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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3175) NullPointerException on INSERT after ALTER TABLE ... DROP COLUMN
Date Thu, 08 Nov 2007 04:31:50 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bryan Pendleton updated DERBY-3175:
-----------------------------------

    Attachment: fixWith3177Case.diff

Attached is "fixWith3177Case.diff", a patch proposal.

I believe that this patch proposal is ready for review, and I
believe that it will resolve both DERBY-3175 and DERBY-3177.

Please have a look at the patch and let us know your comments.


> NullPointerException on INSERT after ALTER TABLE ... DROP COLUMN
> ----------------------------------------------------------------
>
>                 Key: DERBY-3175
>                 URL: https://issues.apache.org/jira/browse/DERBY-3175
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.1.4, 10.4.0.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Bryan Pendleton
>         Attachments: bug.sql, d3175_codeChangeOnly.diff, fixWith3177Case.diff, fixWithTest.diff
>
>
> ij version 10.3
> ij> connect 'jdbc:derby:bugdb;create=true';
> ij> create table t (
>        x varchar(12),
>        y varchar(12),
>        id int primary key generated by default as identity
> );
> 0 rows inserted/updated/deleted
> ij> alter table t drop column y;
> 0 rows inserted/updated/deleted
> ij> insert into t(x) values 'a';
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(Unknown Source)
>         at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Unknown Source)
>         at org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
>         at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown
Source)
>         at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
Source)
>         at org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
>         at org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
>         at org.apache.derby.impl.tools.ij.ij.executeImmediate(Unknown Source)
>         at org.apache.derby.impl.tools.ij.utilMain.doCatch(Unknown Source)
>         at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(Unknown Source)
>         at org.apache.derby.impl.tools.ij.utilMain.go(Unknown Source)
>         at org.apache.derby.impl.tools.ij.Main.go(Unknown Source)
>         at org.apache.derby.impl.tools.ij.Main.mainCore(Unknown Source)
>         at org.apache.derby.impl.tools.ij.Main14.main(Unknown Source)
>         at org.apache.derby.tools.ij.main(Unknown Source)
>         at org.apache.derby.iapi.tools.run.main(Unknown Source)
> Caused by: java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(Unknown
Source)
>         ... 18 more
> Caused by: java.lang.NullPointerException
>         at org.apache.derby.impl.sql.compile.ResultColumn.columnTypeAndLengthMatch(Unknown
Source)
>         at org.apache.derby.impl.sql.compile.ResultColumnList.columnTypesAndLengthsMatch(Unknown
Source)
>         at org.apache.derby.impl.sql.compile.InsertNode.bindStatement(Unknown Source)
>         at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source)
>         at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source)
>         at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown
Source)
>         ... 11 more

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