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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: 30-Jul-2019
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