GROUP BY in an IN-subquery inside HAVING clause whose select list is subset of
group by columns, gives NPE
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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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