# mongoc_collection_insert_many()¶

## Synopsis¶

bool
mongoc_collection_insert_many (mongoc_collection_t *collection,
const bson_t **documents,
size_t n_documents,
const bson_t *opts,
bson_error_t *error);


## Parameters¶

• collection: A mongoc_collection_t.
• documents: An array of pointers to bson_t.
• n_documents: The length of documents.
• reply: Optional. An uninitialized bson_t populated with the insert result, or NULL.
• error: An optional location for a bson_error_t or NULL.

opts may be NULL or a BSON document with additional command options:

## Description¶

Insert documents into collection.

To insert a single document, see mongoc_collection_insert_one().

For any document that does not have an “_id” field, a bson_oid_t will be generated locally and added to the document. If you must know the inserted document’s _id, generate it in your code and include it in the document. The _id you generate can be a bson_oid_t or any other non-array BSON type.

If you pass a non-NULL reply, it is filled out with an “insertedCount” field. If there is a server error then reply may contain a “writeErrors” array and/or a “writeConcernErrors” array (see Bulk Write Operations for examples). The reply must be freed with bson_destroy().

## Errors¶

Errors are propagated via the error parameter.

## Returns¶

Returns true if successful. Returns false and sets error if there are invalid arguments or a server or network error.

A write concern timeout or write concern error is considered a failure.