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https://issues.apache.org/jira/browse/HIVE-8089?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sergey Shelukhin resolved HIVE-8089.
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Resolution: Won't Fix
> Ordering is lost when limit is put in outer query
> -------------------------------------------------
>
> Key: HIVE-8089
> URL: https://issues.apache.org/jira/browse/HIVE-8089
> Project: Hive
> Issue Type: Bug
> Reporter: Laljo John Pullokkaran
> Assignee: Sergey Shelukhin
>
> It seems like hive supports order by, limit in sub queries (compiler doesn't
> complain). However ordering seems to be lost based on where you place the
> limit. I haven't debugged the issue.
> ex:
> select key, c_int from (select key, c_int from (select key, c_int from t1
> order by c_int limit 5)t1)t1;
> null NULL
> null NULL
> 1 1
> 1 1
> 1 1
> select key, c_int from (select key, c_int from (select key, c_int from t1
> order by c_int)t1 limit 5)t1;
> 1 1
> 1 1
> 1 1
> null NULL
> null NULL
> select key, c_int from (select key, c_int from (select key, c_int from t1
> order by c_int limit 5)t1 limit 5)t1;
> 1 1
> 1 1
> 1 1
> null NULL
> null NULL
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