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https://issues.apache.org/jira/browse/HIVE-3107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293887#comment-13293887
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Richard Ding commented on HIVE-3107:
------------------------------------
@Edward, why do you say this is by design?
Why does the following statement is legal?
{code}
select t.c from t group by t.c sort by c;
{code}
while this one is not?
{code}
select t.c from t group by t.c sort by t.c;
{code}
> More semantic analysis errors
> -----------------------------
>
> Key: HIVE-3107
> URL: https://issues.apache.org/jira/browse/HIVE-3107
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.9.0
> Reporter: Richard Ding
>
> This is related to HIVE-1922.
> Following queries all fail with various SemanticExceptions:
> {code}
> explain select t.c from t group by c;
> explain select t.c from t group by c sort by t.c;
> explain select t.c as c0 from t group by c0;
> explain select t.c from t group by t.c sort by t.c;
> {code}
> It is true that one could always find a version of any of above queries that
> works. But one has to try to find out and it doesn't work well with machine
> generated SQL queries.
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