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View the time spent on a mongodb query

When operating mongodb on the command line, if you want to know the time of this statement using db.testrests....

From [MongoDBdiscussion group] 2017-05-02 09:23:30 0  1  578

How to query mongoDB based on the range of the value of an element in an array?

{Code...} How to query data matching coord with latitude less than -95.754168

From [MongoDBdiscussion group] 2017-05-02 09:23:28 0  1  854

mongodb - Problem using then after mongoose save operation

This is my save operation, but the output order of the print statement is B: undefined A: Correct content {cod...

From [MongoDBdiscussion group] 2017-05-02 09:23:27 0  2  683

mongodb - mongoose simultaneous query, how to wrap with promise.all

What I want to achieve is to operate the topic table and user table at the same time after reply-save, and the...

From [MongoDBdiscussion group] 2017-05-02 09:23:25 0  1  693

Mongodb queries whether a piece of data exists?

If there are name=1 and name=2 in my database, if I use name=2 to query. When name=2 exists, output the data r...

From [MongoDBdiscussion group] 2017-05-02 09:23:23 0  1  685

mongodb - failed to connect to server [localhost:27017] on first connect

Mongodb has been installed and started through mongo. Run the command supervisor --harmony index and report an...

From [MongoDBdiscussion group] 2017-05-02 09:23:22 0  3  2099

mongodb - Is there a way to make mongo's return value without KEY?

Because it is developed in Python, as long as a certain field in a collection is obtained, I hope that the fol...

From [MongoDBdiscussion group] 2017-05-02 09:23:20 0  3  846

spring - MongoDB connection timeout

After the Mongodb connection times out, the first database query will fail when you reconnect. It will be norm...

From [MongoDBdiscussion group] 2017-05-02 09:23:18 0  1  687

There is a "201622E2" string in the csv, but when it is imported into the mongodb database, it automatically changes to float20162200. How to deal with this problem?

1. There is a string "201622E2" in the csv, but when it is imported into the mongodb database, it au...

From [MongoDBdiscussion group] 2017-05-02 09:23:15 0  0  825

How does mongodb count the number of subdocuments?

As title. MongoDB can use the count method to count the number of documents in a collection, which is a collec...

From [MongoDBdiscussion group] 2017-05-02 09:23:13 0  0  707

Database - How to use $elemMatch to return multiple pieces of data in an array

Problem description Server environment: mongo server version 3.0.10 Content format: {code...} Query statement:...

From [MongoDBdiscussion group] 2017-05-02 09:23:11 0  1  744

html - Populate in mongoose is useless?

This is the background code. There is no problem with the item value obtained, but the value in item.lists is ...

From [MongoDBdiscussion group] 2017-05-02 09:23:10 0  1  593

mongodb3.x - mongodb data migration (mongorestore, mongoimport) error

I now want to migrate local Mongo data (50GB) to Alibaba Cloud (memory 1G). The local version is v2.4.9, and t...

From [MongoDBdiscussion group] 2017-05-02 09:23:08 0  2  1019

How to use aggregate queries in MongoDB version 2.0.6

MongoDB has Aggregat() and Pineline() pipeline queries since version 2.4, but how to use this function in vers...

From [MongoDBdiscussion group] 2017-05-02 09:23:07 0  1  826

mongodb _id is similar to uuid, which is globally unique and unique within the document.

rtrtrtrt

From [MongoDBdiscussion group] 2017-05-02 09:23:05 0  1  695