Provided by: libmongoc-doc_1.9.2+dfsg-1build1_all 

NAME
mongoc_collection_delete_many - mongoc_collection_delete_many()
SYNOPSIS
bool
mongoc_collection_delete_many (mongoc_collection_t *collection,
const bson_t *selector,
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.
• opts: A bson_t containing additional options.
• reply: Optional. An uninitialized bson_t populated with the delete 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:
• readConcern: Construct a mongoc_read_concern_t and use mongoc_read_concern_append to add the read
concern to opts. See the example code for mongoc_client_read_command_with_opts.
• 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: Construct a mongoc_client_session_t with mongoc_client_start_session and use
mongoc_client_session_append to add the session to opts. See the example code for
mongoc_client_session_t.
• validate: Set to false to skip client-side validation of the provided BSON documents.
• bypassDocumentValidation: Set to true to skip server-side schema validation of the provided BSON
documents.
• collation: Configure textual comparisons. See Setting Collation Order, and the MongoDB Manual entry on
Collation.
• serverId: To target a specific server, include an int32 "serverId" field. Obtain the id by calling
mongoc_client_select_server, then mongoc_server_description_id on its return value.
DESCRIPTION
This function removes all documents in the given collection that match selector.
To delete at most one matching document, use mongoc_collection_delete_one.
If you pass a non-NULL reply, it is filled out with the field "deletedCount". If there is a server error
then reply contains either a "writeErrors" array with one subdocument 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 invalid arguments or a server or
network error.
AUTHOR
MongoDB, Inc
COPYRIGHT
2018, MongoDB, Inc
1.9.3-dev Feb 05, 2018 MONGOC_COLLECTION_DELETE_MANY(3)