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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6693) Assert failure/ArrayIndexOutOfBoundsException when using COUNT in MERGE matching clause
Date Thu, 07 Aug 2014 16:18:12 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14089389#comment-14089389
] 

ASF subversion and git services commented on DERBY-6693:
--------------------------------------------------------

Commit 1616523 from [~dagw] in branch 'code/trunk'
[ https://svn.apache.org/r1616523 ]

DERBY-6693 Assert failure/ArrayIndexOutOfBoundsException when using COUNT in MERGE matching
clause

Patch derby-6693 which forbids aggregates in the matching clauses, and
adds a test case to MergeStatementTest, but:
the checked in code using assertCompileError instead of
assertStatementError for more precision (in MergeStatementTest).

> Assert failure/ArrayIndexOutOfBoundsException when using COUNT in MERGE matching clause
> ---------------------------------------------------------------------------------------
>
>                 Key: DERBY-6693
>                 URL: https://issues.apache.org/jira/browse/DERBY-6693
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.10.2.0
>            Reporter: Dag H. Wanvik
>            Priority: Minor
>         Attachments: derby-6693.diff, derby-6693.status
>
>
> This (meaningless) statement gives NPE in insane builds and
> assert failure in sane builds:
> {code}
> s.execute("create table t2(x int)");
> s.execute("create table t1(x int)");
> s.execute("insert into t2 values 3,4");
> s.executeUpdate("merge into t1 using t2 on (t1.x=t2.x) " + 
>    "when not matched then insert values (count(*))");
> {code}
> I see it also applies to other aggregates, e.g. MAX.
> stack trace (insane):
> {code}
> Exception in thread "main" java.sql.SQLException: Java exception: '-1: java.lang.ArrayIndexOutOfBoundsException'.
>         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.executeLargeUpdate(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeUpdate(Unknown Source)
>         at derby6565.Derby6565.main(Derby6565.java:46)
> Caused by: ERROR XJ001: Java exception: '-1: java.lang.ArrayIndexOutOfBoundsException'.
>         at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown
Source)
>         ... 12 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
>         at org.apache.derby.impl.services.bytecode.BCMethod.popStack(Unknown Source)
>         at org.apache.derby.impl.services.bytecode.BCMethod.callMethod(Unknown Source)
>         at org.apache.derby.impl.sql.compile.ResultColumnList.generateEvaluatedRow(Unknown
Source)
>         at org.apache.derby.impl.sql.compile.MatchingClauseNode.generateInsertUpdateRow(Unknown
Source)
>         at org.apache.derby.impl.sql.compile.MatchingClauseNode.generate(Unknown Source)
>         at org.apache.derby.impl.sql.compile.MergeNode.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)
>         ... 4 more
> {code}



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