I’ve started a few days ago to play with Dates information on a new app, It’s a reporting app in which reports can only be made once per day, and there is collumns that (should) calculate the value of your duty time for the last 7-28-90 and 365 days
The way the data is built is that I have a collumn for each preset ([Last_7],[Last_28],etc…)
However, I can’t wrap my head around how to check previous data for the number of days I have, I was able to create something like this to check for the last 7 days with the WEEKNUM() expression :
To find data within your date ranges, I think you will want to use expressions like below or some derivative:
Last 7 days = _**AND( [Date] >= TODAY() - 7, [Date] <= TODAY())**_
Last 28 days = _**AND( [Date] >= TODAY() - 28, [Date] <= TODAY())**_
Last 90 days = _**AND( [Date] >= TODAY() - 90, [Date] <= TODAY())**_
Last 365 days = _**AND( [Date] >= TODAY() - 365, [Date] <= TODAY())**_
WEEKNUM() function basically tracks “lines” on a calendar where week 1 is the line that contains Jan 1. Each line is from Sunday to Saturday, as you would normally see on a calendar. And each date on that line will get that same Week #, This won’t help for Last # days since the period could cross week numbers.
So in the case of your answer, it would always check relative to TODAY(). however, if I make an entry lets say for the previous month (user forgot to enter data maybe) I want this data to check relative to the date he enter the data from (in this case [Duty_Date]). So I thought I’ll just change Today() to [Duty_date]:
Last 7 days = AND( [Duty_Date] >= [Duty_Date] - 7, [Duty_Date] <= [Duty_Date])
Seems my thinking is wrong because, that doesnt work
Correct, that won’t work. There MUST be 3 dates to properly determine if a row should be included or not:
a period Start Date - above this was TODAY() - 7
a period End Date - above this was TODAY()
the date to check - above this was [Duty_Date]
So the question is, how do you define the period Start and End Dates?
Maybe I am mis-understanding your need. In order to “calculate the value of your duty time for the last 7-28-90 and 365 days”, I am understanding that you need to gather the list of rows where [Duty_Date] is within the Last 7 days, for example, and then SUM a value across those rows.
I need the Active row to check the previous 7,28,90 and 365 days against the date, and compare that another collumn doesnt go over a certain amount in a SUM() Expression,
I’m adding my “working but not working” expression :
The Expression checks the data for this user only, and gives me the sum of [Duty_TimeTotal] for this period including the value added from the active row
EDIT : Thinking about what a wrote, maybe I should ask differently. How basically how would you go about checking if value is TRUE in the past 7 days from the Date in the form you’re entering
something like : Is the value TRUE shown in the records for the past 7 days ?