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https://issues.apache.org/jira/browse/DERBY-6563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14171210#comment-14171210
]
Myrna van Lunteren commented on DERBY-6563:
-------------------------------------------
There is an additional failure with IBM's j2ME implementation:
1)
testParameters(org.apache.derbyTesting.functionTests.tests.lang.CaseExpressionTest)java.lang.NoSuchMethodError:
java/sql/PreparedStatement.getParameterMetaData()Ljava/sql/ParameterMetaData;
at
org.apache.derbyTesting.functionTests.tests.lang.CaseExpressionTest.testParameters(CaseExpressionTest.java:518)
at java.lang.reflect.AccessibleObject.invokeV(AccessibleObject.java:195)
at
org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:119)
at
org.apache.derbyTesting.junit.BaseJDBCTestCase.runBareOverridable(BaseJDBCTestCase.java:442)
at
org.apache.derbyTesting.junit.BaseJDBCTestCase.runBare(BaseJDBCTestCase.java:459)
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)
(see:
http://people.apache.org/~myrnavl/derby_test_results/v10_10/windows/testlog/weme6.2/1631607-suites.All_diff.txt.
The other failures are the result of backport attempt for DERBY-6629).
> NOT elimination for CASE expressions is broken
> ----------------------------------------------
>
> Key: DERBY-6563
> URL: https://issues.apache.org/jira/browse/DERBY-6563
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.10.2.0
> Reporter: Knut Anders Hatlen
> Assignee: Mike Matrigali
> Fix For: 10.11.1.1
>
> Attachments: d6563-1a.diff
>
>
> NOT elimination for CASE expressions seems to be broken. Take this example:
> {noformat}
> ij> select * from sysibm.sysdummy1 where not ( case when ibmreqd = 'Y' then
> true else true end );
> IBM&
> ----
> Y
> 1 row selected
> {noformat}
> Both branches of the CASE expression evaluate to TRUE, so one would expect
> the predicate "not ( case ... )" to evaluate to FALSE, and the query should
> return an empty result.
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