I'm a novice coder and I'm trying to create a tool using MS Access (since I can't build GUI's to safe my life) for locker management in the school I work for.
Now, I'm trying to create this feature where a student can request a locker. In my locker table, I have a column with "Wishes" which is a Yes/No field. The other column is "WishDate". This is a date field.
My idea is that if the Yes/No field is set to "Yes", the tool fills in today's date. And if the Yes/No field is set to "No", I would like that the date is emptied out (if there is anything in it) But, I'm truly stumped on how to do that. How can I build a feature like that?
The reason I would like the date field emptied if the Yes/No field is on "No", is because on the form that I created to add a student to a locker, I put the students who wanted a locker first based on that wishdate.
I hope my idea and question is clear. Otherwise, I'm willing to clarify my idea further.
If you want to populate date/time field based on yes/no selection, use code (macro or VBA) in checkbox AfterUpdate event. I use only VBA, so something like:
If Me.chkWish Then
If IsNull(Me.tbxDate) Then Me.tbxDate = Date()
Else
Me.tbxDate = Null
EndIf
Related
I have a textbox in a form that I created.
I want to add an expression in the textbox's Control Source property. I also want to bind the textbox to a field in the table using Control Source propety of the textbox.
Is there any way I can add a field name and an expression in the control source property of a particular textbox?
The expression sums up the total amount a customer must pay based on the price and amount.
I tried solving this problem by looking at solutions on stackoverflow from people with the same problem but that didnt work for me either.
I know that storing calculated fields is bad, but I have to do it.
I am using Microsoft Access 2016. I am trying to find out how many years exist from the current year until a future year. I have a column that is end_date. I am trying to create a calculated field that is essentially YEAR(end_date) - YEAR(current_year). I tried to use YEAR(DATE()) but DATE() is not allowed to be used in a calculated field apparently.
Is there no way to do a calculation like this?
Nope. Calculated fields are cached and static, so are NEVER allowed to contain ANY information that will change over time, due to system settings, or anything else that is not directly entered in that row.
However, you should not be using calculated fields anyway. See http://allenbrowne.com/casu-14.html, among many posts advocating for not using calculated fields.
Instead, use queries to do calculations. That way, you won't have any trouble using the current date, and won't have to deal with the possible errors and portability issues calculated fields come with.
I changed my thinking to calculate this in a form. It does not seem good practice to have a field in a DB that changes everyday.
In a form, you can use this expression as controlsource for a textbox:
=DateDiff("yyyy",Date(),[EndDate])
However, that return the difference in calendar years. To find the count of full years, use a function like AgeSimple and this expression:
=AgeSimple([EndDate])
I have a fairly simple problem, but I don't think I understand SSRS and scopes well enough to figure this out.
What I have is a case (one entity) that can have multiple appointments (another entity). Appointments have a date and a status. I want to display the next soonest appointment date and its status. To display the date I'm using
=Min(IIf(Fields!appt_start.Value > Globals!ExecutionTime, Fields!appt_start.Value, Nothing))
The idea is that I first pick only those appointments that occur in the future, and then grab the soonest one. It seems to work great.
Now, I need to apply the same filtering logic, but display the appointment status rather than the date. From my understanding, this is where scopes would come in. I could limit my scope to just the appointment I want, and then show its status. But I don't understand how to do that.
One way to go about this particular problem would be to use a filter in combination with the First function. Add a filter to the table to only show dates greater than the current day. Use a table row with no grouping and use expressions like this:
=First(Fields!appt_start.Value)
=First(Fields!appt_status.Value)
Another option would be to add calculated fields to the dataset to only populate values such as status when the date is greater than the current day. This is useful if you need to show more information later on.
Edit: Yes, you would want to sort the data by date for the First function to work right. You can actually filter at 3 different levels in SSRS. Right-click on your dataset and go to Dataset Properties. Click on Filters. Click Add. Fill in the expression, operator, and value to meet your need. You can also do this in the group properties or the table properties.
So we use FMP11 to do inventory management. I do price updates to our products 3 times a week and it would be nice to store our past cost values into a separate table for historical pricing. I know how I would go about doing most of it, but is it possible to create a new field that is labeled as today's date on the fly? So my headers would be labeled with that days date and the old pricing value from my other fields would be inserted.
It is a bad idea to create new fields for the purpose you're describing. Create additional records instead, and do your report going from top to bottom instead of left to right.
That said, if you want to do it, you can using FileMaker Server Advanced with JDBC and the ALTER TABLE command.
Create an new table (e.g. ArchivePricing) to hold the values you want to reference at a later date (e.g. ChangeDate, Price, Item, ItemID, etc.).
Create a new field in the current table called z|newprice - use this to type in your new pricing (you might do this on a list layout so you can easily change a bunch of prices).
Create a button that triggers a script that:
creates a new record in the new ArchivePricing table and inserts the ItemID (thus creating a link to the original table) - this can be done using script parameters or setting a variable)... the script continues.
uses the "set field" script step to insert info to this new record in the ArchivePricing table.
uses the Get (CurrentDate) function to insert the date into the ChangeDate field (thus capturing the date the change was made).
Before the script finishes be sure to use "set field" back in the original table to move the value in z|newprice field into your normal Price field. Do this at the end of the script and then commit record.
I'm trying to create a Crystal Report that reads data from an access table. I have a particular field in the access table called REPT_YYMM. This is basically a run data field, so each month when a program is run it populates the current year/month in the field before exporting to access, so there is a way to do month to month comparisons. For the report I'm working on I just want to display the data along with the current REPT_YYMM field when the data is refreshed on a monthly basis. Is there a way to do this in a formula. I'm not familiar enough with date type functions to know where to start.
Any guidance or suggestions are appreciated!
Your question isn't very clear but if i understood correct you just need to filter the data where field REPT_YYMM = YYMM.
Goto selection formulas, record and enter:
{table.REPT_YYMM} = cStr(currentdate,'yyMM');