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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4402) Assert failure (sane) or Array out of bounds error (insane) when attempting to GROUP BY accumulator function
Date Fri, 09 Oct 2009 00:02:31 GMT
Assert failure (sane) or Array out of bounds error (insane) when attempting to GROUP BY accumulator
function
------------------------------------------------------------------------------------------------------------

                 Key: DERBY-4402
                 URL: https://issues.apache.org/jira/browse/DERBY-4402
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.5.3.0
            Reporter: Dag H. Wanvik
            Priority: Minor


The error checking fails to catch this wrong usage (accumulator function sinde a group by
column expression
:
select sum(i) from t group by (4+sum(j))
:
java.sql.SQLException: Java exception: 'ASSERT FAILED Unexpected Aggregate vector generated
by Group By clause: org.apache.derby.shared.common.sanity.AssertFailure'.
	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)
	... 16 more
Caused by: org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED Unexpected Aggregate
vector generated by Group By clause
	at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:120)
	at org.apache.derby.impl.sql.compile.SelectNode.bindExpressions(SelectNode.java:648)
	at org.apache.derby.impl.sql.compile.DMLStatementNode.bindExpressions(DMLStatementNode.java:227)
	at org.apache.derby.impl.sql.compile.DMLStatementNode.bind(DMLStatementNode.java:140)
	at org.apache.derby.impl.sql.compile.CursorNode.bindStatement(CursorNode.java:249)
	at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:319)
	at org.apache.derby.impl.sql.GenericStatement.prepare(GenericStatement.java:88)
	at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(GenericLanguageConnectionContext.java:824)
	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:606)
	... 9 more

The parser has a check against the top node of a "groupingColumnReference" being an aggregator,
but fails to "see" inside an expression.
Maybe this check should be made by a visitor in the bind phase instead.


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