PL/SQL for sum/divide and multiply

Question

Hi..
I am tyring to do a small computation..I am not good at PL/SQL..Can u plz help..Also plz correct me if i am wrong - in the source used it shud say "Always, replacing....." and Source Type - PL?SQL Expression or Function,correct?
the function is
((Item A + Item B + Item C) / (Item + Item Y = Item Z)) * Item M..
The net result is displayed in an Item K
Thank you
Regards,
R

Answer 1

ATD is correct that you should always do in SQL what you can ... in other words PL/SQL should never be the first choice.
But it appears from what you've written that you may need a function so here's some help.
You formula is:
((Item A + Item B + Item C) / (Item + Item Y = Item Z)) * Item M.
So you have 6 inputs A, B, C, M, X, and Y (Z making no sense as written) and they all seem be numeric. So:
CREATE OR REPLACE FUNCTION myfunc (A NUMBER, B NUMBER, C NUMBER, M NUMBER, X NUMBER, Y NUMBER) RETURN NUMBER IS
BEGIN
  RETURN (((A + B + C) / (X + Y)) * M);
END myfunc;
/Should work just fine although it is so simplistic I can think of many ways it could be vastly improved. If it isn't what you want it is close enough you can alter it for your purposes.
What you have asked is about as simple as one can get. I would expect my students, after three hours of class, to be able to write it. Which means you really need to make taking a PL/SQL class important in your life.
For self study try these:
http://www.psoug.org/reference/anonymous_blocks.html
http://www.psoug.org/reference/functions.html