Parameters, Defaults, And Datatypes...oh MY!

Nov 28, 2007



Thanks in advance for fielding my question!

I have parameters (type=datetime) on a report whose values are populated from a query. This query just pulls a list of all the dates (all Sunday dates) in a table. I have the parameter set up to have the date as the value and then a string representation of the value as the label (ie 2007-11-25) to make it easier for the user.

I want to set up a default for this parameter that essentially takes today's date and calculates the previous Sunday's date so the parameter drop down defaults to last Sunday's date.

My expression works fine just to display it on the report in a text box. It calculates and displays last Sunday's date perfectly. BUT, it doesn't work when I use it in the expression for the parameter default - Im' assuming because the latter cares about data type?

here's my statement:

=Iif(Now.DayofWeek=1,dateadd("d",-1,Now),(Iif(Now.DayofWeek=2,dateadd("d",-2,Now),(Iif(Now.DayofWeek=3,dateadd("d",-3,Now),(Iif(Now.DayofWeek=4,dateadd("d",-4,Now),(Iif(Now.DayofWeek=5,dateadd("d",-5,Now),(Iif(Now.DayofWeek=6,dateadd("d",-6,Now),(Iif(Now.DayofWeek=7,Now,0)))))))))))))

In short all those if statements calculate the day of last Sunday's date based on Now()...so if it's Monday, subtract 1, if it's Tuesday, subtract 2...etc.... BUT this returns the time also - argh! Formats!

How can I format this so it will equate to my oracle date populating in my parameter list? Do I need to match the output of the above statement to the LABEL (ie, string) or the actual VALUE (ie, date). I've tried both. I've hacked at this thing for an hour and I'm sure it's so obvious!



Thanks!
J

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