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From "Sylvain Lebresne (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CASSANDRA-4645) (CQL3) Re-allow order by on non-selected columns
Date Tue, 11 Sep 2012 15:09:07 GMT
Sylvain Lebresne created CASSANDRA-4645:
-------------------------------------------

             Summary: (CQL3) Re-allow order by on non-selected columns
                 Key: CASSANDRA-4645
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-4645
             Project: Cassandra
          Issue Type: Bug
    Affects Versions: 1.2.0 beta 1
            Reporter: Sylvain Lebresne
            Priority: Minor
             Fix For: 1.2.0


CASSANDRA-4612 added a limitation to ORDER BY query in that it requires the columns part of
the ORDER BY to be in the select clause, while this wasn't the case previously.

The reason for that is that for ORDER BY with IN queries, the sorting is done post-query,
and by the time we do the ordering, we've already cut down the result set to the select clause,
so if the column are not in the select clause we cannot sort on them.

We should remove that that limitation however as this is a regression from what we had before.
As far as 1.2.0 is concerned, at the very least we should lift the limitation for EQ queries
since we don't do any post-query sorting in that case and that was working correctly pre-CASSANDRA-4612.
But we should also remove that limitation for IN query, even if it's in a second time.

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