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From "Harsh J (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HIVE-7178) Table alias cannot be used in GROUPING SETS clause if there are more than one column in it
Date Mon, 13 Oct 2014 23:45:33 GMT

     [ https://issues.apache.org/jira/browse/HIVE-7178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Harsh J resolved HIVE-7178.
---------------------------
    Resolution: Fixed

Same as HIVE-6950. Resolving this one as dupe as the other one has comments.

> Table alias cannot be used in GROUPING SETS clause if there are more than one column
in it
> ------------------------------------------------------------------------------------------
>
>                 Key: HIVE-7178
>                 URL: https://issues.apache.org/jira/browse/HIVE-7178
>             Project: Hive
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 0.13.0
>            Reporter: Yibing Shi
>
> The following SQL doesn't work: 
> {code}
> EXPLAIN 
> SELECT alias.a, alias.b, alias.c, COUNT(DISTINCT d) 
> FROM table_name alias 
> GROUP BY alias.a, alias.b, alias.c 
> GROUPING SETS( (alias.a), (alias.b, alias.a) ); 
> FAILED: ParseException line 15:34 missing ) at ',' near '<EOF>' 
> line 16:0 extraneous input ')' expecting EOF near '<EOF>' 
> {code}
> The following SQL works (without alias in grouping set): 
> {code}
> EXPLAIN 
> SELECT a, b, c, COUNT(DISTINCT d) 
> FROM table_name 
> GROUP BY a, b, c 
> GROUPING SETS( (a), (b, a) ); 
> {code}
> Alias works for just one column: 
> {code}
> EXPLAIN 
> SELECT alias.a, alias.b, alias.c, COUNT(DISTINCT d) 
> FROM table_name alias 
> GROUP BY alias.a, alias.b, alias.c 
> GROUPING SETS( (alias.a) ); 
> {code}
> Using alias in GROUPING SETS could be very useful if multiple tables are involved in
the SELECT (via JOIN)



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