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https://issues.apache.org/jira/browse/DERBY-2956?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kathey Marsden closed DERBY-2956.
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> With a collated database USER cannot be used in query against user tables
> without cast
> --------------------------------------------------------------------------------------
>
> Key: DERBY-2956
> URL: https://issues.apache.org/jira/browse/DERBY-2956
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.4.0.0
> Reporter: Kathey Marsden
>
> ij> create table staff (empname varchar(30));
> 0 rows inserted/updated/deleted
> ij> insert into staff values('APP');
> 1 row inserted/updated/deleted
> ij> insert into staff values('KATHEY');
> 1 row inserted/updated/deleted
> ij> select * from staff where empname like USER;
> ERROR 42ZA2: Operand of LIKE predicate with type VARCHAR(30) and collation
> TERRITORY_BASED is not compatable with LIKE p
> attern operand with type VARCHAR(128) and collation UCS_BASIC.
> ij>
> Workaround is to use a cast
> ij> select * from staff where empname like CAST(USER as VARCHAR(30));
> EMPNAME
> ------------------------------
> APP
> 1 row selected
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