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[jira] [Created] (CALCITE-2273) <Unicode 6 digit escape value> misinterpreted

Zhong Yu created CALCITE-2273:

             Summary: <Unicode 6 digit escape value> misinterpreted 
                 Key: CALCITE-2273
             Project: Calcite
          Issue Type: Bug
            Reporter: Zhong Yu
            Assignee: Julian Hyde



The following string literal is accepted by Calcite parser, but the result value in Java is incorrect

Cause: currently, SqlLiteral.unescapeUnicode() only intends to handle 4-digit unicode escape value in the form of \xyzw . When given the 6-digit form \+xyzwrs, it parses the first four chars "+xyz" as a hexadecimal, which succeeds too. Therefore the result value contains 4 characters: [\u0xyz, w, r, s]

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