Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Login
Remember
Register
Ask
Q&A
All Activity
Hot!
Unanswered
Tags
Users
Ask a Question
Ask a Question
Categories
All categories
Topic[话题] (13)
Life[生活] (4)
Technique[技术] (2.1m)
Idea[创意] (3)
Jobs[工作] (2)
Others[杂七杂八] (18)
Code Example[编程示例] (0)
Recent questions tagged mongoDB
0
votes
1.4k
views
1
answer
mongodb - How to catch exception when creating MongoClient instance
I am using Mongo DB java driver to connect to mongo instance. Below is the code I am using to create ... instance is created correctly or not. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - Why do my MongooseJS ObjectIds fail the equality test?
Suppose I save and retrieve identical objects as follows var obj1, obj2; instance.save(function(err, saved) { obj1 ... . What is happening here? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.5k
views
1
answer
mongodb - Spring boot / mongo wont create index with the index annotation
I have the following: @Document(collection = "linkmetadata") public class LinkMetaData { @Indexed(unique = true) private ... there is no index.. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.5k
views
1
answer
mongodb - Concurrency in gopkg.in/mgo.v2 (Mongo, Go)
I wish to use MongoDB in webapp written in Go. Can I have one mgo.Session and use it concurrently in web app. ... that I need Copy and Close. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.5k
views
1
answer
mongodb - Mongo average aggregation query with no group
I am trying to get the average of a whole field using the aggregation framework in Mongo. However i ... . References: Mongo aggregation manual See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.3k
views
1
answer
mongodb - Get specific part of document
I'm trying Mongo db and I wonder if it's possible to only get a specific part of a document? For example I have: { " ... { x : 203, y : 102 }. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.8k
views
1
answer
mongodb - Sorting on Multiple fields mongo DB
I have a query in mongo such that I want to give preference to the first field and then the second field. ... above. Am I doing anything wrong? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.4k
views
1
answer
mongodb - mongorestore Failed: no reachable servers
I tried to restore mongo from dump but failed: mongorestore --port 27133 dump 2015-05- ... git version: 6186100ad0500c122a56f0a0e28ce1227ca4fc88 See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.5k
views
1
answer
mongodb - Importing Date-datatype using mongoimport
I have many GB of data stored in PostgreSQL database and i need those to be imported into the MongoDB. I ... to export "MongoDate" through CSV? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.3k
views
1
answer
mongodb - Best way to share database connection param with mongoose/node.js
I'm using Mongoose to manage a Mongo database. My connection file is quite simple: var mongoose = require(' ... pattern or some other method? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.5k
views
1
answer
mongodb - Sort using MongoEngine?
How do I sort the query objects in MongoEngine, like I would in a regular mongodb query? http://www. ... display/DOCS/Sorting+and+Natural+Order See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.6k
views
1
answer
mongodb - tar gzip mongo dump like MySQL
Is there anyway to tar gzip mongo dumps like you can do with MySQL dumps? For example, for mysqldumps, you can ... that didn't work. Any ideas? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - Subdocument index in mongo
What exactly happens when I call ensureIndex(data) when typical data looks like data:{name: "A",age:"B ... or something altogether different ? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.4k
views
1
answer
mongodb - How to calculate the running total using aggregate
I'm developing a simple financial app for keeping track of incomes and outcomes. For the sake of simplicity, ... solution. Thanks in advance! See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
2.0k
views
1
answer
mongodb - Does Mongoose provide access to previous value of property in pre('save')?
I'd like to compare the new/incoming value of a property with the previous value of that property (what is ... a facility for doing this? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - show dbs gives "Not Authorized to execute command" error
I've spent some time trying to figure out what is wrong but as I could not find out, I decided to ask ... I have tried uninstalling few times. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.6k
views
1
answer
mongodb c# how to work with BSON document
I've spent MANY hours looking for the answer... This is very easy in PHP but I just can't put it together in ... going to want to write data.... See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - Creating a database in Mongo: can't connect, get "connect failed"
I want to create a new database in Mongo. However, I'm having trouble connecting: :~$ mongo MongoDB shell ... to create a database. Thanks. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - Importing JSON file using mongimport, keep getting `unexpected identifier`?
