Calculating Values
May 2, 2006
I am not sure whether I posted in the right place but here's the deal: I have a form and a subform based on two tables and on the form I create a mathematical expression concerning a field which is based on another. The results are correct but of course the values in the table remain the same (null). Is there a way to have a formula in the table and then when I create the form based on that table to have the formula ready? BTW where are the data stored if they are not stored in that table?
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Nov 24, 2005
Hi everyone
i have been struggling on this database that i am developing for a while and i haven't found a solution yet.
i have a Two tables
Table 1
"Attendance" with fields
Attendance ID,
Hours,
Group ID.
table 2
"Days" fields,
Day ID
Week beginning
Monday
Tuesday
Wednesday
Thursday
Friday
Hours
now i have created a form from these two tables, and what i wanted was each day of the week i will input a value under the day and i wanted it to be added up and then the result outputted to the "Hours" Box.
My dilema is that although i have figured out how to add up the fields in the form view by changing the Control source for the Hours box to something like
=[Monday]+[Tuesday]....[Friday]
this will only display the value in form view, the table will not update. i guess this is because the control source is not relating to te table anymore.
so if someone has some other ideas i would appreciate it.
regards
Yusef
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Aug 30, 2004
Just wondering if anybody could help me on this. I have encountered a problem in producing a report based on my main form (recordsource: tblStudents) and subform (recordsource:tblStudentsClasses), which are joined through their respective StudentID fields. My problem pertains to the fact that I just couldn’t seem to find a way to make my report produce a calculated value using an unbound control. I need it to show the average grade a student gets every semester by multiplying his individual class grades against its corresponding credit units and then add them together, and divide them against the sum total of that particular semester’s credit units. For example, a grade of 1.0 for psychology 101 multiplied by that subject’s 3 credit units + a grade of 2.0 for chemistry 101 multiplied by that subject’s 5 credit units and then divided by the sum total of those two subject’s credit units of 8.
I kinda find it complicated because each semester is made up of between 1 to 10 classes, so it would be inappropriate to just put the one average computation on a footer since each semester has to have an average grade of its own. Tried lots of procedure already and couldnt make anyone of them work. Another fact is that a credit unit of –3 and grade of 5.0 shouldn’t be included in the computation at all. And some of my data are supplied by combo boxes in the subform – cboCreditUnits and cboGrades (rowsources: tblClasses and tblGrades). How should I go about this all? Any ideas will be highly appreciated.
Thanks!
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Apr 15, 2008
Below is the code I have created to calculate the values "CalcValue" and "CalcWork". The values for AssignValue, AssignPriority, Complex, Effort, Goal are all assigned by the selection made in the referred to/related combo boxes. However, the caluclated values return the concatonation of the intergers and not the sum of the integers. Additionally, if I am to use the CDec() function how do I specify the number of decimal places?
what am I missing here?
thanks!
Private Sub cboAssignPriority_AfterUpdate()
Dim CalcValue, AssignValue, AssignPriority, Complex, Effort, Goal, CalcWork As Integer
Value = 0
AssignValue = 0
AssignPriority = 0
CalcValue = 0
CalcWork = 0
AssignValue = Me!cboAssignValue.Column(3)
AssignPriority = Me!cboAssignPriority.Column(2)
Complex = cboDBObjectID.Column(2)
Effort = cboTaskTypeID.Column(3)
Goal = cboAgencyGoalID.Column(2)
Value = AssignValue + AssignPriority
CalcWork = Complex + Effort + Goal
CalcValue = CDec(Value)
CalcValue = Me!lngCalPriority
Debug.Print "Complex="; cboDBObjectID.Column(2)
Debug.Print "Effort="; cboTaskTypeID.Column(3)
Debug.Print "Goal="; cboAgencyGoalID.Column(2)
Debug.Print "AssignValue.Column(3)="; cboAssignValue.Column(3)
Debug.Print "AssignPriority.Column(2)="; cboAssignPriority.Column(2)
Debug.Print "Value ="; Value
Debug.Print "CalcValue ="; CalcValue
Debug.Print "CalcWork ="; CalcWork
End Sub
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Mar 15, 2006
I have a table with numberous records with Values in a number of fields. In a report I am showing all these records but at the end I want to tally the values.
Whats the best way to do this?
I thought of placing a text box in the form that will run some code to calculated the total....
What kind of code would I use to accomplish this?
Is there an easier way?
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Jun 16, 2006
I have a report that contains 3 subreports with a calculated total text box in each. I am trying to calculate the total of these text boxes from the subreports in the main report but I keep getting an error message (#Name?). Is it possible to calculate calculated sums from subreports in a main report?
