[DERBY-4450] GROUP BY in an IN-subquery inside HAVING clause whose select list is subset of group by columns, gives NPE

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 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
• Fix Version/s: 10.3.3.1, 10.4.2.1, 10.5.3.1, 10.6.1.0
• Component/s: SQL
• Issue & fix info: Repro attached
• Bug behavior facts: Regression
• Assignee: Dag H. Wanvik
• Reporter: Dag H. Wanvik
• Created: 18/Nov/09 23:55
• Updated: 05/Jul/10 17:07
• Resolved: 21/Nov/09 18:55

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)

Issue Links

• is related to: DERBY-681 Eliminate the parser's rewriting of the abstract syntax tree for queries with GROUP BY and/or HAVING clauses