Operations in MongoDB
MongoDB
MongoDB: How to Remove a Field from Every Document
You can use the following methods to remove fields from every document in a collection in MongoDB:
Method 1: Remove One Field
db.collection.updateMany({}, {$unset: {"field1":1}})
Method 2:...
MongoDB
MongoDB: How to Add a New Field in a Collection
You can use the following methods to add a new field to every document in a collection in MongoDB:
Method 1: Add New Field Without...
MongoDB
MongoDB: How to Check if Field Contains a String
You can use the following syntax in MongoDB to check if a certain field contains a specific string:
db.collection.findOne({name: {$regex : /string/}})
The following examples show...
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