[ http://issues.apache.org/jira/browse/DERBY-2014?page=all ]
Yip Ng updated DERBY-2014:
--------------------------
Attachment: derby2014-trunk-stat02.txt
derby2014-trunk-diff02.txt
Attaching patch derby2014-trunk-diff02.txt for DERBY-2014. This patch converts
all the tests in the previous patch into junit. Also the javadoc for
ValueNode.isEquivalent() method has been updated. Please review. (I hope the
javadoc is clear, if not, please let me know.)
> NullPointerException with NULLIF in GROUP BY clause
> ---------------------------------------------------
>
> Key: DERBY-2014
> URL: http://issues.apache.org/jira/browse/DERBY-2014
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.2.1.6, 10.3.0.0
> Environment: Any
> Reporter: Yip Ng
> Assigned To: Yip Ng
> Attachments: derby2014-trunk-diff01.txt, derby2014-trunk-diff02.txt,
> derby2014-trunk-stat01.txt, derby2014-trunk-stat02.txt
>
>
> A NPE occurs when NULLIF is used in the GROUP BY clause.
> ij> create table t1 (c1 int);
> 0 rows inserted/updated/deleted
> ij> insert into t1 values 1,2,2,3;
> 4 rows inserted/updated/deleted
> ij> select nullif(c1,c1) from t1 group by nullif(c1,c1);
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> Stacktrace:
> java.lang.NullPointerException
> at
> org.apache.derby.impl.sql.compile.ConstantNode.isEquivalent(ConstantNode.java:285)
> at
> org.apache.derby.impl.sql.compile.CastNode.isEquivalent(CastNode.java:1044)
> at
> org.apache.derby.impl.sql.compile.ConditionalNode.isEquivalent(ConditionalNode.java:518)
> at
> org.apache.derby.impl.sql.compile.GroupByList.findGroupingColumn(GroupByList.java:244)
> at
> org.apache.derby.impl.sql.compile.VerifyAggregateExpressionsVisitor.skipChildren(VerifyAggregateExpressionsVisitor.java:146)
> at
> org.apache.derby.impl.sql.compile.ConditionalNode.accept(ConditionalNode.java:484)
> at
> org.apache.derby.impl.sql.compile.ResultColumn.accept(ResultColumn.java:1515)
> at
> org.apache.derby.impl.sql.compile.QueryTreeNodeVector.accept(QueryTreeNodeVector.java:159)
> at
> org.apache.derby.impl.sql.compile.SelectNode.bindExpressions(SelectNode.java:619)
> at
> org.apache.derby.impl.sql.compile.FromSubquery.bindExpressions(FromSubquery.java:262)
> at
> org.apache.derby.impl.sql.compile.FromList.bindExpressions(FromList.java:337)
> at
> org.apache.derby.impl.sql.compile.SelectNode.bindExpressions(SelectNode.java:500)
> at
> org.apache.derby.impl.sql.compile.DMLStatementNode.bindExpressions(DMLStatementNode.java:249)
> at
> org.apache.derby.impl.sql.compile.DMLStatementNode.bind(DMLStatementNode.java:162)
> at
> org.apache.derby.impl.sql.compile.CursorNode.bind(CursorNode.java:253)
> at
> org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:345)
> at
> org.apache.derby.impl.sql.GenericStatement.prepare(GenericStatement.java:119)
> at
> org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(GenericLanguageConnectionContext.java:745)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:568)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:517)
> at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:321)
> at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:517)
> at
> org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:370)
> at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:268)
> at org.apache.derby.impl.tools.ij.Main.go(Main.java:204)
> at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:170)
> at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:56)
> at org.apache.derby.tools.ij.main(ij.java:71)
> sysinfo:
> ------------------ Java Information ------------------
> Java Version: 1.4.2_12
> Java Vendor: Sun Microsystems Inc.
> Java home: C:\jdk142\jre
> Java classpath: classes;.
> OS name: Windows XP
> OS architecture: x86
> OS version: 5.1
> Java user name: yip
> Java user home: C:\Documents and Settings\Administrator
> Java user dir: C:\derby\trunk
> java.specification.name: Java Platform API Specification
> java.specification.version: 1.4
> --------- Derby Information --------
> JRE - JDBC: J2SE 1.4.2 - JDBC 3.0
> [C:\derby\trunk\classes] 10.3.0.0 alpha - (1)
> ------------------------------------------------------
> ----------------- Locale Information -----------------
> Current Locale : [English/United States [en_US]]
> Found support for locale: [de_DE]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [es]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [fr]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [it]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [ja_JP]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [ko_KR]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [pt_BR]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [zh_CN]
> version: 10.3.0.0 alpha - (1)
> Found support for locale: [zh_TW]
> version: 10.3.0.0 alpha - (1)
> ------------------------------------------------------
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