I know that as a general rule one should not store calculated values in a table, but if I need to include such a value on a number of forms, and calculating that value involves manipulating an ADO Recordset, does there come a point where the performance hit outweighs the design "quality"?
View RepliesI understand the conventional wisdom of not storing calculated values on the table, but I have a need to do do so. On my Input Screen I have a generated Certificate # derived from 5 single value fields keyed onto the screen. This certificate # is unique to those 5 single-value fields which should not be repeated. I want to store it on my Table as the Primary key with "no duplicates" so that if a keyer keys the same 5 single-digit values , thus creating the same Certificate #, he will get a MsgBox back telling him he cannot add a duplicate entry.
attached is my table and Input Screen.
I have what is probably a stupid question but I've been struggling with this one for a while. I have an ordering database which has an Orders table (containing Order ID, Date, Supplier etc) and an Order Line table within which I have a combo box for Product name, supplier, price, VAT rate, Line price etc. At the moment, I have the order line table as a subform within the Order form (run from the Orders table). The problem I'm having is the subtotal and total fields. At the moment these are in the Order Line table as I cannot figure out how to get these in the Orders table. In summary, can I make a calculated field in one table that calculates values from another table (linked by Order ID)?
View 3 Replies View RelatedI know that it is bad form to store a calculated field in a table - normalization and all that - but I can see no other way around a need that I have.
I'm trying to make a database to store injury time for employees. If an employee is injured, he can do light work for a certain amount of time, but this light work need not be contiguous. But, the total time on light work must be known so as to see when it is used up.
For example:
Bob is injured on 4/1/06 and goes on light work on 4/2/06 until 4/5/06 (4 days). Bob is then taken off light work until 4/10/06 when he reinjures the same injury. This does not count as a new injury, because it is an aggravation of the old one. So, Bob goes back on light work on 4/10/06 until 4/15/06 (6 days).
So, I need to store Bob's total time on light work for this injury (10 days) so that I can keep a running total to check against the maximum for a single injury. All I can think of is to store the sum of days on light work as a field in Bob's injury record, but that means storing a calculated field in a table.
Am I missing an easy way to do this, or is there a method to do what I want that I am just not aware of?
Thanx for any help!
Hi,
I know it breaks all the rules to store a calculated field on a table, but I've painted myself into a corner with the way I built this particular database, not good, I have repeating groups and basically the whole database is built this way. I need one form to store a calculated value on a table to solve a problem on a report that encapsulates the total of all the repeating groups. Before you start the lecture, I know I messed up, but this is way to far down the road to start over. Any help would be greatly appreciated.
Gary
I know that it isn't usually best practise to store calculated fields in a table, but in my situation it is necessary, and I haven't really found a good answer for this after searching these and other forums.
Currently my database has one "Name" field (I didn't make it like this) which might look like this "Jonathan (John) Smith"
Now I also have reason to grab the name like this "Smith, John" for other purposes.
I've set up a form for inputting new people with separate fields for firstname, preferredname, and lastname. I have the calculated fields:
=[fname] & " (" & [pname] & ") " & [lname]
=[lname] & ", " & [pname]
(Later I will add in all the iif's for if there is no preferred name)
Upon finishing the form, the user hits Submit, and I would like to store the concatenated values into the table in their appropriate fields.
I can do this with a SQL INSERT INTO statement but I'd have to add all 25 or so fields from the form, and injecting user input directly into a SQL statement is not best practice either.
I have been struggling with this and would appreciate any help. It sounds so simple!!! I have 4 fields (Unit Price 1, Unit Price 2, Unit Price 3, Unit Price 4) in a Orders table that I want to add together and store in a 5th field (Sub Total) in the same table using a form. I am having problems with the sum and I am unsure how to get it to show in the Sub Total box in the form as well as the table. Thanks for your help!!
View 2 Replies View RelatedI have been reading previous post s regarding the storing of calculated fields. Basically everybody says don't do it. However, if I don't I am not sure how to achieve what I need to achieve.
I am storing data on tool vibration levels. Data is input for X, Y and Z axes and a vector sum (total) is calculated on the fly using a query. So I only ever store X,Y and Z.
Ultimately I am looking for this database to be able to give me useful statistical outputs in particular a range of vector sums for a tool type. If I don't actually store the vector sum for each test then how I am ever going to report a range? The data would never change for each test as these become statictics, it's not the same as working out rates for example which may vary according to parameters.
What is the best way to do this?
New to Access and learning the hard way. Im sure this is an easy one, but sure would appreciate the help. I am trying to sum a group of cells and display the total, which i have done. But I also want to store this total in my database. So my question is, how do i move my calculated total to my field that has the "record source" bound back to my field in the database? Hope that makes sense. Thanks in advance.
View 3 Replies View Relatedif i have formula in a text box can that calculation be stored in a table???
example
sales total
sales tax
grand total
where grand total = sales tax+sales total
if the control is bounded to a field in a table once the formula is entered doesnt it loose the connection with the field???
right now when i enter a formula in a control it will no longer store it in the table but it will only show the result in the actual form..???
