How to use this query in oracle?

Question

Hi sir,
i am using one query in sql that is
declare @date date='2012-10-25', @date1 varchar(5)
set @date1 = DATEPART(W, @date)
print @date1
in that its returning value 5 means 25 oct day is thursday so it's checking and counting from sunday in that week so the result is coming 5.
and storing in @date1
the same result i want it in oracle.
thanks

Answer 1

To_char(date,'D') conversion depends on setting of nls_territory.
So in AMERICA the week starts on sunday and in GERMANY it starts on monday.
Of cause, the solution of ranit B will work with proper setting of nls_territory.
You can check the setting of nls_parameters with
select * from v$nls_parameters;Alternatively here is a solution that is independent of nls_territory with starting day sunday:
SELECT 1+ mod(1 + TRUNC (to_date('2012-10-25','YYYY-MM-DD')) - TRUNC (to_date('2012-10-25','YYYY-MM-DD'), 'IW'),7)  AS d
FROM    dual;
D
5If you want a nls_territory independent solution with starting day monday you can use:
SELECT 1+ mod(TRUNC (to_date('2012-10-25','YYYY-MM-DD')) - TRUNC (to_date('2012-10-25','YYYY-MM-DD'), 'IW'),7)  AS d
FROM    dual;
D
4Edited by: hm on 04.10.2012 22:26