How to Convert Rows of the Columns in Multiple Columns

Question

Hi,
I have Data in one of the table of Oracle Application.
Sample Data.....
Period_Start_date Period_Type Demand
09-22-2005 1 5
09-21-2005 1 10
09-20-2005 1 5
09-19-2005 1 2
09-18-2005 1 20
09-17-2005 1 19
09-16-2005 1 3
Output Required.
Period 6 Period 5 Period 4 Period 3 Period 2 Period 1 Current
3 19 20 2 5 10 5
This need to be Done in Using SQL Statement.
On the base of Current Date enter by the User ...it will pickup last six date and Demand on that Date in Required Format.
Pls Do let me know Any more Clarification
Pls can any body Help me
Regards
Roshan

Answer 1

CREATE TABLE t1
( col1 VARCHAR2(10),
col2 VARCHAR2(100)
INSERT INTO t1 VALUES('A','123,456,789');
INSERT INTO t1 VALUES('B','012,345');
INSERT INTO t1 VALUES('C','678,901,234');
SELECT col1, col2, pos, pre, SUBSTR(col2, pre+1, pos-pre-1) token FROM (
SELECT row_num, col1, col2, decode(pos,0,LENGTH(col2)+1,pos) pos, pre FROM (
SELECT row_num, col1, col2, pos, nvl(LAG(pos) OVER (PARTITION BY col1 ORDER BY row_num),0) pre
FROM (
SELECT row_num, vw.col1, vw.col2, INSTR(vw.col2,',',1,row_num) pos
FROM (
SELECT ROWNUM row_num FROM (
SELECT LEVEL FROM dual connect by LEVEL <= 5
)) r,
(SELECT col1, col2 FROM t1) vw
WHERE pos <> 0 OR pre <> 0
i think some part it may be help u also