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  1. Derby
  2. DERBY-4450

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

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Details

    • Bug
    • Status: Closed
    • Major
    • Resolution: Fixed
    • 10.3.1.4, 10.3.2.1, 10.3.3.0, 10.4.1.3, 10.4.2.0, 10.5.1.1, 10.5.2.0, 10.5.3.0
    • 10.3.3.1, 10.4.2.1, 10.5.3.1, 10.6.1.0
    • SQL
    • None
    • Repro attached
    • Regression

    Description

      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 , 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)

      Attachments

        1. derby-4450.diff
          1 kB
          Dag H. Wanvik
        2. derby-4450b.diff
          3 kB
          Dag H. Wanvik
        3. derby-4450b.stat
          0.2 kB
          Dag H. Wanvik

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            dagw Dag H. Wanvik
            dagw Dag H. Wanvik
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              Created:
              Updated:
              Resolved:

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