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Jan 30, 2006
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
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Jul 7, 2006
Hello all. I hope someone can lend a helping hand here. I am trying to create a query that will calculate a 24 hour value for every day of a month. For a month a go out a read meters. I need to get the difference of two readings by subtracting the first day from the second day and so on until I get to the end of the month. So, Day2-Day1=24 hour value, Day3-Day2, Day4- Day3... I have this in a spreadsheet but can't seem to grasp it for a query in a database. I would appreciate any help. Thanks.:confused: :D
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Nov 12, 2007
Hi, I wonder if someone can help me with the following problem:
I have a table with 2 columns,start time and end time, both containing time values in a four digit format, eg 0930 being 9:30am etc.
I have made a query to convert these into the standard format (eg 0930 becomes 09:30), using left/right and & functions.
Now I use the timevalue function to convert the string , eg 09:30m into a recongnised time value.
The problem is now I want to find the difference between the start and end times- but when i try a simple end_time - start_time formule it returns a long number which i dont understand, rather than just giving me the difference betwen the two times.
Im sure there is a simple way to do this which I dont know, can anyone help me out? Thanks in advance!
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Nov 12, 2007
Hi, I wonder if someone can help me with the following problem:
I have a table with 2 columns,start time and end time, both containing time values in a four digit format, eg 0930 being 9:30am etc.
I have made a query to convert these into the standard format (eg 0930 becomes 09:30), using left/right and & functions.
Now I use the timevalue function to convert the string , eg 09:30m into a recongnised time value.
The problem is now I want to find the difference between the start and end times- but when i try a simple end_time - start_time formule it returns a long number which i dont understand, rather than just giving me the difference betwen the two times.
Im sure there is a simple way to do this which I dont know, can anyone help me out? Thanks in advance!
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Jul 29, 2015
we have a field in a report, and currently, there is a text box with a control source of
=IIf([Flag1]="Capital",[Reserve]-Sum([Text52]),"")
They want me to add to it, where if [Text106]="0",[Reserve]-[Text52], otherwise it's [Text106]="0",[Reserve]-[Text106].I am able to do this second part OK with
=IIf([Text106]="0",[Reserve]-[Text52],[Reserve]-[Text106])
But then I lose the [Flag1]="Capital" part.
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Aug 12, 2015
I have a query that must calculate the different between values in two different records, based on the date.
The underlying ORIGVALUES table contains:
Date; Value; Diff
1/10/15; 100; (this is what I am trying to calc)
1/11/15; 101; (this is what I am trying to calc)
1/14/15; 102; (this is what I am trying to calc)
What is the best way to have each record calculate the selected date value divided by the prior date value)? E.g.
For 1/11 the math is 101 / 100 (so the 1/11/15 record would show the result of 1.01)
For 1/14 the math is 102 / 101 (1/11 to 1/14 represents a weekend)
I could copy the prior day values to the current day records and do that math easily but that is very redundant.
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Jan 2, 2014
I have created a link to a CRM system that we have, and am using access as an interface for a specific task with the data contained within this CRM.
I have written a query that pulls to fields of data together but cannot get the two to calculate.
Within SQL server management studio I use the following query to give me a numerical response.
SELECTPRCPRICE,SUM(CAST(VL2BENEFICIALASNUMERIC (20,6))*CAST(PRCPRICEAS MONEY)))ASHOLDINGVALUE
Access doesn't appear to accept the cast functionality / how I can perform a similar functionality with access?
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Feb 24, 2012
I am using workdays to calculate time passed between two dates. I also have a table for Holidays that I don't want counted as work days. This is working well, but I would like my queries to show a null value instead of showing #Error when a date field is empty. Here is my coding in my Module.
Option Compare Database
Option Explicit
Public Function Workdays(ByRef startDate As Date, _
ByRef endDate As Date, _
Optional ByVal strHolidays As String = "Holidays" _
) As Integer
[code]....
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Mar 10, 2014
I'm trying to create an expression to calculate percentage.
The fields, Value A and Value B might both have null values, but I do not want Access to treat nulls as zero (as in the Nz() fn). How do I get the expression to exclude any nulls and not calculate for those rows, but set the calculated value for a row with null A or B to zero.
I want it to set no calculated value to zero so I don't get overflow errors and can therefore order the data by the calculated field.
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Aug 6, 2014
I have a report in which a textbox generates numerical values and letter values. I want to...On report load - if textbox = numbers then hide otherwise show if it contains letter values.
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Aug 29, 2014
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).
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Dec 5, 2014
I have the following dataset in a table called NR_PVO_120. How do i pick out a number (which can change but let's say, 6) of UNIQUE OtherIDs without excluding any OtherIDs under any fax numbers?
So, if you pick OtherID from Row7 you then also must pick OtherIDs from rows 8 and 9 because they have the same fax number. Basically, once you pick an OtherID you're then obligated to pick all OtherIDs that have the same fax number as the one you picked.
If the number requested (6 for this example) isn't possible then "the closest number possible but not exceeding" would be the rule.
