select * from cms_users limit 0, 3
insert into cms_users(user_code, user_name) values('9006', 'nono')
delete from cms_users where user_id = 1
update cms_users set user_name = 'ko' where user_id = 2
truncate table cms_users
select * from app_users where user_name like 'j%'
select date_format(now(),'%Y-%m-%d %H:%i:%s')