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From "Yip Ng (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-2351) ORDER BY with expression with distinct in the select list returns incorrect result
Date Sat, 17 Feb 2007 00:38:05 GMT
ORDER BY with expression with distinct in the select list returns incorrect result
----------------------------------------------------------------------------------

                 Key: DERBY-2351
                 URL: https://issues.apache.org/jira/browse/DERBY-2351
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.2.2.0, 10.3.0.0
         Environment: Any
            Reporter: Yip Ng


When distinct is in the select list and the query has order by with expression, the resultset
produced contains an additional column.  

ij> create table t1 (c1 int, c2 varchar(10))
0 rows inserted/updated/deleted
ij> insert into t1 values (1,'a'),(2,'b'),(3,'c');
3 rows inserted/updated/deleted
select distinct c1, c2 from t1 order by c1;
C1         |C2
----------------------
1          |a
2          |b
3          |c

3 rows selected
ij> select distinct c1, c2 from t1 order by c1+1;
C1         |C2        |3                                 <=====returns 3 columns, incorrect
result returned, should have thrown an error
----------------------------------
1          |a         |2
2          |b         |3
3          |c         |4

3 rows selected


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