How can I update and increment two fields in one command in MongoDB?



Let us first create a collection with documents −

> db.incrementDemo.insertOne({"Value1":10,"Value2":20}); {    "acknowledged" : true,    "insertedId" : ObjectId("5cbdaf07de8cc557214c0e15") }

Display all documents from a collection with the help of find() method. The query is as follows −

> db.incrementDemo.find().pretty();

This will produce the following output −

{    "_id" : ObjectId("5cbdaf07de8cc557214c0e15"),    "Value1" : 10,    "Value2" : 20 }

Following is the query to increment two fields in one command in MongoDB −

> db.incrementDemo.update({},{ $inc : { Value1 : 1, Value2 : 1 } }); WriteResult({ "nMatched" : 1, "nUpserted" : 0, "nModified" : 1 })

Let us check both the fields have been incremented with value 1 or not −

> db.incrementDemo.find().pretty();

This will produce the following output −

{    "_id" : ObjectId("5cbdaf07de8cc557214c0e15"),    "Value1" : 11,    "Value2" : 21 }
Updated on: 2019-07-30T22:30:26+05:30

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