Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-9406

Allow treating ObjectId type as date in $project phase

    XMLWordPrintable

Details

    • Fully Compatible

    Description

      Since ObjectId() encompasses an approximation of insertion date it would be helpful if _id/things of ObjectId() type could be operated/projected the same way as Datetime type object.

      {case}
      {$project:{$year:"$_id"}} would extract year out of ObjectId().getTimestamp equivalent.{case}

      One question would be whether ObjectId could be operated on directly via date/interval arithmetic. I.e. whether it can be used anywhere a date can be used returning a standard Datetime type as a result from say {$subtract:["$_id",86400000]} which can only return ts of one day before that ObjectId's timestamp.

      Attachments

        Issue Links

          Activity

            People

              asya.kamsky@mongodb.com Asya Kamsky
              asya.kamsky@mongodb.com Asya Kamsky
              Votes:
              43 Vote for this issue
              Watchers:
              28 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: