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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4450) GROUP BY in an IN-subquery inside HAVING clause whose select list is subset of group by columns, gives NPE
Date Wed, 18 Nov 2009 23:55:39 GMT
GROUP BY in an IN-subquery inside HAVING clause whose select list is subset of group by columns,
gives NPE
----------------------------------------------------------------------------------------------------------

                 Key: DERBY-4450
                 URL: https://issues.apache.org/jira/browse/DERBY-4450
             Project: Derby
          Issue Type: Bug
          Components: SQL
            Reporter: Dag H. Wanvik


Found this while working on DERBY-4397 for a similar case with ORDER BY inside an IN-subquery:

Repro:

create table t(i int not null, constraint c unique (i), j int, k int);
insert into t values (1,10,1),(2,40,1),(3,45,1),(4,46,1),(5,90,1);
select sum(j) from t group by i having i in (select i from t group by i,j );

gives NPE:
ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
	at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:95)
	at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
	at org.apache.derby.impl.jdbc.Util.javaException(Util.java:244)
	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:403)
	at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:398)
	at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:346)
	at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2201)
	at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:81)
	at org.apache.derby.impl.jdbc.EmbedResultSet.closeOnTransactionError(EmbedResultSet.java:4338)
	at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(EmbedResultSet.java:467)
	at org.apache.derby.impl.jdbc.EmbedResultSet.next(EmbedResultSet.java:371)
	at org.apache.derby.tools.JDBCDisplayUtil.indent_DisplayResults(JDBCDisplayUtil.java:382)
	at org.apache.derby.tools.JDBCDisplayUtil.indent_DisplayResults(JDBCDisplayUtil.java:338)
	at org.apache.derby.tools.JDBCDisplayUtil.indent_DisplayResults(JDBCDisplayUtil.java:241)
	at org.apache.derby.tools.JDBCDisplayUtil.DisplayResults(JDBCDisplayUtil.java:229)
	at org.apache.derby.impl.tools.ij.utilMain.displayResult(utilMain.java:448)
	at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:522)
	at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:363)
	at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:261)
	at org.apache.derby.impl.tools.ij.Main.go(Main.java:229)
	at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184)
	at org.apache.derby.impl.tools.ij.Main.main(Main.java:75)
	at org.apache.derby.tools.ij.main(ij.java:59)
Caused by: java.sql.SQLException: Java exception: ': java.lang.NullPointerException'.
	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)
	... 22 more
Caused by: java.lang.NullPointerException
	at org.apache.derby.impl.sql.execute.BaseActivation.getColumnFromRow(BaseActivation.java:1451)
	at org.apache.derby.exe.acf81e0010x0125x09b5xf628x000003d4bf801.e5(Unknown Source)
	at org.apache.derby.impl.services.reflect.DirectCall.invoke(ReflectGeneratedClass.java:149)
	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.getNextRowCore(ProjectRestrictResultSet.java:268)
	at org.apache.derby.impl.sql.execute.AnyResultSet.getNextRowCore(AnyResultSet.java:171)
	at org.apache.derby.exe.acf81e0010x0125x09b5xf628x000003d4bf801.g0(Unknown Source)
	at org.apache.derby.exe.acf81e0010x0125x09b5xf628x000003d4bf801.e3(Unknown Source)
	at org.apache.derby.impl.services.reflect.DirectCall.invoke(ReflectGeneratedClass.java:145)
	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.getNextRowCore(ProjectRestrictResultSet.java:268)
	at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.getNextRow(BasicNoPutResultSetImpl.java:471)
	at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(EmbedResultSet.java:427)


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