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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