Calculated Field From Form To Table
Sep 18, 2006
Hello,
I have been reading various threads about this subject and I know that one shouldn't store a calculated field in a table.
I believe this may be an exception to the rule (but I could be wrong).
I am making a pricing database that will use a few manual inputs and the rest of the fields will be calculations (gross/profit margin, expenses) based off these inputs. We need to have these calcuated fields stored because they are essential to the pricing decisions and we will have to go back and access these fields at a later time. Another reason for this is because there will be at least one report that will be used to compare prices and calculated fields associated to a certain product by company, program, item type, ect...
Any help would be greatly appreciated.
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Oct 3, 2006
I have a form which calculates alot of numbers. Im trying to figure out how to save the calculation to a table field. Is this possible? Can someone help me with a solution please
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Jan 3, 2013
i want to insert a calculated value of a e.g field6 (field4 * field5) in forms into the database table. by using expression builders in my forms. i have made that feild and on click it shows the calculated value but on filling in the rest of the form and clicking on Insert button does not update this calculated field but iserts all other fields.
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Apr 13, 2013
A textbox on a form concatenates 2 strings. I want to insert that resulting string into a table .how can i do that ?
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Oct 12, 2006
I've read over and over that calculated data is bad, that's fine with me... but here is my dillema...
I have four fields that interact with my calculation in a single form. There is only one table in the database.
AmountF (The stored data in the table) (amount financed)
FC (calculated by =[amountf]*.25) (finance charge)
Amount Paid (used in calculation of total due)
total due (calculated by =[amountf]+[fc]-[amount paid])
The math already works, everything works. I can choose to print the form and it looks great. However, I would like for it to (when I'm done printing the form) somehow save the total due data to the AmountF column in the table. AmountF is in the same line as all the other information, so I would like it to not create a new record just update the old one.
All four of these fields have a text box in the form for themselves.
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Jan 15, 2015
I am creating a database to keep up with the expenses for my art business. I have a table for Vendors with a field (Mileage) for one-way mileage that I enter manually (EX: 11.8 miles). Then I have a calculated field that basically just multiplies the Mileage field times two to get total mileage to and from my house to vendor location. (Total Miles) {The reason I want to do this this way right now is because I didn't keep up with my mileage this year and I am having to look up the distance from my home to each location)
Then I have a "supplies" table where I show the date, the vendor, the item, cost, etc, and I want to add a Total Mileage field based on the calculated Total Miles field in the Vendors table that will automatically populate based on the vendor of each transaction. I just can't remember how to make this work and I know just enough SQL to be dangerous.
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Jun 18, 2014
Table1 contain Two fields (3Months) and (6Months)
Table2 contain Two fields (3Months) and (6Months)
the table 2 is the source of a form that will let the user change the numbers. table 1 should change Date1 and Date2 Fields based on the two fields (3months) and (6months) if i want to make a lookup wizard it should be changed manually and if i make a calculated field i can't find other tables in the expression builder
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May 13, 2015
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)?
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Nov 12, 2004
Hi folks,
Is there a way to have a calculated field within a table? I have a table that I've added four fields to: AmountIT, AmountRE, AmountKK, AmountRes. I want to be able to sum these four fields to give AmountTotal, but is there a way to have in a table?
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May 23, 2005
Im not sure the best way to go about this and would be most grateful if I could be pointed in the right direction.
If I had a table called tblEmployee and a field within it called "PayRate" and another table called tblHours with a field in it called "LabourCost" and a field called "Hours". What is the best way to hold the "LabourCost" value so it doesnt get affected if someones "Payrate" is changed.
I expect I have asked this all incorrectly and I really do apologise.
Many thanks in anticipation... :)
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Mar 31, 2006
In an orders table, i want to have a total value calculated... in the table... i was only able to do that in a query... but is it possible to do so in a table?
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Oct 12, 2015
I am calculating a field fldD. I have added the following to the Control Source of fldD "=[fldA]+[fldB]+[fldC]"
Can I save the value that is created back to the table i.e. fldD will be the value of =[fldA]+[fldB]+[fldC]
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Aug 10, 2007
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
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Feb 12, 2008
Is it possible (and logical) for me to create a table with a calculated field from 2 other fields in the same table? Example; I have a long time field (mm/dd/yyyy hh:mm:ss) aka StartTime, and a long time field EndTime. I would like to subtract the StartTime field from the EndTime field to get the total time elapsed, but in hh:mm:ss format. I can get it in hh:mm format, but I really need the hh:mm:ss format. Any Ideas? :cool:
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Sep 13, 2013
I've learned the hard way about using calculated fields in a table. I used on while building in Access 2010 for users that will be using Access 2007. Once my testers pointed out the error message, I did some research and realized my calculated field was the problem.
