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https://issues.apache.org/jira/browse/ASTERIXDB-1847?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15931420#comment-15931420
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Michael J. Carey commented on ASTERIXDB-1847:
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PS: Note that I suggested (by example, forgot to say it) putting the offending
identifier in escape quotes, too. I think that would help, as in this
particular case, it might not be clear if name is the concept of a name or the
string name of an actual identifier.
> Confusing ambiguous alias error message
> ---------------------------------------
>
> Key: ASTERIXDB-1847
> URL: https://issues.apache.org/jira/browse/ASTERIXDB-1847
> Project: Apache AsterixDB
> Issue Type: Bug
> Reporter: Michael J. Carey
> Assignee: Yingyi Bu
> Attachments: HW8_DataInit.txt, HW8_TableInit.txt
>
>
> This query, when run on the attached data:
> USE TopicalBird;
> SELECT btag, about FROM Chirps WHERE about IN
> (SELECT Topics.tid FROM Topics WHERE name = 'Kindle' OR name = 'Surface') ;
> Yields this error msg:
> Cannot resolve ambiguous alias reference for undefined identifier name
> [AlgebricksException]
> It's not obvious to naive users (or me :-)) why this is an ambiguous
> reference. Could we improve this error msg somehow? This may be a fairly
> typical error pattern for SQL --> SQL++ users -- i.e., they are used to SQL's
> unqualified column-naming permissiveness, and will carry those habits into
> NoSQL-land and then be perplexed at times.
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