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https://issues.apache.org/jira/browse/TAJO-230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi resolved TAJO-230.
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Resolution: Won't Fix
We already support unicode in quoted identifiers.
> Support unicode identifiers
> ---------------------------
>
> Key: TAJO-230
> URL: https://issues.apache.org/jira/browse/TAJO-230
> Project: Tajo
> Issue Type: New Feature
> Components: SQL Parser
> Reporter: Hyunsik Choi
>
> The current parse only recognizes a combination of alphabet characters and
> underscore as an identifier used for function names, column names, and table
> names. This is because of the following antlr lexer rules:
> {code}
> Identifier
> : Nonreserved_keywords
> | Regular_Identifier
> ;
> Regular_Identifier
> : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|Digit|'_')*
> ;
> {code}
> In some CJK country, their characters can be used as identifiers. We need to
> support unicode identifier.
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