SQL/MX 2.x Reference Manual (H06.04+)

SQL/MX Functions and Expressions
HP NonStop SQL/MX Reference Manual—540440-003
9-42
DAYOFWEEK Function
DAYOFWEEK Function
The DAYOFWEEK function converts a DATE or TIMESTAMP expression into an
INTEGER value in the range 1 through 7 that represents the corresponding day of the
week. The value 1 represents Sunday, 2 represents Monday, and so forth.
DAYOFWEEK is an SQL/MX extension.
datetime-expression
is an expression that evaluates to a datetime value of type DATE or TIMESTAMP.
See Datetime Value Expressions on page 6-39.
Examples of DAYOFWEEK
•
Return an integer that represents the day of the week from the START_DATE
column in the PROJECT table:
SELECT start_date, ship_timestamp, DAYOFWEEK(start_date)
FROM persnl.project
WHERE projcode = 1000;
Start/Date Time/Shipped (EXPR)
---------- -------------------------- ------
1996-04-10 1996-04-21 08:15:00.000000 4
The value returned is 4, representing Wednesday. The week begins on Sunday.
DAYOFWEEK (datetime-expression)