[OASIS Issue Tracker] Created: (CMIS-515) ORDER BY should allowqualified column names

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

ORDER BY should allow qualified column names
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                 Key: CMIS-515
                 URL: http://tools.oasis-open.org/issues/browse/CMIS-515
             Project: OASIS Content Management Interoperability Services (CMIS) TC
          Issue Type: Bug
          Components: Domain Model
    Affects Versions: Draft 0.62
            Reporter: Florent Guillaume
            Assignee: Ethan Gur-esh
            Priority: Minor


The BNF for a query has:
  <sort specification> ::= <column name> [ ASC | DESC ] 

However if we want to allow queries with JOINs to order their results, like:
  SELECT B.cmis:ObjectId, B.dc:title FROM cmis:Document A JOIN cmis:Document B ON A.cmis:ObjectId = B.my:field WHERE A.dc:description = 'foo' ORDER BY B.dc:title

Then we have to use a BNF like:
  <sort specification> ::= <column reference> [ ASC | DESC ] 

Note: In this BNF statement, SQL-92 has <column name>, but SQL 2008 actually has a very generic <value expression> instead. I think <column reference> is sufficient for CMIS.

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