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mongo update in document in array
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| db.rooms.insert({_id: 1234567890, members: [{name: "hoge", age: 20}, {name: "fuga", age: 21}]}) | |
| db.rooms.update({_id: 1234567890}, {$set: {"members.0.name": "piyo", "members.0.age": 18, "members.1.name": "rodorigesu", "members.1.age": 46}}) |
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