Access Form Calculations
Sep 19, 2006
Dear All, i have a very simple database with only one table.
The table has three values [Start], [end] and [Total].
The [start] & [end] fileds are numerical.
I am trying to get it so that i can enter the values onto a form, the two values in [start] and [end] need to be added together to give the [total] value.
I can get it to do it on the form but i don't know how i can get the record in the table to be updated.
Does anyone know if this can be done and if so could you advise me where i'm going wrong.
Any help would be most appreciated.
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Sep 28, 2015
I have solved the problems getting values on the subform. I have not in getting values on the subform.For instance, on the one titled phone use the formula in the tutorial is:
=[sbfCustomerRoomUse].[Form]![txtTotalPhoneUse]
#Error results when the doc is put into a form mode.
Now when I input each value in the equation above separately.I still get no entry.
For " = sbfCustomerRoomUse" , I get #Error;
and for "= txtTotalPhoneUse", I get #Name.
CustomerRoomUse and txtTotalPhoneuse are from the subform that was dropped into the customer form in a previous step. It shows that explicitly when designed sbfCustomerRoomUse on the main that CustomerRoomUse come from a subform. This does not seem to need to be done with txtTotalPhoneuse, and I am not sure why. Neither one gives me a desired calculation result.
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Oct 16, 2006
I have created a form in Access to enter data into a Table. But one of the firelds I need to enter into the Table is calculated from some of the data being entered in the form. I currently use an Update Query to go back and do the calculation and then update the appropriate field. What I would like to do is to do the calculation and update the calculated field while the user is entering the data. (Boy I hope this is making sense!)
If it helps understand what I am trying to do here is an example: The user is entering data for a job we produced. Some of that data is NumberOfPages, PaperSize and JobType. But I also need to take those three pieces of info and calculate the number of square inches. Currently I run a function I wrote via an Update Query that updates the SquareInches field in the table. I was wondering if there was some way to do the calculation on the fly and enter the calculated value into the table while all the other data is being entered. I tried writing a little code to attach to one of the field's OnExit event but I seem to be having a problem getting the values from the fields I have already entered.
If anyone has any suggestions I would sure appreciate hearing them. Thanks!
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Jun 8, 2005
I have an odd problem that has stumped me for several days. I'm working on a form that contains a chart. The chart is based on a query, which is based on another query, which is based on a table. In the top query, I need to put some calculated fields that operate on other fields. But when I try to multiply two fields together, I get Null. I'm pretty confident that the fields I'm operating on are numerical.
The fields of the query should be:
MaxOfEverInSchool
MaxOfSurvivalToGrade
MaxOfEverInSchool
With these being the calculated fields:
MaxOfSurvivalToGradeCum: MaxOfEverInSchool*MaxOfSurvivalToGrade/100
MaxOfCanReadCum: MaxOfEverInSchool*MaxOfSurvivalToGrade*MaxOfCanRea dCum/10000
Any insight would be greatly appreciated--I just can't understand why Access would suddenly refuse to do math.
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Aug 24, 2005
I need to be able to use some functions available in excel in an access 2000 database. These include SUM and IF functions. If any one can help me figure out how to do this any help help wouold be greatly appreciated
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Feb 18, 2007
Hi
I am currently setting up a data base for my work and was wondering if there is any way to do the following calculation:
I have a database of automatic doors that are contantly being repaired and i want to keep a record of the accumulated costs involved with this.
I have set up a form to update each door and its accociated repair cost, the problem is when i enter the new repair cost access replaces the current cost with the new and i want it to be added to the current cost so the accumulated cost can be bulit up over time.
I hope this makes sense
Any help would be greatly appreciated!!:)
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Dec 5, 2007
Hi
Since this is my first attempt at creating a database and I must admit I am needing a wee bit of help with doing a calculation
I have created a database and need to create a Query I think, to calculate the number of places available the maximum places in each group would be 20 and obviously a count of the people going onto each group would be subtracted from the Max places available this would then need to update the available places . I just cant think how to do this any idea would be a great help.:confused:
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Sep 10, 2015
I am building a database and in it I need to do date calculations. Without too much detail I input a date based on the built in calender from the date/time field and based on that date I need to have the following data returned into other individual fields: 6 months from that date, the days until that date, 2 months from the date input, 4 months from the date input, 5 months from the date input, 60 days from the end date, 45 days from the end date, 30 days from the end date, and 15 days from the end date.
