Dag H. Wanvik created DERBY-6688:
------------------------------------
Summary: NPE (or sane: ASSERT failure) with ROW_NUMBER in some
subqueries
Key: DERBY-6688
URL: https://issues.apache.org/jira/browse/DERBY-6688
Project: Derby
Issue Type: Bug
Components: SQL
Reporter: Dag H. Wanvik
This subquery usage works:
{code}
select * from (select x from t order by row_number() over () fetch first 1 row
only) tt;
{code}
but this one leads to NPE in insane mode, or a Sanity ASSERT failure in sane
mode:
{code}
Exception in thread "main" java.sql.SQLException: Java exception: ':
java.lang.NullPointerException'.
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown Source)
at org.apache.derby.impl.jdbc.Util.seeNextException(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 derby6565.Derby6565.main(Derby6565.java:33)
Caused by: ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
at org.apache.derby.iapi.error.StandardException.newException(Unknown
Source)
at
org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown
Source)
... 11 more
Caused by: java.lang.NullPointerException
at
org.apache.derby.impl.sql.compile.UnaryOperatorNode.getReceiverInterfaceName(Unknown
Source)
at
org.apache.derby.impl.sql.compile.UnaryOperatorNode.generateExpression(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ResultColumn.generateExpression(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ResultColumnList.generateEvaluatedRow(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ResultColumnList.generateCore(Unknown Source)
at
org.apache.derby.impl.sql.compile.ProjectRestrictNode.generateMinion(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ProjectRestrictNode.generate(Unknown Source)
at org.apache.derby.impl.sql.compile.OrderByList.generate(Unknown
Source)
at org.apache.derby.impl.sql.compile.OrderByNode.generate(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ProjectRestrictNode.generateMinion(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ProjectRestrictNode.generate(Unknown Source)
at org.apache.derby.impl.sql.compile.RowCountNode.generate(Unknown
Source)
at
org.apache.derby.impl.sql.compile.SubqueryNode.generateExpression(Unknown
Source)
at
org.apache.derby.impl.sql.compile.BinaryOperatorNode.generateExpression(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ResultColumn.generateExpression(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ResultColumnList.generateEvaluatedRow(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ResultColumnList.generateCore(Unknown Source)
at
org.apache.derby.impl.sql.compile.ProjectRestrictNode.generateMinion(Unknown
Source)
at
org.apache.derby.impl.sql.compile.ProjectRestrictNode.generate(Unknown Source)
at org.apache.derby.impl.sql.compile.UpdateNode.generate(Unknown Source)
at org.apache.derby.impl.sql.compile.StatementNode.generate(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)
... 3 more
{code}
The immediate problem is that the field *#operand* is null.
--
This message was sent by Atlassian JIRA
(v6.2#6252)
