MONGOC_COLLECTION_DELETE_ONE - Online Linux Manual PageSection : 3
Updated : Feb 04, 2021
Source : 1.17.4
Note : libmongoc

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NAMEmongoc_collection_delete_one − mongoc_collection_delete_one()

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SYNOPSIS bool mongoc_collection_delete_one (mongoc_collection_t *collection, const bson_t *selector, const bson_t *opts, bson_t *reply, bson_error_t *error);

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PARAMETERS • collection: A mongoc_collection_t​. • selector: A ­bson_t containing the query to match documents. • 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: • 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 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. • 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.

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DESCRIPTIONThis function removes at most one document in the given collection that matches selector​. To delete all matching documents, use mongoc_collection_delete_many​. 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()​.

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ERRORSErrors are propagated via the error parameter.

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

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AUTHORMongoDB, Inc

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COPYRIGHT2017-present, MongoDB, Inc 0

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Johanes Gumabo

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