I have a Database {Databasename: Home} with 2 collections i.e
我有一个数据库{Databasename：Home}，有2个集合，即
Home1 and Home2 //Two existing collection
Now I want to copy Home1 Table entirely and paste it on the same database with new name i.e Home3
Is it Possible to do on MongoDB. I am using Mongoose for my project.
是否可以在MongoDB上进行。我正在使用Mongoose进行我的项目。
And one more thing that is it possible to this job through Cron Job on Nodejs so that it will be a fully automated process.
还有一件事是通过Nodej上的Cron Job可以完成这项工作，这样它就是一个完全自动化的过程。
Any help is really Appreciated.
任何帮助都是真正的赞赏。
2 个解决方案
#1
0
You can achieve it with $out (aggregation pipeline stage).
您可以使用$ out（聚合管道阶段）实现它。
Example query:
示例查询：
db.getCollection('Home1').aggregate([{ $out : "Home3" }]);
#2
0
You can copy documents from one collection to another, using collection method copyTo()
您可以使用集合方法copyTo（）将文档从一个集合复制到另一个集合
Using mongo shell command it would be like: db.yourCollectionName.copyTo("newCollection")
使用mongo shell命令就像：db.yourCollectionName.copyTo（“newCollection”）
And most probably the same syntax is used in mongoose as well
并且很可能在mongoose中也使用相同的语法
#1
0
You can achieve it with $out (aggregation pipeline stage).
您可以使用$ out（聚合管道阶段）实现它。
Example query:
示例查询：
db.getCollection('Home1').aggregate([{ $out : "Home3" }]);
#2
0
You can copy documents from one collection to another, using collection method copyTo()
您可以使用集合方法copyTo（）将文档从一个集合复制到另一个集合
Using mongo shell command it would be like: db.yourCollectionName.copyTo("newCollection")
使用mongo shell命令就像：db.yourCollectionName.copyTo（“newCollection”）
And most probably the same syntax is used in mongoose as well
并且很可能在mongoose中也使用相同的语法