PL/SQL for sum/divide and multiply

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

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

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       in GeoTools is corrected (working with GeoTools community to fix).
    6. Writing PRJ and MapInfo CoordSys is done by pasting a string into appropriate export dialog box.
       Last value pasted is remembered between sessions which is useful for users who work with a single SRID.
    7. Export directory is remembered between sessions in case a user uses a standard export directory.
    8. Result sets containing MDSYS.SDO_POINT and/or MDSYS.VERTEX_TYPE can also be written to GML/KML/SHP/TAB.
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    * Copy to clipboard of SDO_GEOMETRY with M and Z values forgot has extraneous "," at the end.
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    * Bunch of performance improvements.
    * Plus (happily) others that I can't remember!If you find any bugs register a bug report at our website.
    If you want to help with testing, contact us at our website.
    My thanks for help in this release to:
    1. John O'Toole
    2. Holger Labe
    3. Sandro Costa
    4. Marco Giana
    5. Luc van Linden
    6. Pieter Minnaar
    7. Warwick Wilson
    8. Jody Garnett (GeoTools bug issues)
    Finally, when at the Washington User Conference I explained the willingness of the GeoRaptor Team to work
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    please contact the GeoRaptor team via our SourceForge website, or start a "wishlist" thread on this forum
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    regards
    Simon
    Edited by: sgreener on Jun 12, 2011 2:15 PM

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