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Update multiple elements in an array in MongoDB?
To update multiple elements, use $[]. The $[] is an all positional operator indicating that the update operator should modify all elements in the specified array field.
Let us first create a collection with documents −
> db.demo385.insertOne({"ServerLogs": [
... {
... "status":"InActive"
... },
... {
... "status":"InActive"
... },
... {
... "status":"InActive"
... }
... ]
... }
... );
{
"acknowledged" : true,
"insertedId" : ObjectId("5e5b6a7522064be7ab44e7f5")
}Display all documents from a collection with the help of find() method −
> db.demo385.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5e5b6a7522064be7ab44e7f5"),
"ServerLogs" : [
{
"status" : "InActive"
},
{
"status" : "InActive"
},
{
"status" : "InActive"
}
]
}Following is the query to update multiple elements in an array in MongoDB −
> db.demo385.update(
... { "_id" : ObjectId("5e5b6a7522064be7ab44e7f5") },
... { "$set": { "ServerLogs.$[].status": "Active" }}
... )
WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })Display all documents from a collection with the help of find() method −
> db.demo385.find().pretty();
This will produce the following output −
{
"_id" : ObjectId("5e5b6a7522064be7ab44e7f5"),
"ServerLogs" : [
{
"status" : "Active"
},
{
"status" : "Active"
},
{
"status" : "Active"
}
]
}
Updated on: 02-Apr-2020
1K+ Views
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