DAYOFWEEK_ISO
The DAYOFWEEK_ISO function returns an integer, in the range of 1 to 7, that represents the day of the week, where 1 is Monday and 7 is Sunday. The DAYOFWEEK_ISO function is similar to the DAYOFWEEK function.
The schema is SYSIBM.
The argument must be an expression that returns a value of one of the following built-in data types: a date, a timestamp, a character string, or graphic string.
If expression is a character or graphic string, it must not be a CLOB or DBCLOB, and its value must be a valid string representation of a date or timestamp with an actual length that is not greater than 255 bytes. For the valid formats of string representations of dates and timestamps, see String representations of datetime values.
If expression is a timestamp with a time zone, or a valid string representation of a timestamp with a time zone, the result is determined from the UTC representation of the datetime value.
The result of the function is a large integer.
The result can be null; if the argument is null, the result is the null value.
SELECT DAYOFWEEK_ISO(HIREDATE)
INTO :DAY_OF_WEEK
FROM DSN8A10.EMP
WHERE EMPNO = '000010';
The result is that DAY_OF_WEEK
is set to 5, which represents Friday. SELECT DAYOFWEEK_ISO(CAST('10/11/1998' AS DATE)),
DAYOFWEEK_ISO(TIMESTAMP('10/12/1998', '01.02')),
DAYOFWEEK_ISO(CAST(CAST('10/11/1998' AS DATE) AS CHAR(20))),
DAYOFWEEK_ISO(CAST(TIMESTAMP('10/12/1998', '01.02') AS CHAR(26)))
FROM SYSIBM.SYSDUMMY1;
DATE: DAYOFWEEK_ISO returns:
2003-12-28 '7'
2003-12-31 '3'
2004-01-01 '4'
2004-01-10 '6'
2005-01-04 '2'
2005-12-31 '7'
2006-01-01 '7'
2006-01-03 '2'
SELECT DAYOFWEEK_ISO('2003-01-02-20.00.00'),
DAYOFWEEK_ISO('2003-01-02-12.00.00-08:00'),
DAYOFWEEK_ISO('2003-01-03-05.00.00+09:00')
FROM SYSIBM.SYSDUMMY1;
For each invocation of the DAYOFWEEK_ISO
function in this SELECT statement, the result is 4 (Monday is considered
the first day of the week).When the input argument contains a time zone, the result is determined from the UTC representation of the input value. The string representations of a timestamp with a time zone in the SELECT statement all have the same UTC representation: 2003-01-02-20.00.00.