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https://issues.apache.org/jira/browse/DERBY-2352?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12533945
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Bryan Pendleton commented on DERBY-2352:
----------------------------------------
Ah. For this to reproduce, table "t" must contain at least one row:
ij> insert into d2352 values (1), (2), (3);
3 rows inserted/updated/deleted
ij> select substr('abc', 1) from d2352 order by substr('abc', 1);
ERROR XJ001: Java exception: 'ASSERT FAILED col1.getClass() (class org.apache.de
rby.iapi.types.SQLVarchar) expected to be the same as col2.getClass() (class org
.apache.derby.iapi.types.SQLChar): org.apache.derby.shared.common.sanity.AssertF
ailure'.
> Assertion Failure with order by and group by expression
> -------------------------------------------------------
>
> Key: DERBY-2352
> URL: https://issues.apache.org/jira/browse/DERBY-2352
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.2.2.0, 10.3.1.4
> Environment: Any
> Reporter: Yip Ng
> Assignee: Bryan Pendleton
>
> Assertion failure with order by expression:
> ij> select substr('abc', 1) from t1 order by substr('abc', 1);
> ERROR XJ001: Java exception: 'ASSERT FAILED col1.getClass() (class
> org.apache.derby.iapi.types.SQLVarchar) expected to be the same as
> col2.getClass() (class org.apache.derby.iapi.types.SQLChar):
> org.apache.derby.shared.common.sanity.AssertFailure'.
> Stacktrace:
> org.apache.derby.shared.common.sanity.AssertFailure: ASSERT FAILED
> col1.getClass() (class org.apache.derby.iapi.types.SQLVarchar) expected to be
> the same as col2.getClass() (class org.apache.derby.iapi.types.SQLChar)
> at
> org.apache.derby.shared.common.sanity.SanityManager.THROWASSERT(SanityManager.java:149)
> at
> org.apache.derby.impl.store.access.sort.MergeSort.checkColumnTypes(MergeSort.java:472)
> at
> org.apache.derby.impl.store.access.sort.MergeInserter.insert(MergeInserter.java:106)
> at
> org.apache.derby.impl.sql.execute.SortResultSet.loadSorter(SortResultSet.java:318)
> at
> org.apache.derby.impl.sql.execute.SortResultSet.openCore(SortResultSet.java:269)
> at
> org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(ProjectRestrictResultSet.java:169)
> at
> org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(BasicNoPutResultSetImpl.java:260)
> at
> org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:358)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1182)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.execute(EmbedStatement.java:585)
> 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)
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