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  1. Documentation
  2. DOCS-1411

Clarifications on BSON field ordering

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    • Type: Icon: Task Task
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
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      1. In JSON key order doesn't matter for comparison, in BSON it does (e.g. in JSON {'a': 1, 'b': 2}

        ==

        {'b': 2, 'a': 1}

        , in BSON

        {'a': 1, 'b': 2}

        !=

        {'b': 2, 'a': 1}

        )

      2. BSON is ordered but driver representations may not be
      3. The server itself does not guarantee order (e.g updating a document may change the order of its fields)
      4. The implications of 1, 2, and 3 for unique indexes and other MongoDB operations (e.g. commands where the command name must be the first field, geospatial queries and point format, etc.).

            Assignee:
            Unassigned Unassigned
            Reporter:
            stephen.lee Stephen Lee
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              Created:
              Updated:
              Resolved:
              10 years, 35 weeks ago