I have read a number of these threads now where it says you should not generate new records based on calculated fields. So can some one help with my following problem.
I am creating a customer/contract database where when an order is created, a record set is generated to store dates for invoice periods. I have done this by using the start date of the contract and then adding onto this a value of x days that updates a table giving y records based until the end date of the contract.
Is this the best way to do this or can some one tell me a better way.
Thanks
(Phone usage report) I have 3 queries, Query 1 counts number of calls in for a phone extension. Query 2 Counts the number of calls out (dialed calls). The information is keyed on the phone extension. Query 3 runs the first 2 queries (By date via parameter). Each query is keyed on Extension, I only want to see the number of calls in and out for each extension. Problem, when a phone extension being counted has no calls (In or Out), it leaves the phone extension out of the report. I want to see all the phone extensions info regardless of the count (if it = 0). Does anyone know a way around this? Thanks in advance for your help.;)
I have a table for storing vehicles. The table contains the following fields:
VehicleID Make Model Trim Build Date Begin Build Date End
Vehicle Name - a concatenation of 'Make' 'Model' 'Trim' 'Build Date Begin' and 'Build Date End'
The 'Vehicle ID' is the primary key, the rest of the fields can't be indexed with no duplicates. Is there a way of preventing one from saving a duplicate VehicleName on the table since it is a calculated field.
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 new to Access and this is likely a very elementary question. I recently created a database to track status of projects including progress and funding. The table contains several fields that record various aspects of funding. These fields are added (very simply) and create a calculated field that is a summation of those fields. The table currently contains approx 60 records. The calculated field functions for 2 or 3 records and will not calculate further. I have tried this in a form as well as a query. The form will change the same number, 2 or 3 records. When the query is run the result shows only the 2 or 3 records. What I am doing that is only reading and modifying those records?
I have a calculated field in a query. The field name is TotatPt (this is to calculate the total points students have earned during the term). The expression is as follows:
I think this should be no complicated expression (though a bit long) and should just add the fields together. But what I get is that the calculated field appears as expected for records with an odd primary key (1, 3, 5, 7, ...) and turns out blank for records with an even primary key (2, 4, 6, 8, ...)!
So I have a report with the following text box controls:
[Surname] & ", " & [Firstname] =Sum([Quarter1_A]) - Named "Quarter_Total" =Sum([Quarter1_T]) - Named "Quarter_Target" =Val([Quarter_Total])/Val([Quarter_Target]) - Named "%Target" (Percent Format)
The report is grouped by the expression '[Surname] & ", " & [Firstname]'.I am trying to sort the records by the %Target text box. I tried entering the expression into the sort function but it still sorts by the grouped expression. I also tried sorting by the name of the text box but got the same results. How can I sort by the desired control?
My query contains two calculated fields [TaxSavings1] and [TaxSavings2], which are based on some currency and number-type fields in one of my underlying tables.
I just created another field in my query which looks like: [TaxSavings1]+[TaxSavings2]. Instead of adding the two fields, it actually lumps the two numbers together. For example, if [TaxSavings1] =135 and [TaxSavings2]=30.25, it will give me: 13530.25. I need it just to simply add, i.e. answer of 165.25.
Does anyone know how to correct this? Thanks in advance.
I know it is said that you should not store calculated data in tables so I need some input on how to go about a problem I am having.
I am creating a DBase with some aircraft info in it. The DBase will be around for awhile so I plan to implement so sort of archiving later on.
The problem is one piece of info I am tracking is flight hours for the aircraft along with hours on certain components. I have a table with info pertaining to each aircraft by number (1 record per aircraft) one of the fields is total current flying hours. I have another table that has individual flight info including number of hours per flight. I want to add the individual flight hours with the total flight hours to get a new total flight hours. Easy with a query but if I get rid of old flights then how will you add them in the query. The only thing I can think of now is to save the newly summed number in the table which is supposedly taboo. Same with the components if it is on the aircraft during the flight it needs to get the new flight hours on it also .
Sorry if this is trivial but any ideas on how this should be done would be great.
Hi, I have a calculated field in a query that concatinates an order number prefix and the part number to give the order number: OrderNum: [OrderPrefix] & [PartNum]
This works fine except for one of the categories. For the third category there are no entries in the tblPartsList - because they are miscellaneous.
