Having A Records Calculated Field Get Info From Previous Record
Jan 20, 2007
I have a table (tblStats). The user enters his current weight in a field named Wt. There are 2 other fields in the table named WkLoss and TTDLoss. These two fields are intended to be calculated. What I am trying to do is when the user enters his current weekly weight figure into the Wt field, I want the field WkLoss to get the user's weight from the previous record and place the difference in the field WkLoss. Also I would like to keep a total to date in the TTDLoss field.
So far this has been my attempt.
Code:Public Sub setWeight()Dim rs As DAO.RecordsetDim Startval As DoubleStartval = 190Set rs = CurrentDb.OpenRecordset("tblStats")'Select records to be updatedSet rs = CurrentDb.OpenRecordset _("SELECT * FROM tblStats ") rs.MoveFirst Do rs.Edit'field to update rs.Fields("WkLoss") = Startval rs.Update rs.MoveNext'increment step value Startval = WkLoss - Wt Loop Until rs.EOF rs.Close Set rs = Nothing End Sub
All I get is the value 190 placed in the first record and all zeros in the subsequent records. Also I don't have a clue as to how to get the Total To Date field to calculate.
Any help would be appreciated
Thanks for your time.
I am creating a database that will record the details of approx 30 shops and will store information on Annual Turnover, Profit, Return, etc.
I need to create a field that will calculate the increase/decrease in annual turnover between the current year and the previous year.
So far I have created a subform that will show the last 12 years of data for the particular shop, but now I need to add a calculated field that will get the current years turnover and also reference the turnover for the previous year, i.e. the previous record., and display the result. The other thing that I will need to do, is to have this field not calculated for the initial years trading, so this field will need to be hidden in the first record.
Can someone please offer some advice on how to go about achieving this???
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The first row, being the smallest year value, uses a previously defined elsewhere starting balance, annual contribution, and interest income. This is recognized via an Iif statement and establishing the first set of values which the second row should use to calculate.
The second record, and until the end of the query, automatically calculates the new starting balance value based on the sum previous row record's starting balance, annual contribution, and interest income.
Furthermore, for the second record, and untill the end of the query, the InterestIncome is calculated value incorporating the second row's StartingBalance value (which is the product of the sum of the previous record's values).
This calculated referencing to the previous record is causing difficulties.
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The formula is
Code: CASE_DAYS: CDbl(IIf([Actual Close Date]-[Creation Date]>=0,[Actual Close Date]-[Creation Date],""))
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(Select Count(*) from Data Where [ProductA1] > [Data1].[ProductA1];)+1
I have a query to bring in values, I need to select 2 rows of data but the criteria is as such:
x= starting value on form
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Attached is the relationship as well as the form.
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ID Name Location 1 Bob London 2 Larry 3 Harry 4 Jerry Glasgow 5 Paul 6 John Southampton
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The GetDates Command BUTTON should generate the red data above, like:
Private Sub GetDates_Click()
Go to a new record Go to the field App_Freq and fill it with: Copy/paste the data from the field of the same name in the previous record Go to the field App_Date and fill it with: data based on this calculation using the PREVIOUS record fields: App_Date + App_Freq (which are days) Go to the field Action_Date and fill it with: data based on this calculation: App_Date (of current record now filled out - step above), minus 7 (days). End Sub
That's it!
All the dates format is set to medium date. An error message should come up in case App_Freq is empty, for example
Also note that the data can be manually changed at any time and should not revert to its last calculation. The button only generate data into a new record.
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