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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-2352) Assertion Failure with order by and group by expression
Date Sat, 17 Nov 2007 21:14:43 GMT

    [ https://issues.apache.org/jira/browse/DERBY-2352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12543312
] 

Bryan Pendleton commented on DERBY-2352:
----------------------------------------

According to fairly recent code coverage results, trim() is not called at all:
http://people.apache.org/~fuzzylogic/codecoverage/579033/_files/181.html#69

Also, I commented out the trim() method in SQLChar and in StringDataValue and
I got no compilation errors in the rest of the system, so perhaps SQLChar.trim
can be entirely removed. I'll log that as a separate JIRA for some future consideration.

In the meantime, I think I can proceed with putting together some test cases and
making a complete patch proposal out of the already-proposed code change.

> 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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