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Posted to issues@calcite.apache.org by "Mihai Budiu (Jira)" <ji...@apache.org> on 2026/10/18 00:24:00 UTC

[jira] [Created] (CALCITE-7866) CASTS from string values accept Java idioms which are not legal in SQL

Mihai Budiu created CALCITE-7866:
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             Summary: CASTS from string values accept Java idioms which are not legal in SQL
                 Key: CALCITE-7866
                 URL: https://issues.apache.org/jira/browse/CALCITE-7866
             Project: Calcite
          Issue Type: Bug
            Reporter: Mihai Budiu


The Calcite runtime uses Java to parse values when converting strings to other types. As a result, the runtime accepts Java constructs which are not legal in SQL. Examples:

 
||Cast||String||Java rule that accepts it||Constant||
|DOUBLE, REAL|{{{}'1.5d'{}}}, {{'1.5f'}}|type suffix on a Java number|1.5|
|DOUBLE, REAL|{{'0x1p3'}}|hexadecimal floating-point number|8.0|
|INT types|{{'٧'}} (U+0667, Arabic-Indic 7)|{{Character.digit}} accepts any Unicode digit|7|
|BOOLEAN|{{'falſe'}} (U+017F, long s)|{{equalsIgnoreCase}} upper-cases {{ſ}} to {{S}}|FALSE|



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