union不能用order by，会报错
select t1.*
from person t1
where t1.id='1c06b213661149619c3e0dcf46f4b14b'
order by t1.create_time
union all
select t1.*
from person t1
where t1.id!='1c06b213661149619c3e0dcf46f4b14b'
order by t1.create_time ;
这样是会报错的，union不能和order by结合使用。