group_end()

first_row([$type = 'object'])

escape_identifiers($item)

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

group_start()

affected_rows()

result_object()

$this->db->call_function(); This function enables you to call PHP database functions that are not natively included in CodeIgniter,

row([$n = 0[, $type = 'object']])

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