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- cloneCollection
cloneCollection¶
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Definition¶
- cloneCollection¶
Copies a collection from a remote mongod instance to the current mongod instance. cloneCollection creates a collection in a database with the same name as the remote collection’s database. cloneCollection takes the following form:
{ cloneCollection: "<namespace>", from: "<hostname>", query: { <query> } }
cloneCollection has the following fields:
Field Type Description cloneCollection string The namespace of the collection to rename. The namespace is a combination of the database name and the name of the collection. from string The address of the server to clone from. query document Optional. A query that filters the documents in the source collection that cloneCollection will copy to the current database.
Behavior¶
mongos does not support cloneCollection.
cloneCollection cannot be used if the from server has authorization enabled.
Example¶
db.runCommand( { cloneCollection: "users.profiles",
from: "mongodb.example.net:27017",
query: { 'active' : true }
} )
This operation copies the profiles collection from the users database on the server at mongodb.example.net. The operation only copies documents that satisfy the query { 'active' : true }.