I have a database table in Microsoft Access. I want to assign the default value of one of those fields to another field that happens earlier in the same table.
I tried the value =[Form1].[AssignedByes] with no luck and the same for =[AssignedByes] but with no luck.
Can anyone help?
The field name I'm assigning the value to is [RemainingByes] and the field that assigning the value of is [AssignedByes].
To get around this problem, I create a Query that basically functions as the table. I use it instead of the table when creating other queries, forms, etc.
I'm guessing that you copy [AssignedByes] into [RemainingByes], because [RemainingByes] will start off with the value of [AssignedByes], but you want to be able to change it later.
So, you can set up the Query with a calcualted field called [xRemaningByes]. You would enter the changed values in [RemainingByes]. Then set up a formulat in [xRemainingByes] that returns the value of [RemainingByes] if there is one, and it not, it returns the value of [AssignedByes].
[xRemainingByes]: Iif([IsNull([RemainingByes],[AssignedByes], [RemainingByes].
When you use the Query instead of the Table, you will use [xRemainingByes], which is the Query's calculated field, instead of the Table's field [RemainingByes].
[xRemainingByes]: Iif([IsNull([RemainingByesOverride],[AssignedByes], [RemainingByesOverride]
A field's default value is applied at the instant a new record is created. So you can't use [AssignedByes] as the default value for [RemainingByes], because [AssignedByes] doesn't have a value yet.
OTOH, if you've assigned a default value property for [AssignedByes], use that same property for [RemainingByes].
If your Access version is 2010, see whether you can use a data macro as a pseudo-trigger to accomplish what you want.
You could also try binding a form to the table. In the after update event of the control bound to [AssignedByes], you can assign a value to another control bound to [RemainingByes]. This could allow you to do what you need in the form, but won't apply for changes made outside the form.
