Full document replacement can change type of _id

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    • Query Execution
    • ALL
    • v3.6
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      > db.c.insert({_id: 1})
WriteResult({ "nInserted" : 1 })
> db.c.update({_id: 1}, {_id: NumberDecimal(1)})
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
> db.c.find()
{ "_id" : NumberDecimal("1.00000000000000") }
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      > db.c.insert({_id: 1}) WriteResult({ "nInserted" : 1 }) > db.c.update({_id: 1}, {_id: NumberDecimal(1)}) WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 }) > db.c.find() { "_id" : NumberDecimal( "1.00000000000000" ) }
    • Query 2018-02-12, QO 2023-02-20
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      Full document replacement can change the type of immutable fields in 3.6. It cannot change the value. Modifier-style updates cannot change the type.

            Assignee:
            [DO NOT USE] Backlog - Query Execution
            Reporter:
            Benety Goh
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              Created:
              Updated:
              Resolved: