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 }