Hi all, another beginner question here.
I have a table of records which is is basically temp storage, once I'm done inputing information, an append SQL statement is run to move the data to its permament table, then I use a delete statement to remove the values in the temp table.
Now, I have a column called Result, which stores the values of a radio button group (1, 2, or 3). I have a series of queries which count the number of times 1 or 2 appear (3 in this case, doesn't matter since it represents N/A. 1 = True, 2 = False, 0 = Null).
I'm having trouble getting the result of said query to store in a table. The statement is as follows:
SELECT [qryGetFail]![CountFail]+[qryGetPass]![CountPass] AS Total
FROM qryGetFail, qryGetPass;
This returns the sum of both counts, so I know how many questions were answered either Pass or Fail, hence I know how to score record. Here is my Append SQL statement as it currently works:
INSERT INTO tblAuditResults ( Question, Result, Comment, ACAPS, AuditDate, TeamMember, Auditor )
SELECT tblQuestions.Question, tblQuestions.Result, tblQuestions.Comment, [Forms]![frmAuditCreate]![txtACAPS] AS Expr1, [Forms]![frmAuditCreate]![txtAuditDate] AS Expr2, [Forms]![frmAuditCreate]![cmbTeamMember] AS Expr3, [Forms]![frmAuditCreate]![txtAuditor] AS Expr4
FROM tblQuestions
WHERE (((tblQuestions.Product)="4" Or (tblQuestions.Product)=[Forms]![frmAuditSelect]![txtVarProduct]) AND ((tblQuestions.Function)="3" Or (tblQuestions.Function)=[Forms]![frmAuditSelect]![txtVarFunction]));
This stores everything I need it to. But I cannot for the life of me get the statement to accept a value from a qeury and store it. I have tried adding another expression but it always just prompts for the value instead of pulling the value from the qryGetCalc.
Is there a specific way to have an INSERT statement pull a value off an active query?
I have a table that stores information for multiple behavioral surveys (numerical values). My goal is to add the proper fields that compose total scores value for each respective survey (do a summation of scores). Now, under design view for my table, I see that I can add a calculated field. When I create this calculated field, I can use the Expression Builder to do a sum of the proper fields (the fields that compose a total score for a survey). The only problem that I'm encountering is that if a field that is part of a survey is missing information, the summation disregards the rest of the values for that survey.
How can I account for these missing values so that, if 1 out of my 9 fields have information, I will still get a summation score for the 9 fields? I want to be able to do this without having to change the value of the missing field to 0.
In SPSS I can easily do this by computing a variable and using a code like this:
SUM.2(field1, field2, field3, etc.)
Hello All,
Probably trying to do the impossible.
Normally I would never (that’s a long time) have the results of a calculated field in a table, but I’m stumped.
Table1
TestID: Autonumber
Quantity: Number
Selected: Yes/No
Table2
SumID: Autonumber
TestID: Number, Foreign Key
Quantity Delivered: Number
Query1-Sum Query
Table2
TestID: Group
Quantity Delivered: Sum
Query2- Select Query
Record Sets
Query1 Table1
TestID-----------------------------------TestID
Quantity Deliverd Quantity
Select
Fields in Query2
TestID from Table1
Select from Table 1
Run Query
Can’t update “Select” field
So I’m thinking that I should create a 3rd query to update the summed Quantity Delivered into a new field in table 1. Which would in effect create a stored calculated field.
I have a score marking template for an internal audit. A criteria is either met, or it is not. All of these questions have Yes/No data type. each question has a weighting. I have written a VBA function to work out the total score by using a bunch of If statements.I need to store the final result in a table, by entering the answers (yes or no) into a form.
View 4 Replies View RelatedCurrently I have a calculated field in my table; however, under certain circumstances I need to change the value to another value which is not related to the calculation. I understand that the calculated fields are read only (why is that?), so I was wondering if there was any way to change values within a calculated column without actually changing the expression itself.
View 1 Replies View RelatedHere is an example of what I was talking about re: private message and storing calculated fields. Any help is much appreciated.
Also I received your email in regards to a sample secure database but I am getting a "Memory could not be read" error when I try to open it. Does this have anything to do with how it has been converted to 97 format or is it an error at my end? (I've been able to open other dbases from the forum).
Thanks,
Dearnne
PS Thanks also for your help with adding to option groups.
Eventhough i know calculated control are for queries, I still need to store a calculated value of a sum. I have a form with customers, dates, locations. That form has a subform that contains the services done and materials used. This subform is in datasheet view. In the footer i have a control with =Sum([Price]).
So I need the value of this control to be stored in the table the main form is based on. I did an unbound control in the main form where the =Me!Subform.Form!.Textx will bring the value "over" Then for the on focus event the vba code Me.Total=Me.Textx stores the value. That is fine. The same works with a command button with the same vba code.
However i am asking if there is a more automatic way to get the value over without the unbound control/command button.
