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https://issues.apache.org/jira/browse/HIVE-9009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14231919#comment-14231919
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Xuefu Zhang commented on HIVE-9009:
-----------------------------------
I believe this JIRA deserves a better title. The problem described does not
seem to be a problem, contraversial at least. To have an order by, you need a
select, not a union. To achieve what you want, you need to rewrite your query
as:
{code}
select * from (select id from A union all select id from B) C order by C.id;
{code}
> order by
> --------
>
> Key: HIVE-9009
> URL: https://issues.apache.org/jira/browse/HIVE-9009
> Project: Hive
> Issue Type: Sub-task
> Reporter: Pengcheng Xiong
>
> Currently Hive will treat
> select id from A
> union all
> select id from B
> order by id
> as
> select id from A
> union all
> (select id from B
> order by id)
> However, it should be treated as
> (select id from A
> union all
> select id from B)
> order by id
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