WHERE
> (t1.int_col) = (tt1.int_col));
> {code}
> The problem seems to be in the method that tries to resolve the subquery
> column _MIN(NULL)_. It checks the column inspector and ends up returning a
> constant expression instead of a column expression for _min(null)_.
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