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https://issues.apache.org/jira/browse/DERBY-4371?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12861651#action_12861651
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C.S. Nirmal J. Fernando commented on DERBY-4371:
------------------------------------------------
Hi Bryan,
I ran Junit tests for the new modification and there's a failure. Following is
the output in JunitAll.out:
orderby(org.apache.derbyTesting.functionTests.tests.lang.LangScripts)junit.framework.ComparisonFailure:
Output at line 1736 expected:<[C1 |C2 ]> but was:<[ERROR 42879: The ORDER BY
clause may not contain column 'expression', since the query specifies DISTINCT
and that column does not appear in the query result.]>
at
org.apache.derbyTesting.functionTests.util.CanonTestCase.compareCanon(CanonTestCase.java:106)
at
org.apache.derbyTesting.functionTests.util.ScriptTestCase.runTest(ScriptTestCase.java:198)
at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:109)
at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
at junit.extensions.TestSetup.run(TestSetup.java:25)
at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
Where can I found the query related to this ?
Thanks.
> Non-selected columns for SELECT DISTINCT allowed in ORDER BY clause if
> ordered by expression
> --------------------------------------------------------------------------------------------
>
> Key: DERBY-4371
> URL: https://issues.apache.org/jira/browse/DERBY-4371
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.5.1.1
> Reporter: Bernt M. Johnsen
> Assignee: C.S. Nirmal J. Fernando
> Priority: Critical
> Attachments: DERBY-4371-2.diff, DERBY-4371.diff
>
>
> How to repeat:
> ij> create table t (i integer, j integer);;
> 0 rows inserted/updated/deleted
> ij> insert into t values (1,2),(1,3);
> 2 rows inserted/updated/deleted
> ij> select distinct i from t order by j;
> ERROR 42879: The ORDER BY clause may not contain column 'J', since the query
> specifies DISTINCT and that column does not appear in the query result.
> ij> select distinct i from t order by j*2;
> I
> -----------
> 1
> 1
> 2 rows selected
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