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From "Jesus Camacho Rodriguez (JIRA)" <j...@apache.org>
Subject [jira] [Created] (CALCITE-1760) Implement utility method to identify lossless casts
Date Tue, 25 Apr 2017 16:24:05 GMT
Jesus Camacho Rodriguez created CALCITE-1760:
------------------------------------------------

             Summary: Implement utility method to identify lossless casts
                 Key: CALCITE-1760
                 URL: https://issues.apache.org/jira/browse/CALCITE-1760
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez
            Priority: Minor


Implement utility method to identify 'lossless' casts, i.e., casts from which the original
value of the field can be certainly recovered?

For instance, int -> bigint is true (as you can cast back to int without loss of information),
however bigint -> int is false.



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