Insert duplicate documents into MongoDB

[Praneeth Tvss.]

Hi EveryOne,

I have a record present in MongoDB with the following format:

```

{
    _id : 1,

    name: Praneeth,

    age: 22

}

```

- Now I want to add one more record from the file. In that file, we are having same "_id" for the record. We want to load this file using `mongoimport`.
```

{

    _id: 1,

    name: Tvss,

    age: 22

}

```

- When we try to load the new data, we are getting duplicate key Error, because {_id: 1} already exists.
- How can we load the data to Mongo with same "_id"(duplicating)?

Can anyone please help me with this issue ?.
If anyone couldn't able to understand the issue, please let me know...

Thanks,
Praneeth.

[Stephen Steneker]

On Friday, 16 March 2018 21:53:00 UTC+11, Praneeth Tvss. wrote:

- When we try to load the new data, we are getting duplicate key Error, because {_id: 1} already exists.

Hi Praneeth,

This is an expected error: the _id field is the primary key for a document and must be unique.

- How can we load the data to Mongo with same "_id"(duplicating)?

Since duplicate values are not allowed in the _id field, you should either make your values unique or rename the field in your data file before importing. For example, you could rename your field to source_id and allow MongoDB to generate a unique ObjectID for the required _id field.

Regards,

Stennie

[Praneeth Tvss.]

Hi Stennie,

Thank you very much.
It helps me.

Thanks,

Praneeth.