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https://issues.apache.org/jira/browse/CALCITE-6046?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benchao Li closed CALCITE-6046.
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> SQL parser failed when parsing a comment string start with '&u'
> ---------------------------------------------------------------
>
> Key: CALCITE-6046
> URL: https://issues.apache.org/jira/browse/CALCITE-6046
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.35.0
> Reporter: xiaogang zhou
> Priority: Major
>
> quoteStringLiteralUnicode returns unparsed string with u&' prefix, which will
> cause the SqlLiteral
>
> for example with a SQL
>
> {code:java}
> // code placeholder
> CREATE TABLE source (
> a BIGINT
> ) comment '测试test'
> WITH (
> 'connector' = 'test'
> ); {code}
> with a parsed Sqlnode, the toString will create a SQL like below, which is
> not parsable again.
>
> {code:java}
> // code placeholder
> CREATE TABLE `source` (
> `a` BIGINT
> )
> COMMENT u&'\5218\51eftest' WITH (
> 'connector' = 'test'
> ) {code}
> I think this is caused by
> {code:java}
> // code placeholder
> public void quoteStringLiteralUnicode(StringBuilder buf, String val) {
> buf.append("u&'"); {code}
> not sure if I misconfigured something. Is it possiable to remove the
> buf.append("u&'"); ?
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