title: How to easily check the return value of a function in PL/SQL Developer
body: <p>Totally newbie with database. Now I have created a function which returns a NUMBER, I just simply want to check the result of this function. The tool I am using is PL/SQL Developer but I can't find a output window or whatever. And of course I don't want to write anything into any table in this case. As a C++/C# developer I find it a bit hard to learn how to develop PL/SQL. I can't even easily see the compilation error of my function. </p>