Example: I input "Sep 10, 2015" and I would get "Mar 10, 2016", "181 Days", "Nov 10, 2015", "Jan 10, 2016", "Feb 10, 2016", "Jan 10, 2016", "Jan 25, 2016", "Feb 9, 2016", "Feb 24, 2016".
I have read through websites regarding date calculations within Access but I cannot find the specifics for the application that I need.
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Jul 22, 2014
How to implement YTD calculations in Access.
Current table:
Property Month RevenueA Jan '13 100
A Feb '13 50
B Jan '14 200
B Feb '14 300
Desired output:
Property Month Revenue YTD revenue
A Jan '13 100 100
A Feb '13 50 150
B Jan '14 200 200
B Feb '14 300 500
I am new to Access programing and have not been able to figure out a query/macro to execute this.
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Mar 25, 2006
Erm Hi everyone I'm new.
Sorry about the rather striking title, but I have an assignment with the deadline tomorrow and I need to find out how to perform numeric calculations in access with different fields (i.e. adding numbers, minusing etc.)
Well, I had to make a project at school for my GNVQ ICT, I chose the advanced sales database, since its a project we have to add in our own features and find out about them ourselves. Well I thought I'd create one for my company inside school, I wanted to create a database that would print invoices and monitor all the resources we have. The project has to be in on monday!
However all was going well until I came upon a slight problem, I'm not sure how to do calculations in Microsoft Access!
Well basically this is what I'm aiming at, its nothing too complicated really.
I have a table called RESOURCES which keeps track of all of the stock the company has (e.g. how much paper, how many mugs, tshirts etc.). I want the database to be able to automatically take 1 away from the selected resource when a form is used to file a new order.
E.g.
I have a form asking me the details of the design, In the resources table I have set the quantity of mugs as 100, i.e. I have 100 mugs in stock and available.
I use the form and tell the database that I am making a design which will use 1 mug.
The database then goes to the resource table and takes 1 away from the available stock of mugs making the total mugs available 99.
I then the database to be able to do this automatically, when a checkbox is ticked, when the form is submitted I want it to see which text boxes are ticked and take the correct consequent resources from the RESOURCE table.
I have Access 2003, I have attached the file incase anyone needs it, note that the Forms have NOT been made only the resource, customers and orders tables have been created.
If someone could tell me how to do this I'd be extremely greatful, this is very URGENT I have to hand in the project on Monday!!!
I know I'm asking alot but I'd be really really greatful if someone could help me out!!!
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Mar 31, 2005
Hello,
I am trying to creating a database for attendance issues for employees. I have the following text boxes on my form:
First Date Absent, Last Date Absent, Reason for time off, Disiplinary action, point value, comments
Our attendance policy requires certain disciplinary action be taken when the point values total a certain amount in a specified amount of time.
With all that said, I am wondering if I can create a text box on this form to calculate the point value within a 30 day period and a second text box to calculate the point value within a 12 month period. I can sum the total points, but I am unsure how to sum the points within the date ranges needed. Any ideas?
Thanks so much!!!
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Feb 5, 2006
I have a problem with main form and two subforms in it. Both subforms are in "continuos" mode, and each of them has field in footer, where it calculates total sum for all field that are in it.
Then there is main sum below both subforms (all this is in detail section of form) and it calculates total for both sums of each subform.
Whenever i fill values in first subform and in second subform, i have results everywhere, but if i fill values in first subform but leave second subform empty, the "main sum" below both subforms is empty also....
The control source for main sum field is "=Forms!frmMainForm!frmSubform1!Text1 + Forms!frmMainForm!frmSubform2!Text2" where Text1 is "total sum" in first subform and Text2 is "total sum" in second subform...
I set default value = 0 for all fields in both subforms, but it won't help....still shows empty fields in that subform, which isn't filled....Actually when i open form for the first time, it shows "0" values in all empty fields and then immediately clears them and shows empty fields...
Any ideas how i could solve it?
Thanks
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Jun 27, 2013
performing calculations in a form in an Access 2007 database.The form is used to generate invoices and sales receipts. At the bottom of the form there are 3 text boxes: "Sub-total" (Text128), "VAT" (Text130) and "Total" (Text132). Each text box is bound to the Control Sources "Sub-Total", "VAT" and "Total" respectively in a table called "Orders".
