Deleting records based on date with timestamp

Question

Hi there,
In continuation from my earlier Query. Multiple reccord have inadvertantly been inserted in the LOAN_TXN table. I want to delete all the records, except one, based on date with timestamp.
CREATE TABLE LOAN_TXN
TXN_DATE                     DATE,
BALANCE          NUMBER(10,2),
CODE          VARCHAR2(1),
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '02/15/2010 11:00:00 AM', 'MM/DD/YYYY HH:MI:SS AM'), 250000, 'D');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '03/31/2010 11:59:59 AM', 'MM/DD/YYYY HH:MI:SS AM'), 250000, 'B');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '05/14/2010 11:25:00 AM', 'MM/DD/YYYY HH:MI:SS AM'), 500000, 'D');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '06/30/2010 12:15:00 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '08/02/2010 10:45:26 AM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '09/08/2010 02:10:17 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '10/27/2010 04:25:20 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '11/09/2010 10:15:55 AM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '12/29/2010 03:10:20 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '01/12/2011 01:11:15 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '02/11/2011 12:11:48 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '03/31/2011 11:59:59 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '03/31/2011 11:59:59 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '03/31/2011 11:59:59 PM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '03/31/2011 11:00:00 AM', 'MM/DD/YYYY HH:MI:SS AM'), 4000, 'R');
INSERT INTO LOAN_TXN ( TXN_DATE, BALANCE, CODE) VALUES (TO_Date( '03/31/2011 11:59:59 AM', 'MM/DD/YYYY HH:MI:SS AM'), 460000, 'B');I want to delete mutiple records, except one, with code 'R' and TXN_DATE = '03/31/2011 11:59:59 PM' How do I do that ?

Answer 1

user3308033 wrote:
I think your query would delete all the duplicate records. Keeping one, I just want to delete mutiple records with timestamp : 11:59:59.
DELETE FROM loan_txn
WHERE rowid != (
                 SELECT  MIN(rowid)
                   FROM  loan_txn
                   WHERE txn_date = TO_DATE('03/31/2011 11:59:59 PM','MM/DD/YYYY HH:MI:SS AM')
                     AND code = 'R'
    AND txn_date = TO_DATE('03/31/2011 11:59:59 PM','MM/DD/YYYY HH:MI:SS AM')
    AND code = 'R'
/SY.