Ruben Q L created CALCITE-3951:
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             Summary: Support different comparison based on collation
                 Key: CALCITE-3951
                 URL: https://issues.apache.org/jira/browse/CALCITE-3951
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Ruben Q L
            Assignee: Ruben Q L


Currently SqlCollation defines concepts like Coercibility, Charset, Locale, 
etc. However, we cannot specify on a certain collation that e.g. a string field 
should use case insensitive comparison. The goal of this ticket is to evolve 
SqlCollation to support that, and adapt the corresponding classes to use that 
(optional) "non-standard" comparison.



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