MONGOC_COLLECTION_UPDATE_MANY(3) libmongoc MONGOC_COLLECTION_UPDATE_MANY(3) SYNOPSIS bool mongoc_collection_update_many (mongoc_collection_t *collection, const bson_t *selector, const bson_t *update, const bson_t *opts, bson_t *reply, bson_error_t *error); PARAMETERS * collection: A mongoc_collection_t. * selector: A bson_t containing the query to match documents for updating. * update: A bson_t containing the update to perform. If updating with a pipeline, a bson_t array. * reply: A maybe-NULL pointer to overwritable storage for a bson_t to con- tain 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(). * 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 col- lection, 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 docu- ments. * 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. * bypassDocumentValidation: Set to true to skip server-side schema valida- tion of the provided BSON documents. * collation: Configure textual comparisons. See Setting Collation Order, and the MongoDB Manual entry on Collation. Collation requires MongoDB 3.2 or later, otherwise an error is returned. * hint: A document or string that specifies the index to use to support the query predicate. * upsert: When true, creates a new document if no document matches the query. * let: A BSON document consisting of any number of parameter names, each followed by definitions of constants in the MQL Aggregate Expression lan- guage. * arrayFilters: An array of filters specifying to which array elements an update should apply. DESCRIPTION This function updates all documents in collection that match selector. To update at most one document see mongoc_collection_update_one(). If you pass a non-NULL reply, it is filled out with fields matchedCount, modifiedCount, and optionally upsertedId if applicable. If there is a server error then reply contains either a "writeErrors" array with one sub- document or a "writeConcernErrors" array. 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 in- valid arguments or a server or network error. A write concern timeout or write concern error is considered a failure. SEE ALSO: MongoDB update command documentation for more information on the update options. mongoc_collection_update_one() AUTHOR MongoDB, Inc COPYRIGHT 2009-present, MongoDB, Inc. 1.30.8 Aug 27, 2026 MONGOC_COLLECTION_UPDATE_MANY(3)
SYNOPSIS | PARAMETERS | DESCRIPTION | ERRORS | RETURNS | AUTHOR | COPYRIGHT
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