I'm trying to add a JSON file to mongodb using mongoimports from terminal, here: mongoimport --db my_db --collection ... [] } ] } Thanks. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.3k
views
1
answer
mongodb - Mongoose & unique field
I have the following schema with mongoose: var SimSchema = new Schema({ msisdn : { type : String , unique : ... indexes each time. Any idea? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - Make $elemMatch (projection) return all objects that match criteria
I will use the example from here { _id: 1, zipcode: 63109, students: [ { name: "john", school: 102, age: 10 } ... ", school: 102, age: 7 }]} See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.9k
views
1
answer
mongodb check if point is in polygon
mongo 2.6 I have some amount of stored polygons. And I have a point. I what to know if this point fits any ... . I would be grateful for help. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.1k
views
1
answer
mongodb 3.4.3 Permission denied wiredtiger_kv_engine.cpp 267 error with ubuntu 16
I'm having problems lauching mongod as a service: How is it possible that it works when I do sudo ... [Install] WantedBy=multi-user.target See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.8k
views
1
answer
mongodb - replica Set mongo docker-compose
I'm trying to configure a mongodb replicaSet using docker-compose, but when I stop the master container it ... getMongo().setSlaveOk(); EOF See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.2k
views
1
answer
mongodb - Initialize data on dockerized mongo
I'm running a dockerized mongo container. I'd like to create a mongo image with some initialized data. Any ideas? See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.5k
views
1
answer
mongodb - Update multiple documents by id set. Mongoose
I wonder if mongoose has some method to update multiple documents by id set. For example: for (var i = 0, ... array. Same question for find. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
2.0k
views
1
answer
mongodb - Starting mongod fork, ERROR: child process failed, exited with error number 1
In attempting to run the command mongod --fork --logpath /var/log/mongodb.log On a amazon ec2 32 bit ... file is created in the process. See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
0
votes
1.4k
views
1
answer
mongodb Failed: error connecting to db server: no reachable servers
I installed mongodb in Ubuntu14.04 server I was not able to connect to mongodb via "mongoimport", "mongodump ... #keyFile=/path/to/keyfile See Question&Answers more detail:os...
asked
Oct 24, 2021
in
Technique[技术]
by
深蓝
(
71.8m
points)
mongodb
Page:
« prev
1
2
3
4
5
6
7
8
9
10
...
26
next »
Ask a question:
Welcome to OStack Knowledge Sharing Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question
Just Browsing Browsing
[1] ajax - JQuery appended data is not available at POST request
[2] 使用prerender-spa-plugin后初始加载页面有轮播图一屏幕显示多个并且加载过程有白屏
[3] Angular directive not updating ngModel
[4] git bash中执行npm run dev提示node不可用
[5] 小程序 navigateTo:fail webview count limit exceed
[6] ubuntu - MQTT Configuration File Mosquitto on Azure Ubunutu VM
[7] threejs可以加载stp文件嘛?
[8] Vue:Duplicate keys detected This may cause an update error.
[9] 用Anaconda的sypder,一天上传了400mb数据,是在上传什么?
[10] azure - x5t JWT Thumbprint Python Conversion
2.1m
questions
2.1m
answers
60
comments
57.0k
users
Most popular tags
javascript
python
c#
java
How
android
c++
php
ios
html
sql
r
c
node.js
.net
iphone
asp.net
css
reactjs
jquery
ruby
What
Android
objective
mysql
linux
Is
git
Python
windows
Why
regex
angular
swift
amazon
excel
algorithm
macos
Java
visual
how
bash
Can
multithreading
PHP
Using
scala
angularjs
typescript
apache
spring
performance
postgresql
database
flutter
json
rust
arrays
C#
dart
vba
django
wpf
xml
vue.js
In
go
Get
google
jQuery
xcode
jsf
http
Google
mongodb
string
shell
oop
powershell
SQL
C++
security
assembly
docker
Javascript
Android:
Does
haskell
Convert
azure
debugging
delphi
vb.net
Spring
datetime
pandas
oracle
math
Django
联盟问答网站-Union QA website
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
在这了问答社区
DevDocs API Documentations
Xstack问答社区
生活宝问答社区
OverStack问答社区
Ostack问答社区
在这了问答社区
在哪了问答社区
Xstack问答社区
无极谷问答社区
TouSu问答社区
SQlite问答社区
Qi-U问答社区
MLink问答社区
Jonic问答社区
Jike问答社区
16892问答社区
Vigges问答社区
55276问答社区
OGeek问答社区
深圳家问答社区
深圳家问答社区
深圳家问答社区
Vigges问答社区
Vigges问答社区
在这了问答社区
DevDocs API Documentations
广告位招租
...