I have a mongo collection with documents containing arrays: { item: "journal", qty: 25, tags: ["blank", "red"], dim_cm: [ 14, 21 ] }, { item: "notebook", qty: 50, tags: ["red", "blank"], dim_cm: [ 14, 21 ] }, { item: "paper",…
With a MongoDB collection name department with the following structure: { "_id":99, "name":"Erick Kalewe", "faculty":"Zazio", "lecturers":[ { "lecturerID":31, "name":"Granny Kinton", "email":"[email protected]", "imparts":[ { "groupID":70, "codCourse":99 } ] }, { "lecturerID":36, "name":"Michale Dahmel", "email":"[email protected]", "imparts":[ { "groupID":100, "codCourse":60 } ] }…
I had taken this array arr = ["1","2"] And I want to find this id's are present in mongodb in user collection or not, So how do I write query in mongoose for that? user.find({'empid':'arr'},(err,res)) I am doing like this.
My app uses CoreData. One of the entities is final class ViewItem: NSManagedObject { // … } During unit tests, I am trying to execute the following fetch request: let viewItemFetchRequest = NSFetchRequest<ViewItem>(entityName: "ViewItem") as viewContext.performAndWait { do { let…
I want to get the value of a nested object within an array. I get the _id of the parent object, as well as the _id of the child object within the array, but I am not able to retrieve…
Let's say I have some documents that have an array like this: [ { "_id": ObjectId("5a934e000102030405000000"), "letters": ["a","b","c","d"] }, { "_id": ObjectId("5a934e000102030405000001"), "letters": ["a","b"] }, { "_id": ObjectId("5a934e000102030405000002"), "letters": ["a"] }, { "_id": ObjectId("5a934e000102030405000003"), "letters": ["x","a","b"] } ] I want…
I have several documents, I want to remove the alphabet from the data field, based on the 1st _ in the data field, please see the following output. and if the data is empty the get message "Not Auto found".…
I'm trying to get a list of reviews from an api. This gives me a JSON with nested properties. I manage to get almost all the data I need except from the nested array ["value"]["answers"]["value"] because sometimes the array ["answers"]…
I am new to Python to Stackoverflow and GUI Python (please be gentle) and am trying to aplaing how to do a KNN analysis. I am using a combination of codes I built it myself: Python - AttributeError: doc =…
Forgive the contrived example below, but how can I filter like this? Using a Set to dedup isn't an option since my real data objects have another property that is unique for each. struct MyDataObject { var startDate: Date var…