SYNOPSIS

          char *
          mongoc_collection_keys_to_index_string (const bson_t *keys)
             BSON_GNUC_WARN_UNUSED_RESULT;

PARAMETERS

       • keys: A bson_t. This is expected to match the form of the key field in the createIndexes
         command.

DESCRIPTION

       This function returns the canonical stringification of  a  given  key  specification.  See
       Manage Collection Indexes for example usage.

       It  is  a  programming error to call this function on a non-standard index, such one other
       than a straight index with ascending and descending.

RETURNS

       A string that should be freed with bson_free().

AUTHOR

       MongoDB, Inc

COPYRIGHT

       2017-present, MongoDB, Inc