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  1. Core Server
  2. SERVER-32141

Support for non-ASCII characters in $toLower

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    • Type: Icon: Improvement Improvement
    • Resolution: Unresolved
    • Priority: Icon: Minor - P4 Minor - P4
    • None
    • Affects Version/s: None
    • Component/s: Aggregation Framework
    • Labels:
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    • Query Optimization

      From docs "$toLower only has a well-defined behavior for strings of ASCII characters."

      As a result, BIC pushdown of the lcase (lowercase) function gives incorrect results for some characters, for example: ƏŨÓ€. Lowercase versions would be əũó€, but 

      { $toLower : "ƏŨÓ€"}

      leaves the characters unchanged.

      It would be great if additional characters like these were supported.

            Assignee:
            backlog-query-optimization [DO NOT USE] Backlog - Query Optimization
            Reporter:
            kaitlin.mahar@mongodb.com Kaitlin Mahar
            Votes:
            3 Vote for this issue
            Watchers:
            7 Start watching this issue

              Created:
              Updated: