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Which characters are NOT allowed in MongoDB field names?
Do not use $ symbol or period (.) because these characters are not allowed for MongoDB field names. The field shouldn’t start with $.
Here is an example of the allowed characters −
> db.charactersAllowedDemo.insertOne({"Employee Name" : "John"});
{
"acknowledged" : true,
"insertedId" : ObjectId("5c7fefbc8d10a061296a3c6d")
}Display all documents from a collection with the help of find() method. The query is as follows −
> db.charactersAllowedDemo.find().pretty();
The following is the output −
{
"_id" : ObjectId("5c7fefbc8d10a061296a3c6d"),
"Employee Name" : "John"
}
Updated on: 29-Jun-2020
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