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  1. Core Server
  2. SERVER-28017

$ne perform a case sensitive find when it should do a case insensitive find based on collation settings

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    • Fully Compatible
    • ALL
    • v3.4
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      use admin
      db.runReadCommand({ setFeatureCompatibilityVersion:"3.4"})
      use testdb
      db.createCollection("testcollection",{collation:{locale: "sv", strength:1, numericOrdering:true}})
      db.testcollection.insert( { data: "test" } )
      db.testcollection.insert( { data: "TEST" } )
       
      > db.testcollection.find({ data: { $eq: "test" } })
      { "_id" : ObjectId("58a461e0aa464d5347f68ecb"), "data" : "test" }
      { "_id" : ObjectId("58a461f0aa464d5347f68ecc"), "data" : "TEST" }
       
      > db.testcollection.find({ data: { $ne: "test" } })
      { "_id" : ObjectId("58a461f0aa464d5347f68ecc"), "data" : "TEST" }
      >//the above query should not result in any document but it returns the one with uppercase.
      

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      use admin db.runReadCommand({ setFeatureCompatibilityVersion:"3.4"}) use testdb db.createCollection("testcollection",{collation:{locale: "sv", strength:1, numericOrdering:true}}) db.testcollection.insert( { data: "test" } ) db.testcollection.insert( { data: "TEST" } )   > db.testcollection.find({ data: { $eq: "test" } }) { "_id" : ObjectId("58a461e0aa464d5347f68ecb"), "data" : "test" } { "_id" : ObjectId("58a461f0aa464d5347f68ecc"), "data" : "TEST" }   > db.testcollection.find({ data: { $ne: "test" } }) { "_id" : ObjectId("58a461f0aa464d5347f68ecc"), "data" : "TEST" } >//the above query should not result in any document but it returns the one with uppercase.
    • Query 2017-03-06

    Description

      Using the following collation settings on collection collation:

      {locale: "sv", strength:1, numericOrdering:true}

      makes $eq searches case insensitive.
      But when the filter is $ne it is not case insensitive.

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            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
            daniel.moqvist@knowit.se daniel moqvist
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              Created:
              Updated:
              Resolved: