MONGOC_COLLECTION_INSERT_MANY(3)

💅 MONGOC_COLLECTION_INSERT_MANY(3) — libmongoc 💅

okay bestie, welcome to the libmongoc manual page for MONGOC_COLLECTION_INSERT_MANY(3) — the batch-insert function that is literally here to slide a whole array of documents into a collection. no cap, it’s giving bulk-insert main character energy. ✨

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✨ SYNOPSIS ✨

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

🫶 PARAMETERS 🫶

• collection — a mongoc_collection_t, aka the collection girlie in question.
• documents — an array of pointers to bson_t. Yes, plural — it’s a whole lineup.
• n_documents — the length of documents, aka how many besties are in the array.
• reply — a maybe-NULL pointer to overwritable storage for a bson_t to contain the results.
• error — an optional location for a bson_error_t or NULL.

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

• writeConcern — construct a mongoc_write_concern_t and use mongoc_write_concern_append() to add the write concern to opts. See the example code for mongoc_client_write_command_with_opts() — it has the receipts.
• sessionId — first, construct a mongoc_client_session_t with mongoc_client_start_session(). You can begin a transaction with mongoc_client_session_start_transaction(), optionally with a mongoc_transaction_opt_t that overrides the options inherited from collection, and use mongoc_client_session_append() to add the session to opts. See the example code for mongoc_client_session_t.
• validate — construct a bitwise-or of all desired bson_validate_flags_t. Set to false to skip client-side validation of the provided BSON documents.
• comment — a bson_value_t specifying the comment to attach to this command. The comment will appear in log messages, profiler output, and currentOp output. Requires MongoDB 4.4 or later.
• ordered — set to false to attempt to insert all documents, continuing after errors — yes, even the messy ones.
• bypassDocumentValidation — set to true to skip server-side schema validation of the provided BSON documents.

🦋 DESCRIPTION 🦋

Insert documents into collection. That’s the whole vibe.

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 — lowkey magic, but documented magic. 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() — do not ghost it. 💀

😭 ERRORS 😭

Errors are propagated via the error parameter. Periodt.

💀 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 — no cap, that’s a fail.

👑 AUTHOR 👑

MongoDB, Inc

📜 COPYRIGHT 📜

2009-present, MongoDB, Inc.

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that’s the whole page, bestie! 💖 source/version: 2.5.6 · date: Oct 09, 2026 · manual: MONGOC_COLLECTION_INSERT_MANY(3) — now go insert many, fr fr 💅✨