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From "A B (JIRA)" <j...@apache.org>
Subject [jira] Commented: (DERBY-1644) NPE when inserting values to a table that has a column declared as generated by default as identity
Date Tue, 14 Nov 2006 16:59:40 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1644?page=comments#action_12449704 ] 
            
A B commented on DERBY-1644:
----------------------------

I was running the above queries for kicks to see if I could reproduce the problem--but they
all succeeded.  I then realized that my test table "t1" only had *one* column--the "generated
by default" column c2.  When I recreated the table so that it had two columns (c1 and c2 as
posted in the repro) the NPE occurs.

So the bug appears to require that there be at least one non-identity column in the table,
as well.  Maybe that's useful, maybe not...

> NPE when inserting values to a table that has a column declared as generated by default
as identity
> ---------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-1644
>                 URL: http://issues.apache.org/jira/browse/DERBY-1644
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.2.1.6
>         Environment: Sun JDK 1.4.2
>            Reporter: Yip Ng
>         Assigned To: Bryan Pendleton
>            Priority: Minor
>
> The following scenario triggers a NullPointerException in statement compilation:
> ij> create table t1 (c1 int, c2 int generated by default as identity);
> 0 rows inserted/updated/deleted
> ij> insert into t1 (c2) values default, 10;
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> Stacktrace from derby.log:
> Database Class Loader started - derby.database.classpath=''
> 2006-08-04 06:31:17.235 GMT Thread[main,5,main] (XID = 235), (SESSIONID = 0), (DATABASE
= wombat), (DRDAID = null), Cleanup action starting
> 2006-08-04 06:31:17.235 GMT Thread[main,5,main] (XID = 235), (SESSIONID = 0), (DATABASE
= wombat), (DRDAID = null), Failed Statement is: insert into t1 (c2) values default, 10
> java.lang.NullPointerException
> 	at org.apache.derby.impl.sql.compile.ResultColumnList.generateCore(ResultColumnList.java:1033)
> 	at org.apache.derby.impl.sql.compile.ResultColumnList.generate(ResultColumnList.java:893)
> 	at org.apache.derby.impl.sql.compile.RowResultSetNode.generate(RowResultSetNode.java:690)
> 	at org.apache.derby.impl.sql.compile.UnionNode.generate(UnionNode.java:589)
> 	at org.apache.derby.impl.sql.compile.ProjectRestrictNode.generateMinion(ProjectRestrictNode.java:1424)
> 	at org.apache.derby.impl.sql.compile.ProjectRestrictNode.generate(ProjectRestrictNode.java:1286)
> 	at org.apache.derby.impl.sql.compile.NormalizeResultSetNode.generate(NormalizeResultSetNode.java:122)
> 	at org.apache.derby.impl.sql.compile.InsertNode.generate(InsertNode.java:764)
> 	at org.apache.derby.impl.sql.compile.StatementNode.generate(StatementNode.java:232)
> 	at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:477)
> 	at org.apache.derby.impl.sql.GenericStatement.prepare(GenericStatement.java:118)
> 	at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(GenericLanguageConnectionContext.java:713)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:567)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:516)
> 	at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:313)
> 	at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:478)
> 	at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:347)
> 	at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:248)
> 	at org.apache.derby.impl.tools.ij.Main.go(Main.java:203)
> 	at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:169)
> 	at org.apache.derby.impl.tools.ij.Main14.main(Main14.java:55)
> 	at org.apache.derby.tools.ij.main(ij.java:69)
> 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] 10.2.0.5 alpha - (1)
> ------------------------------------------------------
> ----------------- Locale Information -----------------
> Current Locale :  [English/United States [en_US]]
> Found support for locale: [de_DE]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [es]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [fr]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [it]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [ja_JP]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [ko_KR]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [pt_BR]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [zh_CN]
>          version: 10.2.0.5 alpha - (1)
> Found support for locale: [zh_TW]
>          version: 10.2.0.5 alpha - (1)
> ------------------------------------------------------

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