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Date: Tue, 12 Jun 2012 20:17:42 +0000 (UTC)
From: "Edward Capriolo (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
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Subject: [jira] [Commented] (HIVE-3107) More semantic analysis errors
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    [ https://issues.apache.org/jira/browse/HIVE-3107?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13293892#comment-13293892 ] 

Edward Capriolo commented on HIVE-3107:
---------------------------------------

"By design" I mean to say that it has always been that way. We have unit tests and as far as I know we have had no regressions. If we want semantic analysis to be easier or more intelligent it is a "feature request" not an "error".
                
> 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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