如何在替换整个文档的同时更新 MongoDB 文档?
mongodbdatabasebig data analytics更新于 2026/2/16 1:52:17
首先，我们创建一个包含文档的集合 −
>db.replacingEntireDocumentDemo.insertOne({"StudentFirstName":"John","StudentLastName":"Smith","StudentCountryName":"US"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd3119bb64f4b851c3a13e8")
}
以下查询使用 find() 方法从集合中显示文档 −
> db.replacingEntireDocumentDemo.find().pretty();
这将产生以下输出 −
{
"_id" : ObjectId("5cd3119bb64f4b851c3a13e8"),
"StudentFirstName" : "John",
"StudentLastName" : "Smith",
"StudentCountryName" : "US"
}
以下查询用于更新 MongoDB 文档并替换整个文档 −
>db.replacingEntireDocumentDemo.update({"StudentFirstName":"John","StudentLastName":"Smith","StudentCountryName":"US"}, {"StudentFirstName":"David","StudentLastName":"Miller","StudentCountryName":"AUS"});
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })
让我们再次显示集合中的所有记录 −
> db.replacingEntireDocumentDemo.find().pretty();
这将产生以下输出 −
{
"_id" : ObjectId("5cd3119bb64f4b851c3a13e8"),
"StudentFirstName" : "David",
"StudentLastName" : "Miller",
"StudentCountryName" : "AUS"
}
