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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-4772) Data truncation error with XPLAIN-functionality enabled
Date Tue, 02 Nov 2010 14:22:25 GMT

     [ https://issues.apache.org/jira/browse/DERBY-4772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kristian Waagan updated DERBY-4772:
-----------------------------------

    Attachment: derby-4772-1b-increase_max_len.diff

Attaching patch 1b.
It replaces CHAR with VARCHAR where there is no hard limit defined on the maximum length of
the value, and it uses the maximum allowed length for the VARCHAR type.

It would be nice if someone with more knowledge in this area of the code could have a quick
look and say if any of the changes should be discarded, because the value in question actually
has a defined/known maximum length.
This patch should also address the second error mentioned in DERBY-4673.

Patch ready for review.

> Data truncation error with XPLAIN-functionality enabled
> -------------------------------------------------------
>
>                 Key: DERBY-4772
>                 URL: https://issues.apache.org/jira/browse/DERBY-4772
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.6.2.1, 10.7.1.0
>            Reporter: Kristian Waagan
>            Assignee: Kristian Waagan
>         Attachments: derby-4772-1a-increase_max_len.diff, derby-4772-1b-increase_max_len.diff
>
>
> When running a modified version of lang.OrderByAndSortAvoidance I get the following error:
> java.sql.SQLDataException: A truncation error was encountered trying to shrink CHAR 'Thread[DRDAConnThread_3,5,derby.daemons]'
to length 32.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:79)
> 	at org.apache.derby.impl.jdbc.Util.generateCsSQLException(Util.java:256)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:391)
> 	at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:346)
> 	at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2269)
> 	at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:81)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1321)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeStatement(EmbedPreparedStatement.java:1673)
> 	at org.apache.derby.impl.jdbc.EmbedPreparedStatement.executeUpdate(EmbedPreparedStatement.java:303)
> 	at org.apache.derby.impl.sql.execute.xplain.XPLAINSystemTableVisitor.addStmtDescriptorsToSystemCatalog(XPLAINSystemTableVisitor.java:390)
> 	at org.apache.derby.impl.sql.execute.xplain.XPLAINSystemTableVisitor.doXPLAIN(XPLAINSystemTableVisitor.java:317)
> 	at org.apache.derby.impl.sql.execute.NoPutResultSetImpl.close(NoPutResultSetImpl.java:179)
> 	at org.apache.derby.impl.sql.execute.SortResultSet.close(SortResultSet.java:467)
> 	at org.apache.derby.impl.jdbc.EmbedResultSet.close(EmbedResultSet.java:575)
> 	at org.apache.derby.impl.drda.DRDAResultSet.close(DRDAResultSet.java:338)
> 	at org.apache.derby.impl.drda.DRDAStatement.rsClose(DRDAStatement.java:995)
> 	at org.apache.derby.impl.drda.DRDAConnThread.doneData(DRDAConnThread.java:7446)
> 	at org.apache.derby.impl.drda.DRDAConnThread.writeFDODTA(DRDAConnThread.java:7026)
> 	at org.apache.derby.impl.drda.DRDAConnThread.writeQRYDTA(DRDAConnThread.java:6910)
> 	at org.apache.derby.impl.drda.DRDAConnThread.processCommands(DRDAConnThread.java:870)
> 	at org.apache.derby.impl.drda.DRDAConnThread.run(DRDAConnThread.java:294)
> Caused by: java.sql.SQLException: A truncation error was encountered trying to shrink
CHAR 'Thread[DRDAConnThread_3,5,derby.daemons]' to length 32.
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:45)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory40.java:119)
> 	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:70)
> 	... 20 more
> Caused by: ERROR 22001: A truncation error was encountered trying to shrink CHAR 'Thread[DRDAConnThread_3,5,derby.daemons]'
to length 32.
> 	at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:343)
> 	at org.apache.derby.iapi.types.SQLChar.hasNonBlankChars(SQLChar.java:1767)
> 	at org.apache.derby.iapi.types.SQLChar.normalize(SQLChar.java:1743)
> 	at org.apache.derby.iapi.types.SQLChar.normalize(SQLChar.java:1695)
> 	at org.apache.derby.iapi.types.DataTypeDescriptor.normalize(DataTypeDescriptor.java:648)
> 	at org.apache.derby.impl.sql.execute.NormalizeResultSet.normalizeColumn(NormalizeResultSet.java:329)
> 	at org.apache.derby.impl.sql.execute.NormalizeResultSet.normalizeRow(NormalizeResultSet.java:373)
> 	at org.apache.derby.impl.sql.execute.NormalizeResultSet.getNextRowCore(NormalizeResultSet.java:188)
> 	at org.apache.derby.impl.sql.execute.DMLWriteResultSet.getNextRowCore(DMLWriteResultSet.java:127)
> 	at org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:504)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:436)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:317)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1232)
> 	... 14 more
> I suspect the error can be triggered easily in client/server, but for convenience I'll
attach the patch for the test where I see the issue.

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