with tiaojian as (
select 
tb.user_id,
date(log_time) as pw,
row_number()over(partition by tb.user_id order by date(log_time)  asc ) as pn
from register_tb rb inner join login_tb tb 
on rb.user_id=tb.user_id
)

select 
distinct
user_id
from tiaojian 
group by user_id,subdate(pw,pn)
having count(user_id)>=3
order by user_id