update data in MongoDB collection using updateOne updateMany replaceOne

Update Data
updateOne
updateMany
replaceOne

Update Data

To Update Data in MongoDB document or collections, we use updateOne, updateMany and replaceOne methods.

We will use a sample database (cars ) shown below for reference. The name of collection is suzuki.

Sample Database


[{"name": "swift","type": "hatchback","price":"800000"},
 {"name": "ciaz","type": "sedan","price":"1000000"},
 {"name": "baleno","type": "hatchback","price":"850000"},
 {"name": "scross","type": "crossover","price":"11500000"},
 {"name": "brezza","type": "suv","price":"990000"},
 {"name": "gypsy","type": "suv","price":"750000"}
]

updateOne

updateOne method is used to update the first document.

$set is a update operator in MongoDB. It comes under Field Update Operators.

WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

db.suzuki.update({name:'swift'},{$set:{fuel:'petrol'}})

Check after update

{ "_id" : ObjectId("5eb44282ea2adece905a24b0"), "name" : "swift", "type" : "hatchback", "price" : 800000, "fuel" : "petrol" }

db.suzuki.find({name:'swift'}})

updateMany

updateMany is used to update more than one documents.

$set update operator is again required in below example.

{ "acknowledged" : true, "matchedCount" : 4, "modifiedCount" : 4 }

db.suzuki.updateMany({fuel:'petrol'},{$set:{emission:'bs6'}})

Check after update

{ "_id" : ObjectId("5eb44282ea2adece905a24b0"), "name" : "swift", "type" : "hatchback", "price" : 800000, "fuel" : "petrol", "emission" : "bs6" }

db.suzuki.find({name:'swift'}})

replaceOne

replaceOne method is used to replace a document from collection (except _id).

replaceOne method will replace entire data in document.

{ "acknowledged" : true, "matchedCount" : 1, "modifiedCount" : 1 }

db.suzuki.replaceOne({name:'brezza'},{name:'vitara brezza',fuel:'petrol',price:'990000'})

Check after update

{ "_id" : ObjectId("5eb53b3491fc73f290f38254"), "name" : "vitara brezza", "fuel" : "petrol", "price" : "990000" }

db.suzuki.find({name:'vitara brezza'})