Rows as Columns and Columns as Rows

Question

Hi,
How to print rows as columns and columns as rows?
Suppose I've the following data
colA colB
X 1
Y 2
Z 3
I want the output to be something like
X Y Z
1 2 3.
Is this possible? Please let me know.
Regards,
Jai.

Answer 1

The following assumes that there is only one value of colb for each value of cola, but allows for any number of values of cola. The script below creates the query and results below that, given the test data that you provided.
-- script:
STORE  SET saved_settings REPLACE
SET    ECHO OFF FEEDBACK OFF HEADING OFF PAGESIZE 0 VERIFY OFF WRAP ON
SPOOL  query.sql
SELECT 'SELECT MAX (DECODE (cola, ''' || cola || ''', colb)) AS "' || cola || '"'
FROM   (SELECT MIN (cola) AS cola
        FROM   test_table)
SELECT ', MAX (DECODE (cola, ''' || cola || ''', colb)) AS "' || cola || '"'
FROM   (SELECT DISTINCT cola
        FROM   test_table
        WHERE  cola >
               (SELECT MIN (cola)
                FROM   test_table))
PROMPT FROM   test_table
PROMPT /
SPOOL  OFF
START  saved_settings
START  query.sql
-- query and results:
SQL> SELECT MAX (DECODE (cola, 'X', colb)) AS "X"
  2  , MAX (DECODE (cola, 'Y', colb)) AS "Y"
  3  , MAX (DECODE (cola, 'Z', colb)) AS "Z"
  4  FROM   test_table
  5  /
         X          Y          Z
         1          2          3
SQL>