Transpose of a Table data

Question

Hi,
i have got two tables called salary and salconfig,salary table is refering to salconfig table.
I want a result of transpose values,i.e query should display in the following format.
Empid Basic HRA DA TA
298 4500 1500 800 950
300 2300 450 800 560
my tables r
Salary
ID EMPID SALID VALUE
1 298 2 1500
2 298 1 4500
3 298 3 800
4 298 4 950
5 300 1 2300
6 300 2 450
7 300 3 800
8 300 4 560
Salconfig
ID ITEMS
1 Basic
2 HRA
3 Da
4 ta
If anybody got a query for this plz replay.Query should be a generalized one,because data in salconfig table will change dynamicaly.
Regds
Rupesh
DBA,iNetFrame

Answer 1

Right, so this is the key you want to run (this version allows for employees who don't qualify for everything):
SQL> SELECT s1.emp_id
  2         , s1.val AS basic
  3         , nvl(s2.val, 0) AS hra
  4         , nvl(s3.val, 0) AS da
  5         , nvl(s4.val, 0) AS ta
  6  FROM   ( SELECT x1.emp_id, x1.val FROM salary x1
  7             WHERE  1 = x1.sal_id ) s1
  8         , ( SELECT x2.emp_id, x2.val FROM salary x2
  9             WHERE  2 = x2.sal_id ) s2
10         , ( SELECT x3.emp_id, x3.val FROM salary x3
11             WHERE  3 = x3.sal_id ) s3
12         , ( SELECT x4.emp_id, x4.val FROM salary x4
13             WHERE  4 = x4.sal_id ) s4
14  WHERE  s1.emp_id = s2.emp_id(+)
15  AND    s1.emp_id = s3.emp_id(+)
16  AND    s1.emp_id = s4.emp_id(+)
17  /
    EMP_ID      BASIC        HRA         DA         TA
       298       4500       1500        800        950
       300       2300        450        800        560
       301       2100          0        800          0
SQL> Now what you want is to generate this query dynamically. I'm going to use a ref cursor. There are other approaches.
CREATE OR REPLACE FUNCTION get_remuneration RETURN sys_refcursor
AS
   sel_stmt VARCHAR2(32767);
   from_stmt VARCHAR2(32767);
   where_stmt VARCHAR2(32767);
   return_value  sys_refcursor;
BEGIN
   FOR i IN ( SELECT id, items FROM salconfig ORDER BY id ASC )
   LOOP
      -- assume every employee gets BASIC salary and it's always gonna be 1
      IF i.items = 'Basic'
      THEN
         sel_stmt := 'SELECT s1.emp_id'||chr(10)||'       , s1.val AS basic';
         from_stmt := 'FROM    ( SELECT x1.emp_id, x1.val FROM salary x1'||chr(10)||'             WHERE  1 = x1.sal_id ) s1';
         where_stmt := null;
      ELSE
         sel_stmt := sel_stmt||chr(10)||'       , nvl(s'||trim(i.id)||'.val, 0) AS "'||i.items||'"';
         from_stmt := from_stmt||chr(10)||',     ( SELECT x'||trim(i.id)||'.emp_id, x'||trim(i.id)||'.val FROM salary x'||trim(i.id)||chr(10)||'             WHERE  '||trim(i.id)||' = x'||trim(i.id)||'.sal_id ) s'||trim(i.id);
         IF where_stmt IS null
         THEN
            where_stmt := 'WHERE  ';
         ELSE
            where_stmt := where_stmt||chr(10)||'AND    ';
         END IF;
         where_stmt := where_stmt||'s1.emp_id = s'||trim(i.id)||'.emp_id(+)';
      END IF;
   END LOOP;
   OPEN return_value FOR sel_stmt||chr(10)||from_stmt||chr(10)||where_stmt; 
   RETURN return_value;
END;
/Smoke me a kipper, I'll be back before breakfast.
Cheers, APC