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How do you update a MongoDB document while replacing the entire document?
Let us first create a collection with a document −
>db.replacingEntireDocumentDemo.insertOne({"StudentFirstName":"John","StudentLastName":"Smith","StudentCountryName":"US"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5cd3119bb64f4b851c3a13e8")
}Following is the query to display document from a collection with the help of find() method −
> db.replacingEntireDocumentDemo.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5cd3119bb64f4b851c3a13e8"),
"StudentFirstName" : "John",
"StudentLastName" : "Smith",
"StudentCountryName" : "US"
}Following is the query to update a MongoDB document while replacing the entire document −
>db.replacingEntireDocumentDemo.update({"StudentFirstName":"John","StudentLastName":"Smith","StudentCountryName":"US"}, {"StudentFirstName":"David","StudentLastName":"Miller","StudentCountryName":"AUS"});
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })Let us display all the records from the collection once again −
> db.replacingEntireDocumentDemo.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5cd3119bb64f4b851c3a13e8"),
"StudentFirstName" : "David",
"StudentLastName" : "Miller",
"StudentCountryName" : "AUS"
}
Updated on: 30-Jul-2019
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