Hi Yujun,
I guess this thread is related with user defined function does not work in select statement. I just tested a simple column table based on your UDF and it worked on Rev. 91.
create column table test (name nvarchar(100));
insert into test values ('a');
drop function FN_TEST2;
create function FN_TEST2
(vInput nvarchar(100))
returns vReturn nvarchar(100)
LANGUAGE SQLSCRIPT
as
begin vReturn := 'Hello_' || vInput;
end;
--------------------
select FN_TEST2('abc123') from dummy;
----> It works. Output: Hello_abc123
--------------------
select FN_TEST2(name) from test;
----> It works. Output: Hello_a
Best regards,
Wenjun