stop_cache()

select([$select = '*'[, $escape = NULL]])

or_where_not_in([$key = NULL[, $values = NULL[, $escape = NULL]]])

version()

last_query()

drop_database($db_name)

count_all_results([$table = ''[, $reset = TRUE]])

primary($table)

total_queries()

select_sum([$select = ''[, $alias = '']])