This MSAccess tutorial explains how to use the Access Weekday function with syntax and examples.
The Microsoft Access Weekday function returns a number representing the day of the week (a number from 1 to 7) given a date value.
The syntax for the Weekday function in MS Access is:
Weekday ( date_value, [firstdayofweek] )
firstdayofweek is optional. It determines what day is to be the first day of the week. It can be any of the following values:
|vbUseSystem||0||Use the NLS API settings|
|vbSunday||1||Sunday (default used)|
If this parameter is omitted, the Weekday function assumes that the first day of the week is Sunday.
Please note that if you use the Weekday function in a query, you'll have to use the numeric value (ie: 0 to 7) for the firstdayofweek parameter. You can only use the constant equivalent (ie: vbSunday to vbSaturday) in VBA code.
The Weekday function can be used in the following versions of Microsoft Access:
Let's look at how to use the Weekday function in MS Access:
Weekday (#22/11/2003#) Result: 7 Weekday (#22/11/2003#, vbThursday) Result: 3 Weekday (#22/11/2003#, 5) Result: 3 Weekday (#01/01/1998#) Result: 5
The Weekday function can be used in VBA code in Microsoft Access.
Dim LWeekday As Integer LWeekday = Weekday(#12/03/2001#, vbSunday)
In this example, the variable called LWeekday would now contain the value of 2.
You can also use the Weekday function in a query in Microsoft Access.
In this query, we have used the Weekday function as follows:
The first Weekday function will extract the weekday value (1 to 7) from the date value 12/03/2001, assuming that Sunday is the first day of the week (1 as the second parameter). The results will be displayed in a column called Expr1. You can replace Expr1 with a column name that is more meaningful.
The results would now be displayed in a column called WeekdayValue.
The second Weekday function will extract the weekday value from the CategoryDate field, assuming that the first day of the week is Tuesday (3 as the second parameter). The results will be returned in a column called Expr2.
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