[OASIS Issue Tracker] (ODATA-901) substring: Define negative index for substring function

[OASIS Issues Tracker <workgroup_mailer@lists.oasis-open.org>]

Michael Pizzo created ODATA-901:
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             Summary: substring: Define negative index for substring function
                 Key: ODATA-901
                 URL: https://issues.oasis-open.org/browse/ODATA-901
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: OData URL Conventions
    Affects Versions: V4.0_ERRATA02
         Environment: [Proposed]
            Reporter: Ralf Handl
            Assignee: Ralf Handl
             Fix For: V4.0_ERRATA03


This could be a "bad request" returning no results at all, or it could evaluate to null, which may just lead to excluding the offending instance from the result.

Or a mix of both: negative start index is "bad request", start index or desired length beyond the end of the first argument is "null".



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