Question

I tried to do the following:

SQL> select 1>2 from dual;
select 1>2 from dual
        *
ERROR at line 1:
ORA-00923: FROM keyword not found where expected

But these are OK

SQL> select 1 from dual;

     1
----------
     1

SQL> select 2*3 from dual;

       2*3
----------
     6

How to ask Oracle to evaluate 1>2 in a simple way (without writing a separate PL/SQL function)?

Thank you.

Answer 1

Well, that is a boolean. Try this:

select (case when 1>2 then 1 else 0 end)
from dual

Oracle does not treat booleans as if they were numbers