How to export collection to CSV in MongoDB?

Question

How do you export all the records in a MongoDB collection to a .csv file?

mongoexport --host localhost --db dbname --collection name --type=csv          


        

Answer 1

Also if you want to export inner json fields use dot (. operator).

JSON record:

{
    "_id" : "00118685076F2C77",
    "value" : {
        "userIds" : [ 
            "u1"
        ],
        "deviceId" : "dev"
}

mongoexport command with dot operator (using mongo version 3.4.7):

./mongoexport --host localhost --db myDB --collection myColl --type=csv --out out.csv --fields value.deviceId,value.userIds

Output csv:

value.deviceId,value.userIds
d1,"[""u1""]"
d2,"[""u2""]"

Note: Make sure you do not export an array. It would corrupt the CSV format like field userIds shown above