- MongoDB C Driver 1.13.1 »
- API Reference »
- mongoc_client_t

# mongoc_client_command()

## Synopsis

    mongoc_cursor_t *
    mongoc_client_command (mongoc_client_t *client,
                           const char *db_name,
                           mongoc_query_flags_t flags,
                           uint32_t skip,
                           uint32_t limit,
                           uint32_t batch_size,
                           const bson_t *query,
                           const bson_t *fields,
                           const mongoc_read_prefs_t *read_prefs);

This function is superseded by mongoc_client_command_with_opts(), mongoc_client_read_command_with_opts(), mongoc_client_write_command_with_opts(), and mongoc_client_read_write_command_with_opts().

## Description

This function creates a cursor which will execute the command when mongoc_cursor_next() is called on it. The client’s read preference, read concern, and write concern are not applied to the command, and mongoc_cursor_next() will not check the server response for a write concern error or write concern timeout.

If mongoc_cursor_next() returns `false`, then retrieve error details with mongoc_cursor_error() or mongoc_cursor_error_document().

## Parameters

- `client`: A mongoc_client_t.
- `db_name`: The name of the database to run the command on.
- `flags`: Unused.
- `skip`: Unused.
- `limit`: Unused.
- `batch_size`: Unused.
- `query`: A `bson_t` containing the command specification.
- `fields`: Unused.
- `read_prefs`: An optional mongoc_read_prefs_t. Otherwise, the command uses mode `MONGOC_READ_PRIMARY`.

## Returns

A mongoc_cursor_t.

The cursor should be freed with mongoc_cursor_destroy().

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