Query to delete two weeks old data.

Question

Hi Experts,
I want to delete the records grater than two weeks old.
From Saturday to Friday we are considering as Week.
P_ID  CREATED_DT
105    28/AUG/2013
106    29/AUG/2013
107    30/AUG/2013
108    31/AUG/2013
109    01/SEP/2013
110    02/SEP/2013
111    03/SEP/2013
112    04/SEP/2013
113    05/SEP/2013
114    06/SEP/2013
115    07/SEP/2013
116    08/SEP/2013
117    09/SEP/2013
118    10/SEP/2013
119    12/SEP/2013
From 28/AUG/2013 to 30/AUG/2013 records has to be deleted becuase these records are two weeks old.
From 31/AUG/2013 to 06/SEP/2013 records belongs to one week and from 07/SEP/2013 to 13/SEP/2013 belongs to another week.
Today is 12/SEP/2013 so from 06/SEP/2013 to 12/SEP/2013 should be existed in the table.
Once date changed to 13/SEP/2013 then from 31/AUG/2013 to 06/SEP/2013 records has to be deleted.
I am posting table and insert scripts.
CREATE TABLE process_data(p_id NUMBER,CREATED_DT DATE);
INSERT INTO process_data VALUES(TO_DATE('28/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('29/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('30/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('31/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('01/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('02/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('03/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('04/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('05/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('06/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('07/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('08/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('09/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('10/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('11/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('12/SEP/2013','DD/MON/YYYY');
Please help me how to implement this logic.
Thanks.

Answer 1

976208 wrote:
Hi Experts,
I want to delete the records grater than two weeks old.
From Saturday to Friday we are considering as Week.
P_ID  CREATED_DT
105    28/AUG/2013
106    29/AUG/2013
107    30/AUG/2013
108    31/AUG/2013
109    01/SEP/2013
110    02/SEP/2013
111    03/SEP/2013
112    04/SEP/2013
113    05/SEP/2013
114    06/SEP/2013
115    07/SEP/2013
116    08/SEP/2013
117    09/SEP/2013
118    10/SEP/2013
119    12/SEP/2013
From 28/AUG/2013 to 30/AUG/2013 records has to be deleted becuase these records are two weeks old.
From 31/AUG/2013 to 06/SEP/2013 records belongs to one week and from 07/SEP/2013 to 13/SEP/2013 belongs to another week.
Today is 12/SEP/2013 so from 06/SEP/2013 to 12/SEP/2013 should be existed in the table.
Once date changed to 13/SEP/2013 then from 31/AUG/2013 to 06/SEP/2013 records has to be deleted.
I am posting table and insert scripts.
CREATE TABLE process_data(p_id NUMBER,CREATED_DT DATE);
INSERT INTO process_data VALUES(TO_DATE('28/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('29/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('30/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('31/AUG/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('01/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('02/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('03/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('04/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('05/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('06/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('07/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('08/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('09/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('10/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('11/SEP/2013','DD/MON/YYYY');
INSERT INTO process_data VALUES(TO_DATE('12/SEP/2013','DD/MON/YYYY');
Please help me how to implement this logic.
Thanks.
From 31/AUG/2013 to 06/SEP/2013 records belongs to one week and from 07/SEP/2013 to 13/SEP/2013 belongs to another week.
What does that have to do with the problem?
You want to delete (daily?) anything over two weeks old.  That's 14 days.  That's sysdate - 14.
delete from mytable where mydatecol < sysdate -14;
It's so simple I'm afraid I must be missing some requirement that you haven't articulated.