Szathmáry László honlapja @ DEIK

MongoDB Commands

Dump a database:

mongodump -d <db_name>

Where <db_name> is the name of the database you want to dump.

Restore a database:

mongorestore [--drop]

Supposing you are in the directory where the folder dump/ is located.

If you specify --drop, then collections before restoration will be deleted in the database (and they'll be re-created from scratch during the restoration process).

Restore a specific collection:

mongorestore [--drop] -d <db_name> -c <coll_name> dump/file.bson

# concrete example:
# mongorestore --drop -d movies -c movieDetails dump/movieDetails.bson

If you specify --drop, then the collection will be deleted before restoring it. Meaning of the example above: "take the content of dump/movieDetails.bson, and restore it in the database movies, in the collection movieDetails".

Import from a JSON file #1:

Suppose you have a JSON file, where each line contains a document:

{ name: "Widget 1", desc: "This is Widget 1" }
{ name: "Widget 2", desc: "This is Widget 2" }

You can import it the following way:

mongoimport [--drop] -d <db-name> -c <coll-name> --type json location/of/input.json

Import from a JSON file #2:

Suppose you have a JSON file, where you have an array of documents:

[
{
"color": "red",
"value": "#f00"
},
{
"color": "green",
"value": "#0f0"
}
]

You can import it the following way:

mongoimport [--drop] -d <db-name> -c <coll-name> --type json --jsonArray location/of/input.json

Make sure you are using the --jsonArray flag!