Order by to_char(month) for a chart

Question

Hi There,
I was using the following query to display a chart item in APEX. I was wondering what would be the best way to order by the output so that the months show up in an ordered way.
(code)
SELECT NULL
, TO_CHAR(MA.DATE_LOGGED,'Mon')
, COUNT(*) Parts
FROM
table1 A ma, table2 el
WHERE
MA.ERROR = EL.ERROR
AND MA.ERROR IS NOT NULL
AND EL.ERROR_TYPE = 'P'
GROUP BY TO_CHAR(MA.DATE_LOGGED,'Mon')
ORDER BY 2
I am on 11g.
Thanks,
Sun                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               

Answer 1

Hope below helps:
create table testval(col1 date,col2 varchar(10),col3 varchar2(1));
SET DEFINE OFF;
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('06/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('07/02/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('08/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('01/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('02/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('03/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('04/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('05/01/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
Insert into TESTVAL
   (COL1, COL2, COL3)
Values
   (TO_DATE('06/03/2012 00:00:00', 'MM/DD/YYYY HH24:MI:SS'), 'err1', 'P');
COMMIT;
select col1,to_char(col1,'mon'),col2,col3 from testval
order by to_char(col1,'mm') ;
TO_CHAR(COL1,'MON')|COL2|COL3
jan|err1|P
feb|err1|P
mar|err1|P
apr|err1|P
may|err1|P
jun|err1|P
jun|err1|P
jul|err1|P
aug|err1|PRegards,
Vijay.