I would like the "VAT" text box to automatically calculate the VAT on an order and enter it into the VAT field in the table "Orders". To do this I have tried using the formula:
Code:
=[Text128]*0.2
I would also like the "Total" text box to automatically calculate the total cost of the order and enter it into the Total field in the table "Orders". To do this I have tried using the formula:
Code:
=[Text128]+[Text130]
I know that these calculations are correct as they work in an unbound text box however I cannot get this to work with bound text boxes.Is it actually possible to do this or do I need to use another method to perform these calculations?
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May 31, 2013
What I am trying to do is hard to explain but I am going to try and explain it as best as possible. I have a form that I enter football stats into for my FFL league. For the sake of simplicity I am going to focus on the completions(comp) field. I want to add a text box/label to the bottom of the page that will calculate bonuses; if comp<25=0 if comp<50=1 else 2. I also want to have the CompBonus field then be entered into a new table so I can track bonuses for each player as well.
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Nov 3, 2004
I hope you can help - I have two simple problems and one slightly more complicated problem (bearing in mind I'm quite an Access Novice!)
Problem 1.
I have set up a simple form for a Timehsheet where the user can select a project and then enter hours worked in 7 text boxes for Mon-Sun. Then I have create a Total Text box at the end of the row. I need the Total box to Sum up the hours from the 7 boxes dynamically. How does one do this?
Problem 2.
How do I then ensure this calculated field populated the field hoursID in tblHours? (I am able to do this with a normal field, but with a calculated field, doesn't the formula go into the Controlsource field??)
Problem 3.
I plan to put this form as a sub-form into a main form 4-5 times so that a user can select 4-5 projects to enter hours against. I would like to have a SUBMIT button on the main form, so that all the calculated hours and selected projects populate the respective tables ONLY after this button is pressed.
Can this be done?
Thanks in advance!
Sunil
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Jun 11, 2013
I am currently working on a form that calculates the sum of counts and charges for various categories. The form sums the number of items in each category, then the sum of the charges. Where I am stuck is trying to break out the "per unit" charge for each category. The calculation works fine (sum of charges/sum of items) when there is a number greater than 0, but if the count or charges are 0, the fields display errors. I attempted to compensate for this by setting the text box value on the form to iif(iserror(sum of charges/sum of items),0,(sum of charges/sum of items), but it still shows the error!. I could probably write nested iif statements to evaluate the values of each sum, but you would think this would be simpler. Here is a sample of the actual ControlSource field on one of the text boxes:
=IIf(IsError([SumOfOracle_Qual_Dev_Charge]/[SumOfBaseline Qualified Developer]),0,[SumOfOracle_Qual_Dev_Charge]/[SumOfBaseline Qualified Developer])
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Apr 3, 2013
I have a dashboard that opens with my main form and it contains many textboxes with Dcounts, Dlookups and Dsums in it. I am hoping that I can put these textboxes on a separate form that is hidden unless a command button is clicked to make it visible.
I know how to do this, but my question is whether or not all of those queries will run whether or not the form is visible. Obviously if the Dsums etc.. are going to run anyway, then I won't bother.
Is there a better way to do this?
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Jun 8, 2012
I've got a data entry form that is used to enter incoming waste consignment data. (I've attached a screen grab of the form) Each screen represents one record and the data is recorded in a table called "IncomingWaste". The top of the form (light blue) refers to the customer/producer of the waste. Most of that detail is held in another table on the db. The bottom (Dark Blue) part is used to record the consignment data. It gives the user a grid to enter the individual waste components within the consignment (choosing from Drop down menus for the various descriptive elements) Most crucially, the weight of each component is recorded.
I have a calculated field at the bottom which gives a Total weight for that consignment. It simply adds the weight fields together and delivers a total in the box at the bottom of the screen which displays the total weight in that consignment using "Nz([weight1])+Nz([weight2)]+ ...etc - which works fine on the form. However, I can't seem to get this calculated total recorded and appended to each record in the table and I assume it must be re-calculated each time the screen loads (?)
The main issues is.... I need to create a report which adds the total weights from each customer over a monthly/quarterly period and I simply cannot seem to do it.