I am trying to create an accounting program on access and i got stuck on the final touches
I'll explain my situation in brief. I created two tables
/1 for the invoices (invoice number, client name, total)
/1 for the orders (order id, invoice number, subtotal)
And I made a relationship between those two and everything worked out well. I created a form/subform and put a text box in the subform to calculate the sum which worked correctly. And I exported the value of the sum to the main form and it's great.
The problem is that how can i make the Total field that belongs to the table invoice have a default value as same as the Expression (sum) so that the sum is stored with the invoice record.
i attached the picture in the attachments
I have 3 values in unbound text boxes and a 4th text box that is calculating the sum of the first three text boxes, i need the result of the calculation to be stored in the field "Total Cost" that is also on this form.
Any ideas
Cheers Mikk
I need to display a value from a table in a text field on a form based on another text field on the same form.
The table has records as follows:
Month/Year xx Month No xx Year No xx Month ID (xx shows break in columns)
Jan-06 xx 1 xx 2006 xx 24
Feb-06 xx 2 xx 2006 xx 25
Mar-06 xx 3 xx 2006 xx 26
Apr-06 xx 4 xx 2006 xx 27
May-06 xx 5 xx 2006 xx 28
Jun-06 xx 6 xx 2006 xx 29
Jul-06 xx 7 xx 2006 xx 30
In one text field I use the DateSerial function to calculate the value of the previous month (e.g.Jul-06). I need to return the MonthID value to the second text field based on the value stored against it is the table, so in case of Jul-06 it would show 30 in text field 2.
I am trying to get a value from a textbox into a table I created...
The textbox "calculates a number based on which radio button is pressed example if radio button 1 is pressed it returns 0 if radio button two is pressed it returns 8 and if radio button 3 is pressed it returns 15." I need to save the 0,8, or 15 depending on which radio button is pressed into the table...
I know you aren't supposed to store calculated values into a table but the report would never need to be changed and it just saves a new one each time with that being said anyway to make this work would be very useful!
Also how can you use the answer of calculated textboxs in other calculations?
i have a subform which contains a lot of calculated values. fields which calculate values are located both in master form and subform. i use those calculated values in various reports where i have to insert formulas again. so i have decided to insert calculated values in table directly. i can use update query but i am unsure how to trigger it; and how to keep fields updated everytime a value is changed.
main form fields = [gsm] , [rate]
sub form fields = [pages], [qty], [gsm]*[rate]*[pages]*[qty]
I have two tables of data, each relating to three business branches (branches A, B and C).
Table 1 shows the expenditure of each branch (by fuel, premises and wages).
Table 2 shows a number of units for each branch (mileage, floorspace and sales).
What I would like to do is calculate unit costs, based on the expenditure in Table 1, divided by a relevant unit in Table 2. The catch is that I want to have a third table which allows the user to specify which expenditure (from Table 1) is combined with which unit (from Table 2) to generate the calculated unit costs. I've been able to do this in Excel, and have attached an example. I've also attached an incomplete Access version with the first two tables. Given the complexity of my actual data, I feel this could be better handled in Access than Excel.
Howdy
I know that you shouldn't store totals in Access, but I can't think of a way around what I want to achieve and wondered if anyone had any ideas.
An item on stock will move from one location to another, I will need to list the 'balances' of this stock at each location, easy enough to do, but there are hundreds of item movements per day and the users do not want a history of movements to be kept but do require an ongoing balance.
e.g.
100 of the item moves from A to B, this movement record gets deleted, how would I know that the item stock at A has been reduced by 100 and B raised by 100?
I'm using Access 2010. I need to calculate a score based on values selected in a table by looking up corresponding values in other tables. I have a "Project" form to create new entries into the Project table (see Table 1). When I create a new project record, I will select values for the Payback and Need fields by selecting options from a list. The Payback list is pointed at Table 2 and the Need list is pointed at Table 3. In the below example, I created the "ABC" project and selected "1 year" for the Payback field and "Repair" for the Need field. Pretty simple.
Now that I have the "ABC" project loaded to my Project table, I'd like to create a report that will show a "score" for this project. The score should be calculated as follows: Payback Impact + Need Impact. In this example, the score should be 30 (Payback Impact of 20 + Need Impact of 10).
I am pretty new to access, I will get right to it.
I am scoring rating scales. I want to be able to enter just the responses from a person, say on 80 questions (preferably into a form), where all the answers are 0 to 3 and have Access add the questions into the right groups to calculate all the sub-scores of the rating scale.
For example, Scale A may consist of Questions 1, 6, 15, 29, 35, and 70
I need access to add those up and save them so I can use them in a report.
I also need access to add the frequency of certain questions that were responded to with the answer 3.
I have gotten Access to calculate the scores in a form by adding extra variables to the form, erasing the variable name out of the white box and putting in the syntax =[Q1]+[Q6]+[Q15], etc. in place of a variable name but it just sits there on the form and doesn't store it anywhere.
Thanks