So, I created a query to replicate the calculation, deleted the offending field from the original table and redirected everything to point at the new query vice the original table.
However, my testers are still receiving the error about needing version 14 to access that table. There isn't a calculated field there any longer, but they still can't access that table. Did that calculated field put some sort of taint on my database that can't be removed? I'm not sure what to do. Do I need to start over, so that a calculated field was never part of the database to begin with? If so, how much of my existing one can I reuse?
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Jul 22, 2013
Access 2013
I am trying to add some numbers together for a number of fields, of which at least one field will either be 0 or empty. I am trying to use the following formula in a calculated field in a table:
IIf(IsNull([Price Increase %]),[Total],([Total]*[Price Increase %])+Nz([LumpSumAnnualIncrease]))
Access returns an error statement: The expression XXX cannot be used in a calculated column.
Is there a different formula I should be using, or a work around, other than using the formula in a query.
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Feb 17, 2014
I did the calculated fields in my table but in my datasheet they are not appearing. Are they not supposed to show there? I have not created any forms yet.
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Aug 6, 2013
I need to populate a table with Grid reference values consisting of 6 figure integers, eastings and northings.
I am receiving/downloading the Grid Refs in a UK Grid Tile format, with 3, 4 or 5 figures preceded by letters.
E.g. SK 456 849, SP 6789 4356.
I have used some query functions and written a bit of VBA behind a form to convert the received coordinates into the full coords I want. The coordinates are now in unbound controls on a form, and I want to pass these back to a table so I can use the data for display purposes.
Ideally I want to link to the table from a GIS and autoupdate without having to open the database (my imported data is linked in to feed the database automatically).
I have done some searching and not found a method to pass the values into a table - What is my best way of doing this automatically?
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Oct 1, 2014
Access 2010.
Have a table with columns of data which I want to total at the end of each row. The Calculated Field does this simply enough but it only seems to be able to add whole integers? How do I get it to accept and add values to 2 decimal places?
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Aug 15, 2013
Is it possible to make a calculated field in a table not allow duplicates?
There is obviously no option to select No Duplicates in the field settings?
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Mar 17, 2014
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]
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Sep 14, 2006
i have a total in an invoice with is a tabulated form with totals in the detail footer I want to post the calculated total (control) to a table. How ia this done.
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Feb 21, 2008
Having a real brain cramp with this one, so any detailed help would be appreciated:
On a form, I have one bound field that I want to use for calculations - ThirdCompTime. ThirdCompTime needs to calculate the difference between two bound date fields (ThirdTimeIn and ThirdTimeOut) and display the result.
I tried to build an expression to do this:
=[ThirdTimeOut]-[ThirdTimeIn]
but I cannot get the results to display. The two date fields' formats are set as General Date and the calculated field's format is set as Long Integar number. Any ideas?
Thanks!
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Jul 18, 2013
I am trying to change the data type of a field in a table from calculated to something else. It gives me the error "this data type cannot be changed once the field has been saved"
Is there any work around to this?
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Jan 13, 2014
I am trying to create a calculated field in my table, I am trying to use the following code:
DatePart("ww",[Gas]![Date Opened])
I receive the following error message: "The expression DatePart("ww",[Gas]![Date Opened]) cannot be used in a calculated column."
Access 2007 - I really need to be able to display the week number in the table, based on the Date Opened field.
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Jul 4, 2006
Hi all, I have a Form which calculates how much to charge a client.
I have a "Fee" field, and a few calculated fields based on this fee. The calculated field I'm having problems with is the "Tax" Field.
Prior to July 1, 2006, i had no problems. The tax was basically " =[Fee]*.07 " in the "control source" under the properties of the field i created in the form.
After July 1, the tax just went down (in Canada) to 6%. I can just simply change the control source to =[Fee]*.06 ...however, when I do this, the form also changes all the clients before July 1 to a tax rate of 6% as well...I'm not good with coding, and an not sure how to make the calculated field in the form to change the tax rate to 6% only if the client's contact date is after July 1, 2006. ContactDate is also another field in this form.
Help is much appreciated.
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