mongodb-query

问题 I need test the accuracy of a server mongodb. I am trying to insert a sequence of data, take the moment and it was sent to the database to know when it was inserted. I'm trying this: #!/usr/bin/python from pymongo import Connection from datetime import date, timedelta, datetime class FilterData: @classmethod def setData(self, serialData): try: con = Connection('IP_REMOTE', 27017, safe=True) db = con['resposta'] inoshare = db.resposta inoshare.insert(serialData) con.close() except Exception as

问题 I am from an Oracle PLSQL background and I have just started learning MongoDB commands. >db.Employee.find() { "_id" : 10, "EmployeeName" : "Smith" } { "_id" : 20, "EmployeeName" : "Nandhi" } { "_id" : 30, "EmployeeName" : "Rajan" } { "_id" : 50, "EmployeeName" : "Raju" } I need to query the documents like: WHERE EmployeeName = "Smith" OR (EmployeeName = "Rajan" AND _id = 30); I have written the corresponding code as below: db.Employee.find({$or:[{"EmployeeName":"Smith",{"EmployeeName":"Rajan"

问题 I have a collection having 1Million documents... I have passed the option for allowDiskUse and now it is throwing error TypeError: callback.apply is not a function I have searched for this but could get the solution... Please help const pictures = await Picture.aggregate([ { $sort: { createdAt: -1 }}, { $group: { _id: { $dateToString: { format: "%Y-%m-%d", date: "$createdAt" } }, pictures: { $push: { _id: '$_id', image: '$image', time: { $dateToString: { format: "%H:%M:%S", date: "$createdAt"

问题 I have a document structure like this: { "_id" : ObjectId("59d7cd63dc2c91e740afcdb"), "dateJoined": ISODate("2014-12-28T16:37:17.984Z"), "dateActivated": ISODate("2015-02-28T16:37:17.984Z"), "enrolled" : [ { "month":-10, "enrolled":'00'}, { "month":-9, "enrolled":'00'}, { "month":-8, "enrolled":'01'}, //other months { "month":8, "enrolled":'11'}, { "month":9, "enrolled":'11'}, { "month":10, "enrolled":'00'} ] } "month" value in enrolled is relative to dateJoined that range from -X to +X that

问题 I am trying to update a record in mongoDB using updateOne, the un updating record is in array, and all fields are updating except one field which is country , I have tried to update it using MongoChef (a GUI of MongoDB for linux), but it doesn't work, also If I update one the Document using Edit in GUI then that record is ready to update after that . I have tried with the following query in MongoChef db.institutions.updateOne({ "campus": { "$elemMatch": { "_id": ObjectId(

问题 I have following data. { "name" : "Maria", "facebook" : [ { "data" : "fb.com", "privacy" : true } ], "twitter" : [ { "data" : "twitter.com", "privacy" : false } ], "google" : [ { "data" : "google.com", "privacy" : true } ], "phno" : [ { "data" : "+1-1289741824124", "privacy" : true } ] } I want to return only data having privacy is equal to true. How do I do it ? I tried but it returns all data having privacy is equal to false also. How do I query the data ? Please post MongoDB query not

问题 How can I remove "\n" from results of searching values in mongo db without remove it from the values of mongo db ? please I need your help! 回答1: Example with 2 documents: db.testcol.insert({ textstr: "Hello World\nBye World\nHello World\n" }) db.testcol.insert({ textstr: "Testing\n123\nTesting\n" }) db.testcol.find({}, {_id: 0, textstr: 1}).forEach(function(e, i) { e.textstr=e.textstr.replace(new RegExp('\n', 'g'), ""); printjson(e); }); Will output: { "textstr" : "Hello WorldBye WorldHello

问题 I am combining two collection using $lookup and I am able to apply a filter on the 'joined' collection and use a projection on the starting collection , but I did not manage to combine both a filter and a projection on the joined collection trying several approach using $redact and $project. I have looked intensively on stackoverflow, but I could not find this combination. Here come an example: collection meta: { "Exp": "A","test": "OK","date": "3"} { "Exp": "B","test": "OK","date": "5"} {

问题 I have a collection with some documents and each document has ha list of objects representing a temporal interval in epoch with a keyword. I want to update the final value of the interval of each object in the right document where the ending value is greater than a value. If nothing can be updated I want to insert a new interval with both start and end as the new value and with the keyword used in the query. I'm using nifi to perform this task and the update block, with upsert enabled. I can

问题 I have a collection with some documents and each document has ha list of objects representing a temporal interval in epoch with a keyword. I want to update the final value of the interval of each object in the right document where the ending value is greater than a value. If nothing can be updated I want to insert a new interval with both start and end as the new value and with the keyword used in the query. I'm using nifi to perform this task and the update block, with upsert enabled. I can