[jira] Resolved: (DERBY-3175) NullPointerException on INSERT after ALTER TABLE ... DROP COLUMN

["Bryan Pendleton (JIRA)" <ji...@apache.org>]

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

Bryan Pendleton resolved DERBY-3175.
------------------------------------

       Resolution: Fixed
    Fix Version/s: 10.4.0.0
                   10.3.1.5
       Derby Info:   (was: [Patch Available])

No issues appear to have arisen with this change on the trunk in the last 48 hours,
and my merge and build/test results with 10.3 were very clean, so I've committed
the merged patch to the 10.3 branch as subversion revision 595408.

I'm a bit concerned about DERBY-3177. I thought the two issues were the same,
but Charlie reported that the DERBY-3175 changes didn't improve his results
with DERBY-3177. Perhaps I was premature to link the issues as duplicates.

I believe this issue is resolved, though. Thanks again to everyone for the help!


> 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
>             Fix For: 10.3.1.5, 10.4.0.0
>
>         Attachments: bug.sql, d3175_codeChangeOnly.diff, fixWith3177Case.diff, fixWithTest.diff, merge10_3.diff, preserveAutoincValue.diff, preserveFixWithComments.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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