MongoDB: Can I insert null values?

You can insert a property with null value.

 

Example

db.employee.insert({"firstName" : "Krishna", "lastName" : "Gurram", "hobbies" : null})
db.employee.insert({"firstName" : "Thulasi", "lastName" : null, "hobbies" : ["playing tennis", "singing"]})

 

> db.employee.insert({"firstName" : "Krishna", "lastName" : "Gurram", "hobbies" : null})
WriteResult({ "nInserted" : 1 })
> 
> db.employee.insert({"firstName" : "Thulasi", "lastName" : null, "hobbies" : ["playing tennis", "singing"]})
WriteResult({ "nInserted" : 1 })
> 
> 
> db.employee.find().pretty()
{
    "_id" : ObjectId("60bdc1488251689f64fb3ef3"),
    "firstName" : "Krishna",
    "lastName" : "Gurram",
    "hobbies" : null
}
{
    "_id" : ObjectId("60bdc16e8251689f64fb3ef4"),
    "firstName" : "Thulasi",
    "lastName" : null,
    "hobbies" : [
        "playing tennis",
        "singing"
    ]
}

 

 

 

 

 

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