+int udb_query_check_version(udb_query_t *q, unsigned int version);
+
+int udb_query_prepare_result(udb_query_t const *q,
+ udb_query_preparation_area_t *prep_area,
+ const char *host, const char *plugin,
+ const char *db_name, char **column_names,
+ size_t column_num, cdtime_t interval);
+int udb_query_handle_result(udb_query_t const *q,
+ udb_query_preparation_area_t *prep_area,
+ char **column_values);
+void udb_query_finish_result(udb_query_t const *q,
+ udb_query_preparation_area_t *prep_area);