Update individual field in collection database object
db.collection.updateOne({title: "3 title"}, {$set:{counter: 3}})
Insert new string in collection database object
db.collection.update({}, {$set: {counter: 1}}, {$inc : {counter: 1}}, {upsert : true})
Delete string from collection database object
db.example.updateMany({},{"$unset":{"tags.words":1}})
Delete collection object by id
db.test_users.deleteOne( {"_id": ObjectId("4d512b45cc9374271b02ec4f")})
Delete all documents from collection
db.collection.deleteMany({})
https://www.mongodb.com/docs/mongodb-shell/crud/delete/
db.collection.update({ { _id : id }, { $pull: { "list": "four" } }});
db.collection.updateMany( { URL: { $regex: /Long("/ } }, [{ $set: { URL: { $replaceOne: { input: "$URL", find: "Long("", replacement: "" } }} }])
db.getCollection('collectionName').updateMany({$inc : {counter: 1}}, {upsert : true})
db.getCollection('collectionName').updateMany({counter: {$in : ["some title", "some title 3"]}}, {$inc : {counter: 1}}, {upsert : true})
db.collection.aggregate([ { $group:{"_id":null, "data":{ $push:"$$ROOT" } } }, { $unwind:{ "path" : "$data", includeArrayIndex: 'counter' } }, { $addFields:{ "data.counter":{ $sum:["$counter", 1] }} }, { $replaceRoot:{ "newRoot":"$data" } }])
For this, set “unique:true” i.e. the unique constraint and avoid inserting duplicates as in the below syntax
db.cards.ensureIndex({yourFieldName: 1}, {unique: true, dropDups: true})
https://www.mongodb.com/basics/create-database
https://stackoverflow.com/questions/57982189/is-there-a-way-to-add-a-counter-to-mongodb-query
https://www.tutorialspoint.com/mongodb/mongodb_autoincrement_sequence.htm
https://www.tutorialspoint.com/mongodb/mongodb_update_document.htm
https://stackoverflow.com/questions/61964449/mongodb-update-multiple-documents-solution-update-document-counter-or-insert
https://stackoverflow.com/questions/12589792/how-to-replace-substring-in-mongodb-document
https://stackoverflow.com/questions/57982189/is-there-a-way-to-add-a-counter-to-mongodb-query
https://stackoverflow.com/questions/29487351/how-to-convert-string-to-numerical-values-in-mongodb
https://stackoverflow.com/questions/29487351/how-to-convert-string-to-numerical-values-in-mongodb
https://stackoverflow.com/questions/8218484/mongodb-inserts-float-when-trying-to-insert-integer
https://database.guide/7-ways-to-count-documents-in-mongodb/
https://stackoverflow.com/questions/24985684/mongodb-show-all-contents-from-all-collections
https://stackoverflow.com/questions/3974985/update-mongodb-field-using-value-of-another-field
https://stackoverflow.com/questions/1740023/mongodb-how-to-update-multiple-documents-with-a-single-command
https://www.w3resource.com/mongodb/mongodb-field-update-operator-$inc.php
https://stackoverflow.com/questions/71732533/add-number-field-in-project-mongodb?rq=1
https://stackoverflow.com/questions/66206713/trying-to-iterate-through-a-collection-of-mongodb-results-to-update-another-coll
https://www.baeldung.com/mongodb-upsert
