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https://issues.apache.org/jira/browse/DERBY-2352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12543307
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Bryan Pendleton commented on DERBY-2352:
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Perhaps there are no longer any code paths which lead to SQLChar.trim,
but instead the code always goes to SQLChar.ansiTrim.
I'll try looking at code coverage results to see if they indicate that trim()
is ever called.
> Assertion Failure with order by and group by expression
> -------------------------------------------------------
>
> Key: DERBY-2352
> URL: https://issues.apache.org/jira/browse/DERBY-2352
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.2.2.0, 10.3.1.4
> Environment: Any
> Reporter: Yip Ng
> Assignee: Bryan Pendleton
> Attachments: substringReturnsChar.diff
>
>
> Assertion failure with order by expression:
> ij> select substr('abc', 1) from t1 order by substr('abc', 1);
> ERROR XJ001: Java exception: 'ASSERT FAILED col1.getClass() (class
> org.apache.derby.iapi.types.SQLVarchar) expected to be the same as
> col2.getClass() (class org.apache.derby.iapi.types.SQLChar):
> org.apache.derby.shared.common.sanity.AssertFailure'.
> Stacktrace:
> org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED
> col1.getClass() (class org.apache.derby.iapi.types.SQLVarchar) expected to be
> the same as col2.getClass() (class org.apache.derby.iapi.types.SQLChar)
> at
> org.apache.derby.shared.common.sanity.SanityManager.THROWASSERT(SanityManager.java:149)
> at
> org.apache.derby.impl.store.access.sort.MergeSort.checkColumnTypes(MergeSort.java:472)
> at
> org.apache.derby.impl.store.access.sort.MergeInserter.insert(MergeInserter.java:106)
> at
> org.apache.derby.impl.sql.execute.SortResultSet.loadSorter(SortResultSet.java:318)
> at
> org.apache.derby.impl.sql.execute.SortResultSet.openCore(SortResultSet.java:269)
> at
> org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(ProjectRestrictResultSet.java:169)
> at
> org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(BasicNoPutResultSetImpl.java:260)
> at
> org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:358)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1182)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:585)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:517)
> at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:321)
> at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:517)
> at
> org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:370)
> at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:268)
> at org.apache.derby.impl.tools.ij.Main.go(Main.java:204)
> at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:170)
> at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:56)
> at org.apache.derby.tools.ij.main(ij.java:71)
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