Assistance on Division Function

Question

Hello, I am new to PL/SQL. Is there a proper structure or procedure to take for example: (Total column 1) minus (Total Column 2) all divided by (Total Column 1)? Is the coding written the same way as SQL? Do I need to be worried about data structure? Thanks for your help in advance.
Andy

Answer 1

Thanks for the quick reply William H.
Question, here is the current code I am to update. The "Present" formula is supposed to calculate specified time period and supplier, and I am to change the formula (Total Lot 01 and 08 types) minus (Total Inspection lots 01 and 08 of UD Code A080 etc..) all divided by (Total Inspection 01 and 08) to (Inspection type 01) minus (Total Inspection lot type 01, 08, UD Code 080 etc..) all divided by (Inspection type 01.) My question is I do not see any calculations within this procedure. I see the totals being displayed. Am i missing something? I dont understand how I can simply change the formula when I do not see a formula to start out with.
Procedure PopulateQualitySummaryTable
     Is
          -- Method variables
v_tableName Varchar2 (100) := 'QUALITYSUMMARY';
v_tableCount Number (1);
v_sql Varchar2 (4000);
     Begin
          -- Does this table exist
SELECT count (*)
INTO v_tableCount
FROM user_tables
WHERE table_name = v_tableName;
-- Drop the table if it exists
IF v_tableCount = 1 THEN
EXECUTE IMMEDIATE 'DROP TABLE ' || v_tableName;
End If;
-- Create sql statement to create table
v_sql := 'CREATE TABLE ' || v_tableName || ' AS
SELECT NVL (a.Defects, 0) Exceptions, b.Total Total,
b.period, b.plant, b.vendor
FROM (SELECT count (*) Defects, period, plant, vendor
          FROM inspectiondata
WHERE (insplottype = ''01'' Or insplottype = ''08'') And
(udcode = ''A050'' Or udcode = ''A080'' Or udcode = ''R020'' Or udcode = ''R040'')
GROUP BY period, plant, vendor)
     a,
     (SELECT count (*) Total, period, plant, vendor
          FROM inspectiondata
     GROUP BY period, plant, vendor)
     b
WHERE a.period (+) = b.period And
a.plant (+) = b.plant And
a.vendor (+) = b.vendor';
-- Create table
EXECUTE IMMEDIATE v_sql;
End PopulateQualitySummaryTable;