[jira] [Created] (DERBY-6703) MERGE statement fails with NullPointerException if ON clause references non-existent column

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

Knut Anders Hatlen created DERBY-6703:
-----------------------------------------

             Summary: MERGE statement fails with NullPointerException if ON clause references non-existent column
                 Key: DERBY-6703
                 URL: https://issues.apache.org/jira/browse/DERBY-6703
             Project: Derby
          Issue Type: Bug
          Components: SQL
    Affects Versions: 10.11.1.1
            Reporter: Knut Anders Hatlen


{noformat}
ij> create table t1(x int);
0 rows inserted/updated/deleted
ij> create table t2(y int);
0 rows inserted/updated/deleted
ij> merge into t1 using t2 on z when matched then update set x=x+1;
ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
{noformat}

Stack trace with line numbers on trunk:

{noformat}
java.lang.NullPointerException
	at org.apache.derby.impl.sql.compile.MergeNode.addColumn(MergeNode.java:947)
	at org.apache.derby.impl.sql.compile.MergeNode.getColumnsFromList(MergeNode.java:930)
	at org.apache.derby.impl.sql.compile.MergeNode.getColumnsInExpression(MergeNode.java:314)
	at org.apache.derby.impl.sql.compile.MergeNode.buildSelectList(MergeNode.java:816)
	at org.apache.derby.impl.sql.compile.MergeNode.bindLeftJoin(MergeNode.java:579)
	at org.apache.derby.impl.sql.compile.MergeNode.bindStatement(MergeNode.java:396)
	at org.apache.derby.impl.sql.GenericStatement.prepMinion(GenericStatement.java:401)
	at org.apache.derby.impl.sql.GenericStatement.prepare(GenericStatement.java:99)
	at org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(GenericLanguageConnectionContext.java:1114)
	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:683)
	at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:631)
	at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:367)
	at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:529)
	at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:371)
	at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:247)
	at org.apache.derby.impl.tools.ij.Main.go(Main.java:229)
	at org.apache.derby.impl.tools.ij.Main.mainCore(Main.java:184)
	at org.apache.derby.impl.tools.ij.Main.main(Main.java:75)
	at org.apache.derby.tools.ij.main(ij.java:59)
	at org.apache.derby.iapi.tools.run.main(run.java:53)
{noformat}



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