DROP FUNCTION IF EXISTS fn_classes_teacher_num;
CREATE FUNCTION fn_classes_teacher_num(id_in varchar(20))
RETURNS INTEGER
READS SQL DATA
BEGIN
RETURN
(SELECT num_of_teacher from classes wh
最近在创建function时，系统提示以下错误：
This function has none of DETERMINISTIC, NO SQL,
or READS SQL DATA in its declaration and binary logging is enabled(you might want to use the less s
