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From "Maryann Xue (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PHOENIX-1696) Selecting column more than once fails
Date Wed, 04 Mar 2015 04:26:04 GMT

    [ https://issues.apache.org/jira/browse/PHOENIX-1696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14346373#comment-14346373
] 

Maryann Xue commented on PHOENIX-1696:
--------------------------------------

Yes, [~jamestaylor], in single table select, I think this is the case. My intention is report
error ambiguous column reference in join queries. For example, select * from A join B on A.id
= B.id, and if user calls rs.getString("id").

> Selecting column more than once fails
> -------------------------------------
>
>                 Key: PHOENIX-1696
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-1696
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0, 4.3
>            Reporter: Samarth Jain
>            Assignee: Maryann Xue
>
> {code}
> ResultSet rs = conn.createStatement().executeQuery("SELECT undoub, undoub FROM t1");
> assertTrue(rs.next());
> System.out.println(rs.getObject("undoub"));
> Stacktrace:
>  
> org.apache.phoenix.schema.AmbiguousColumnException: ERROR 502 (42702): Column reference
ambiguous or duplicate names. columnName=UNDOUB
> 	at org.apache.phoenix.compile.RowProjector.getColumnIndex(RowProjector.java:143)
> 	at org.apache.phoenix.jdbc.PhoenixResultSet.findColumn(PhoenixResultSet.java:167)
> 	at org.apache.phoenix.jdbc.PhoenixResultSet.getObject(PhoenixResultSet.java:513)
> {code}
> [~maryannxue] - do you mind taking a look? I verified that this issue started happening
since this checkin: https://github.com/apache/phoenix/commit/b2b5788d9dd96dc5fa2f0ac0d0b2a792d9bb26b2



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