I have created the report which groups all the consignments from each customer and lists them in date order, but I can't identify or define the method I need to use to collect that Total Weight calculation from each consignment record and add them up to give a grand total for that customer for a particular period. I'm assuming if I can crack the first part and get the total recorded in the table, then I can call the value into the report.
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Jul 12, 2007
I would like my table to show the result of a calculations (or a formula). I surmise that you can not have a column cell calculate data, however if I can do this in the Form View and on a Report - can it just SHOW on the Table so I do not have to keep switching back and forth to see the information.
I am new to Access and think the forum will be a big help to me.
Thanks
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Dec 18, 2014
All I'm after is, to sum in all records "where" reconcileDate (on the sub=form) = today in both the credit and debit fields and minus one from the other. I have a simple form and sub-form. On the sub-form I have a query based calculation that returns the following..."if ReconcileDate (on sub-form) = today, then show Debit value in yndebit" textbox..Likewise with the credit box, and all works perfectly fine.
However, I can't seem to sum these two boxes. Because the circled textboxes are query based, I've used the query as the control source (and not the text boxes) and all I get is an #ERROR? when placed in the form footer. I've tried to do this using the textboxes as the control source, and still nothing. I've tried to add a calculated control on the form itself, and still #ERROR? or #NAME? despite knowing exactly how to reference subforms within forms (this I've become quite an expert at as I simply use query design to make sure I have the correct path and control)anyway.
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Jul 17, 2013
I have a form with a subform in a navigation menu. Something like:
Navigation Form
NavigationSubform
ParentForm (header data and some unbound calculation fields)
Subform (Multiple lines tied to query)
I have some fields in the ParentForm (i.e PF1, PF2) that would effect the values on the Subform (i.e. SF1, SF2). Also, there are some user editable values on the subform that will calculate the remaining fields on the subform (still using data from parentform).
My calculations work fine for the changes made on the subform. However I need to be able to calculate all the children lines on the subform when the form loads or a change is made to certain fields on the parentform. My On_Current event only wants to recalculate the first line.
Parent Form
PF1=10
PF2=3
Subform QTY ADJ SF1 SF2
Line 1 5 .05 10.6 112.89
Line 2 8 .14 10.38 105.15
...
Line N
SF1=PF1+(PF2/QTY)
SF2=SF1*(SF1+ADJ)
So if PF1 or PF2 were changed then all the lines is subform would recalc SF1 and SF2. If changes were made to QTY or ADJ, then that line would recalc SF1 and SF2.
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May 3, 2005
Hi ive made a query but instead of calculating the total at the end of each line I want it to add up the total quantity at the end.
For example:
ID Description Quantity
ID Description Quantity
ID Description Quantity
ID Description Quantity
ID Description Quantity
How do i get the query to add up all of those quantities?
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Oct 30, 2005
I'm hoping this is a no brainer...I am a complete newbie and self taught so apologies for not knowing the correct techie terms!!
I have a db with products...
Each product has a price (to customer) and cost (to me the seller)
What I want to work out is the margin i.e. price minus cost divided by proce multiplied by 100 to give a margin in percentage terms.
The data is held in a table with a record per product with the price and cost..
I want to build in another fieled per record that calculates the margin...
Thanks very much
Jessica
(I would also like to be able to work out decreasing margins if I was to extend say a 10% or 20% discount to the customer but I guess I shoudl walk before I run!!)
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Nov 15, 2005
Hi, I have a database and on one table I have dates stored for certain jobs. I was wondering if anyone knew how to automatically calculate an end date if the start date and duration is entered!
Do I use a certain query?
Hope you can help, Tobi :)
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Jul 26, 2006
Hello all,
I'm after some advice. Access is not one of my strong points (even though I use it alot in work!)
Anyway, is it possible to create calculations in access similar to those in excel????
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Mar 18, 2008
Ok I'm really new at using access so go easy on me. I am trying to write a database to keep 30 measurements of a part grouped by lot number and then calculate the standard deviation, mean and a few other calculations, however I am unsure about how to do the calculations in access.
I would like the database operator to be able to enter the data then print out a report per lot, with the entries and the calculated answers.
I'm just unsure where and how to do the calculations... any help or suggestions?
Thanks in advance!
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