Day_Of_Week

Syntax: Day_Of_Week(ccyymmdd_DateStr)

Argument:

• ccyymmdd_DateStr is a day expressed as ccyymmdd, where ccyy is the year, mm is the month, and dd is the day. A value of 20180410 represents April 10, 2018.

Return Type: Integer

Description: Returns a number representing the day of the week: 1 = Sunday, 2 = Monday, 3 = Tuesday, 4 = Wednesday, 5 = Thursday, 6 = Friday, and 7 = Saturday.

Example:

ACCT_UDVDOW = Day_Of_Week(CRTRAN25.transactionDate);
   if ACCT_UDVDOW = 1
   then... ;
   if ACCT_UDVDOW = 2
   then... ; 

The previous rule performs different actions depending on the day of the week on which an authorization takes place. It begins by creating a UDV variable, DOW, for the day of the week.

The Day_Of_Week function converts the date contained in the function to a number representing the day of the week. Then any number of if-then statements can link different actions to the possible values of DOW: if DOW = 1 (Sunday) then do one thing, if DOW = 2 (Monday) then do another, and so on.