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  1. Core Server
  2. SERVER-11984

Can't perform queries on sub-documents stored in a field name = the value of that document's index within an array in version 2.4

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    • Type: Icon: Bug Bug
    • Resolution: Done
    • Priority: Icon: Major - P3 Major - P3
    • 2.5.4
    • Affects Version/s: 2.4.9
    • Component/s: Querying
    • Environment:
    • Minor Change
    • ALL
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      2.4.9-pre-

      > db.c.insert({a:[{"0":{b:"Hello"}}]})
> db.c.find({"a.0.b":"Hello"})
>

      Compare that to 2.5.5-pre-:

      > db.c.insert({a:[{"0":{b:"Hello"}}]})
Insert WriteResult({ "ok" : 1, "n" : 1 })
> db.c.find({"a.0.b":"Hello"})
{ "_id" : ObjectId("52a10cd0dd47ad0373e22ae6"), "a" : [ { "0" : { "b" : "Hello" } } ] }
>
      Show
      2.4.9-pre- > db.c.insert({a:[{ "0" :{b: "Hello" }}]}) > db.c.find({ "a.0.b" : "Hello" }) > Compare that to 2.5.5-pre-: > db.c.insert({a:[{ "0" :{b: "Hello" }}]}) Insert WriteResult({ "ok" : 1, "n" : 1 }) > db.c.find({ "a.0.b" : "Hello" }) { "_id" : ObjectId( "52a10cd0dd47ad0373e22ae6" ), "a" : [ { "0" : { "b" : "Hello" } } ] } >

      Versions 2.4 and 2.5 of MongoDB return different results when performing a query on a sub-document stored in a field that has a numeric name that happens to be the value of the index at which that document is stored within an array field.

            Assignee:
            benety.goh@mongodb.com Benety Goh
            Reporter:
            luke.lovett Luke Lovett
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              Created:
              Updated:
              Resolved: