Question

I got a headache on writing an oracle sql. When my sql returns 0 row, I need it returns “empty” instead of returning 0 rows. For example,

select name from employee where id=1;

Result:

0 rows selected

I need it returns like this:

Empty

1 row selected

Since there is no such record in db, is there a way to do that? I do need it return a value. Thank you!

Answer 1

select name 
from employee 
where id=1
union all
select 'Empty'
from dual
where not exists (select 1 from employee where id=1)