mongodb $unwind for ikke-ideelt indlejret dokument

• $unwind dekonstruer runder-arrayet
• $project for at vise obligatoriske felter

db.collection.aggregate([
  { $unwind: "$rounds" },
  {
    $project: {
      GameID: 1,
      ComputerName: 1,
      max_player_pot: "$rounds.round_values.max_player_pot",
      pot_multiple: "$rounds.round_values.pot_multiple"
    }
  }
])

Legeplads

En mere dynamisk tilgang,

• $mergeObjects at flette obligatoriske felter fra root og round_values objekt
• $replaceRoot for at erstatte ovenstående flettede objekt til root

db.collection.aggregate([
  { $unwind: "$rounds" },
  {
    $replaceRoot: {
      newRoot: {
        $mergeObjects: [
          {
            GameID: "$GameID",
            ComputerName: "$ComputerName"
          },
          "$rounds.round_values"
        ]
      }
    }
  }
])

Legeplads