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MongoDB query to update nested document
Let us create a collection with documents −
> db.demo595.insertOne( { "Information": [
{ "_id": new ObjectId(), Name:"Chris" },
{ _id:new ObjectId(), Name:"Robert" }
] } );
{
"acknowledged" : true,
"insertedId" : ObjectId("5e93369cfd2d90c177b5bce4")
}Display all documents from a collection with the help of find() method −
> db.demo595.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5e93369cfd2d90c177b5bce4"),
"Information" : [
{
"_id" : ObjectId("5e93369cfd2d90c177b5bce2"),
"Name" : "Chris"
},
{
"_id" : ObjectId("5e93369cfd2d90c177b5bce3"),
"Name" : "Robert"
}
]
}Following is the query to update nested document −
>db.demo595.update({"Information._id":ObjectId("5e93369cfd2d90c177b5bce2")},
{$set:{"Info rmation.$.Name":"David Miller"}});
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })Display all documents from a collection with the help of find() method −
> db.demo595.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5e93369cfd2d90c177b5bce4"),
"Information" : [
{
"_id" : ObjectId("5e93369cfd2d90c177b5bce2"),
"Name" : "David Miller"
},
{
"_id" : ObjectId("5e93369cfd2d90c177b5bce3"),
"Name" : "Robert"
}
]
}
Updated on: 15-May-2020
2K+ Views
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