How do I change the calculation so that it works as above where there are corresponding Part numbers in tblPartsList and otherwise gives me the order number and any 2 digits e.g. something like [OrderPrefix]*
Having been trying to do this for ages but having trouble with syntax.
hi. i wanted to kno how to have a field in a table that is calculated from other fields if this is possible. for example i have a order table which has a quantity field and a price field and i want to add a total field that will alutomatically calculate the total (quantity*price) and add it to the field. i know how to do this in a query but don know how to get that field from the query into the table. thanks for any help
I was once told that Access does not like to store calculated values but I would like to.
Here is my expression: =([Shift Lenght]-[Total idle time]-[Total down time])/([Shift Lenght]-[Total idle time])*(0.33*[Total pc])/([Shift Lenght]-[Total idle time]-[Total down time])*([Total pc]-[Total scrap])/([Total pc]+0.1)*100
This gives me the value that I desire, now I need to store it in the table with the rest of the records data. I am planing on storing 3 -4 expressions like this and then averaging them. Then building a query to the averages for the day,week,month, and year.
Please be gentle I am not very familiar with access but learning a lot:)
I heve started a new table and one of the fields is Date of Birth.
I want to have another field that looks at the data in DOB and calculate the age, I believe that this can be done with funtion datediff, but the layout doesnt look for other fields, it just looks for a date and the Now statement.
Any ideas on how to make this work? does it have to be a querie?
I heve started a new table and one of the fields is Date of Birth.
I want to have another field that looks at the data in DOB and calculate the age, I believe that this can be done with funtion datediff, but the layout doesnt look for other fields, it just looks for a date and the Now statement.
Any ideas on how to make this work? does it have to be a querie?
I heve started a new table and one of the fields is Date of Birth.
I want to have another field that looks at the data in DOB and calculate the age, I believe that this can be done with funtion datediff, but the layout doesnt look for other fields, it just looks for a date and the Now statement.
Any ideas on how to make this work? does it have to be a querie?
I have a table with customers, one with products and one transaction table. How can i produce a report, based on a query that will add up the total any one particular customer has spent to date from the transaction table?
hi. i wanted to kno how to have a field in a table that is calculated from other fields if this is possible. for example i have a order table which has a quantity field and a price field and i want to add a total field that will alutomatically calculate the total (quantity*price) and add it to the field. i know how to do this in a query but don know how to get that field from the query into the table. thanks for any help
i have opened a field (which was created in a table) in a form as a calculated fieled the calculations are ok but only in the for the same field in the table remainded empty
how can it be set so the table's field will get the clcaulation ?
I have this query which selects two fields and calculates it in another field. But the calculated field has more than 1 expression.Eg If field A < Field B,Field B + Field C AS X,If field A < Field C,Field A + Field C AS Y.The problem is that when I show this on the Form I want only 1 of the fields to be shown ie either X or Y .if any of the expressions is satisfied then only that field should be shown as a textbox control on the form and not both.How do I do this?? Its really complicated for me..Pls help..
I have two email addresses in a table one personal and one work and a question asking which to use, I have a query running from the table and have an IIF expression creating a field which looks to see which one to use (that all works fine !) anyway my client has now asked for an extra field in the query which combines the two email addresses, as in aaa@homedomain.com;bbb@workdomain.com so that I can run an email to both addresses at the same time. fraid I just can't figure it out ! I'm sure it's obvious, I can't find a similar question posted either, I've tried the expression builder using AND for the two email addressses but just end up getting -1 in field when I run the query, not the two email addresses separated by a ;
In one of my queries, I'd like to reuse a calculated field as criteria in the Where clause. SQL seems reluctant to want to do this. You can RESTATE the calculation in the Where clause, but can't refer to it by Name. You can Order by it, but it can't be in the Where clause.
If the query result set consists on a set of Named columns, why can you refer to a calculated column by Name in the "Order By" clause but not in the Where clause?
Why is this OK?
Select FldA As FirstField, FldB As SecondField, FldA - FldB As TheDifference <-- Just a calculated field From SomeTable
And this is OK?
Select FldA As FirstField, FldB As SecondField, FldA - FldB As TheDifference From SomeTable Order By TheDifference <-- Order By is OK
And this in not OK?
Select FldA As FirstField, FldB As SecondField, FldA - FldB As TheDifference From SomeTable Where TheDifference > 100 <-- Can't use TheDifference in Where clause
Don't want to repeat the calculation.
Select FldA As FirstField, FldB As SecondField, FldA - FldB As TheDifference From SomeTable Where FldA - FldB > 100 <-- I know this works, but ... Order By TheDifference