usersfunction 这个字段中含有非数字项
select * from ect_function
where to_char(functionid) in(select usersfunction from ect_usersfunction)
select * from ect_function
where to_char(functionid) in(select usersfunction from ect_usersfunction)
select * from ect_function where functionid in
(select to_number(usersfunction) from ect_usersfunction)