[DERBY-4413] INSERT from SELECT DISTINCT gives assertFailure (sane), or NPE (insane) in presence of generated columns

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 10.5.1.1, 10.5.2.0, 10.5.3.0
• Fix Version/s: 10.5.3.1, 10.6.1.0
• Component/s: SQL
• Urgency: Normal
• Issue & fix info: Repro attached
• Assignee: Dag H. Wanvik
• Reporter: Dag H. Wanvik
• Created: 19/Oct/09 12:26
• Updated: 13/Jan/11 17:23
• Resolved: 06/Jul/10 18:51

Description

When a generated column is present in a table, an INSERT DISTINCT fail:
Repro:

create table t(i integer,
j integer not null generated always as (i*66));
insert into t values 1,2;
insert into t select distinct i from t;

In an insane build we see this assertFailure:

ij version 10.5
ij> connect 'jdbc:derby:wombat2;create=true';
ij> create table t(i integer,
j integer not null generated always as (i*66));
0 rows inserted/updated/deleted
ij> insert into t values 1,2;
2 rows inserted/updated/deleted
ij> insert into t select distinct i from t;
ERROR XJ001: Java exception: 'ASSERT FAILED col[1] is null: org.apache.derby.shared.common.sanity.AssertFailure'.
java.sql.SQLException: Java exception: 'ASSERT FAILED col[1] is null: org.apache.derby.shared.common.sanity.AssertFailure'.
at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:95)
at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
at org.apache.derby.impl.jdbc.Util.javaException(Util.java:244)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:403)
at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:346)
at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2201)
at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:81)
at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1323)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:625)
at org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:555)
at org.apache.derby.impl.tools.ij.ij.executeImmediate(ij.java:329)
at org.apache.derby.impl.tools.ij.utilMain.doCatch(utilMain.java:505)
at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(utilMain.java:347)
at org.apache.derby.impl.tools.ij.utilMain.go(utilMain.java:245)
at org.apache.derby.impl.tools.ij.Main.go(Main.java:217)
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)
Caused by: java.sql.SQLException: Java exception: 'ASSERT FAILED col[1] is null: 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)
... 18 more
Caused by: org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED col[1] is null
at org.apache.derby.shared.common.sanity.SanityManager.THROWASSERT(SanityManager.java:162)
at org.apache.derby.shared.common.sanity.SanityManager.THROWASSERT(SanityManager.java:147)
at org.apache.derby.impl.store.access.sort.MergeSort.checkColumnTypes(MergeSort.java:458)
at org.apache.derby.impl.store.access.sort.MergeInserter.insert(MergeInserter.java:98)
at org.apache.derby.impl.sql.execute.SortResultSet.loadSorter(SortResultSet.java:317)
at org.apache.derby.impl.sql.execute.SortResultSet.openCore(SortResultSet.java:268)
at org.apache.derby.impl.sql.execute.NormalizeResultSet.openCore(NormalizeResultSet.java:139)
at org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:415)
at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:416)
at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:297)
at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1235)
... 11 more

Issue Links

• is required by: DERBY-4728 10.5 backport effort tracking issue
• relates to: DERBY-4442 Evaluation of default value and identity in an INSERT result set evaluated too early.