DAYOFWEEK_ISO
The DAYOFWEEK_ISO function returns an integer between 1 and 7 that represents the day of the week, where 1 is Monday and 7 is Sunday.
For another alternative, see DAYOFWEEK.
- expression
- An expression that returns a value of one of the following built-in
data types: a date, a timestamp, a character string, or a graphic
string.
If expression is a character or graphic string, its value must be a valid string representation of a date or timestamp. For the valid formats of string representations of dates and timestamps, see String representations of datetime values.
The result of the function is a large integer. If the argument can be null, the result can be null; if the argument is null, the result is the null value.
Examples
- Using the EMPLOYEE table, set the host variable DAY_OF_WEEK (INTEGER)
to the day of the week that Christine Haas (EMPNO=‘000010') started
(HIREDATE).
Results in DAY_OF_WEEK being set to 5, which represents Friday.SELECT DAYOFWEEK_ISO(HIREDATE) INTO :DAY_OF_WEEK FROM EMPLOYEE WHERE EMPNO = '000010'
- The following query returns four values: 7, 1, 7, and 1.
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