[GitHub] [flink] fhueske commented on pull request #6622: [FLINK-10222] [table] Table scalar function expression parses error when function name equals the exists keyword suffix

[GitHub]

I'll replace `a-zA-Z0-9\u005f\u0024\u0061-\u007a\u0041-\u005a\u0030-\u0039` by 
`\p{javaJavaIdentifierPart}` which matches all valid characters of Java 
identifiers.

[ Full content available at: https://github.com/apache/flink/pull/6622 ]
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