FIND_IN_SET处理mysql in的字符串结果
select btree from utreemap u
where btree is not null
and FIND_IN_SET(u.id,(SELECT btree from utreemap where id=123))
order by FIND_IN_SET(u.id,(SELECT btree from utreemap where id=123))
select btree from utreemap u
where btree is not null
and FIND_IN_SET(u.id,(SELECT btree from utreemap where id=123))
order by FIND_IN_SET(u.id,(SELECT btree from utreemap where id=123))