如何在一个集合中使用mongodump

How to use mongodump to move only 1 collection from one database to another?

如何使用mongodump只将一个集合从一个数据库移动到另一个数据库?

How should I use the command and its options?

如何使用该命令及其选项?

3 个解决方案

#1

I think it's just:

我认为这只是:

mongodump --db=<old_db_name> --collection=<collection_name> --out=data/

mongorestore --db=<new_db_name> --collection=<collection_name> data/<db_name>/<collection_name>.bson

Also see docs here and here.

也可以在这里和这里看到文档。

Btw, the other way to move the collection from one database to another is to use renameCollection:

顺便说一句，将集合从一个数据库移动到另一个数据库的另一种方法是使用renameCollection:

db.runCommand({renameCollection:"<old_db_name>.<collection_name>",to:"<new_db_name>.<collection_name>"})

Here's some related SO threads:

这里有一些相关的线程:

• How to copy a collection from one database to another in MongoDB
• 如何在MongoDB中将集合从一个数据库复制到另一个数据库
• How to use the dumped data by mongodump?
• 如何使用mongodump的转储数据?

Hope that helps.

希望有帮助。

#2

Taking database (document) dump (backup)

mongodump --host <hostname-of-mongoserver> --db <db-name> --username <dbuser-name> --password <password> --gzip --out </backup/location/>

Taking collection dump (backup)

mongodump --host <hostname-of-mongoserver> --db <db-name> --collection <collection-name> --username <dbuser-name> --password <password> --gzip --out </backup/location/>

mongodump documentation

mongodump文档

#3

Very basic commands for dump mongodb.

转储mongodb的非常基本的命令。

1. Dump all collection

   转储所有集合

   mongodump
   

2. Dump specific database only

   转储特定数据库只

   mongodump --db=DB_NAME
   

3. Dump database with username & password

   用用户名和密码转储数据库

   mongodump -u=USERNAME -p=PASSWORD --db=DB_NAME
   

4. Dump from another host

   从另一个主机转储

   mongodump --host HOST_NAME/HOST_IP --port HOST_PORT  --out {YOUR_DIRECTOTY_PATH} --db=DB_NAME
   

Only able to dump from another host when they allow it.

只能在他们允许的时候从另一个主机上转储。