Will Oracle SQL Developer version 19.2 and Oracle APEX version 4.2 support each other when making changes to application? - version

Question

My query in SQL Developer is executing fine, but when I implement in APEX, the application won't even run. So just wondering if Developer version and APEX version are compatible.

Answer 1

There is no relationship between SQL Developer and your APEX application, at least as far as the scenario you're describing.
It would help to show your query, show your application not running, i.e. error messages encountered when running the query.
If you wanted, you could test the query in the APEX SQL Workshop.
SQL Developer runs its queries through a jdbc driver as a client application. APEX SQL runs inside the database via stored procedures.

Answer 2

Based on a comment you posted: what you executed in Apex' SQL Workshop is an anonymous PL/SQL block.
By the way, what is a? You never declared it.
How to transform it to a function? For example:
create or replace function f_test (a number)
return varchar2 is
begin
return case when a < 10 or a > 57 then 'Value is not in valid range'
else null
end;
end;
/
Call it as e.g. (in function's body)
return f_test(:P1_DEPTNO);
Aha, yet another comment: that is supposed to be a validation. Its type should be "PL/SQL function returning error text":
return case when :P1_DEPTNO < 10 or :P1_DEPTNO > 57
then 'Value is not in valid range'
else null
end;