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https://issues.apache.org/jira/browse/DERBY-6185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Knut Anders Hatlen reassigned DERBY-6185:
-----------------------------------------
Assignee: (was: Knut Anders Hatlen)
Oops, I somehow missed that comment when I read through the new comments on
this issue today. Looks like you've got this one under control, then. :)
Changing the issue back to unassigned status. Feel free to grab it, Mamta.
I was thinking what if we changed the init() method of this node type to take
an extra parameter with the value of the field. Then it would be impossible to
create a new instance without at least having considered what value to put into
that field. That'd probably make it less likely to be missed.
> Query against view with "where name LIKE 'Col1' ESCAPE '\' " failed
> --------------------------------------------------------------------
>
> Key: DERBY-6185
> URL: https://issues.apache.org/jira/browse/DERBY-6185
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.1.3.3, 10.5.3.2, 10.8.2.2, 10.8.3.0
> Environment: windows 7
> Reporter: Rong Qu
> Attachments: set-for-rewrite.diff
>
>
> The error can be reproduced,
> 1) create table mytbl1 (name clob(10K));
> 2) create table mytbl2 (name clob(10K));
> 3) create view myview (name) as select t1.name from mytbl1 t1 union all
> select t2.name from mytbl2 t2;
> 4) select name from myview where name LIKE 'Col1' ESCAPE '\';
> "4)" failed with error message "
> ERROR 42818: Comparisons between 'CLOB (UCS_BASIC)' and 'CHAR (UCS_BASIC)'
> are not supported. Types must be comparable. String types must also have
> matching collation. If collation does not match, a possible solution is to
> cast operands to force them to the default collation (e.g. SELECT tablename
> FROM sys.systables WHERE CAST(tablename AS VARCHAR(128)) = 'T1')
> at org.apache.derby.iapi.error.StandardException.newException(Unknown
> Source)
> at
> org.apache.derby.impl.sql.compile.BinaryComparisonOperatorNode.bindComparisonOperator(Unknown
> Source)
> at
> org.apache.derby.impl.sql.compile.PredicateList.pushExpressionsIntoSelect(Unknown
> Source)
> at org.apache.derby.impl.sql.compile.UnionNode.pushExpressions(Unknown
> Source)
> at org.apache.derby.impl.sql.compile.UnionNode.pushExpressions(Unknown
> Source)
> at
> org.apache.derby.impl.sql.compile.ProjectRestrictNode.pushExpressions(Unknown
> Source)
> at org.apache.derby.impl.sql.compile.FromList.pushPredicates(Unknown
> Source)
> at org.apache.derby.impl.sql.compile.SelectNode.preprocess(Unknown
> Source)
> at
> org.apache.derby.impl.sql.compile.DMLStatementNode.optimizeStatement(Unknown
> Source)
> at
> org.apache.derby.impl.sql.compile.CursorNode.optimizeStatement(Unknown Source)
> at org.apache.derby.impl.sql.GenericStatement.prepMinion(Unknown Source)
> at org.apache.derby.impl.sql.GenericStatement.prepare(Unknown Source)
> at
> org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.prepareInternalStatement(Unknown
> Source)
> ... 19 more
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