For example, if you take OtherIDs from rows 1-10 you will get 6 unique OtherIDs but row 10 shares a fax with rows 11 and 12. You either need to take all 3 (but that will raise the unique count to 8, which isn't acceptable) or skip this OtherID and find one with a fax that has no other OtherIDs and that isn't on the result set already. My result of 6 UNIQUE OtherIDs will need to contain ALL OtherIDs under any fax the existing OtherIDs are connected to.
So one solution is to take rows 1-6, 26. Another is to take rows 1-4,10-14.
There will be many possibilities (the real dataset has tens of thousands of rows and the number of people requested will be around 10K), as long all OtherIDs connected to all faxes on the result set are part of the requested number (6 in this case) any combination would do.
A few notes.
1.Getting as close as possible to the requested number is a requirement.
2.Some OtherIDs will have a blank fax, they should only be included as a last resort (not enough OtherIDs for the requested number).
my table (NR_PVO_120)
Row OtherID Fax
1 11098554 2063504752
2 56200936 2080906666
3 11098554 7182160901
4 25138850 7182160901
5 56148974 7182232046
6 56530104 7182234134
[code]....
A few sample outputs
one solution is taking rows 1-6 and 26.
OtherID
11098554
56200936
25138850
56148974
56530104
56148975
Another solution is taking rows 1-4 and 10-14.
OtherID
11098554
56200936
25138850
56024315
56115247
56148974
This is for a fax campaign, we need to make sure no fax number is faxed twice, that all people connected to that fax number are contacted under one fax sent.
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Sep 17, 2013
In Access 2010 I have a Data Entry Form on which I have an unbound textbox in the header that the user can put a default date in. In the body of the form is a bound textbox that records the date and the default value is set as =defaultdatestat (obviously the name of the box in the header).
Problem: The default date shows up perfectly until a value is put in any of the other text boxes.
For further info : If you put values in text boxes default value disappears; if you then push escape the default value reappears when the values in the text boxes disappear.
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Sep 18, 2013
I have a query with an INNER JOIN and ORDER BY that is working great. Now, using the same JOIN, I need to update values in one table with the values in another. I thought it would be simple until I learned you can't do an ORDER BY with an UPDATE. Is there another way to achieve the same result? If you remove the 'ORDER BY', the statement below doesn't produce an error but the results are not correct:
UPDATE TableA INNER JOIN TableB ON (Left(TableA.CDN,6))=(TableB.CDN)
SET TableA.HCC = TableB.HCC
WHERE TableB.HCC Like '241*' AND TableB.BBB = 'X' AND TableA.CCC = "1234" AND TableA.HCC IS NOT NULL
ORDER BY TableB.HCC, TableA.CDN;
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Nov 22, 2013
I have several result fields which are all drop down lists. I want each result field's drop down list values to be different depending on the selected value of the Test1 drop down list.I came up with using the .rowsource keyword. My syntax seems to be fine but I'm not getting any values under the result fields when I run the form.Here is my code so far:
Private Sub Test1_AfterUpdate()
If Me.Test1 = "Stress Echo" Or Me.Test1 = "Stress SPECT" Or Me.Test1 = "Stress PET" Or Me.Test1 = "Stress MRI" Then
Me.Test1Result2.RowSourceType = "Value List"
Me.Test1Result3.RowSourceType = "Value List"
[code]...
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Nov 3, 2005
I'd like to create a query which will consist of simple SELECT statements as follows:
SELECT [table1].[field1], [table2].[field1], [table2].[field2]
FROM table1 INNER JOIN table2 ON ([table1].[fieldX] = [table2].[fieldX]);
The challenge arises b/c instead of joining on equal values, such as the following:
[table1] INNER JOIN [table2] ON [table1].[field1] = [table2].[field1]
I would like to join based on equivalencies, such as:
[table1] INNER JOIN [table2] ON [table1].[field1] = 34 is equivalent to [table2].[field1] = 2;
I do not know the proper syntax, so this is where I need help. I tried to search online without any success.
I appreciate your help in advance.
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Jun 18, 2013
I'm trying to determine the SQL to return only those records in a table which have duplicate values in each of two fields, but different values in a third field. Here's an example:
Code:
AcctNum FoodType FoodClass
------- -------- ---------
A123 Apple Fruit
A123 Apple Fruit
A123 Grape Fruit
A456 Potato Vegetable
A456 Potato Perishable
A789 Carrot Vegetable
A001 Banana Fruit
For the above table, I'm trying to return records which have multiple entries for AcctNum + FoodType, but DIFFERENT values for FoodClass. So for the above table, the query would return:
Code:
AcctNum FoodType FoodClass
------- -------- ---------
A456 Potato Vegetable
A456 Potato Perishable
It returns these two records because there is more than one record with for the AcctNum + FoodType (i.e. 'A456' + 'Potato'), but DIFFERENT values for FoodClass (i.e. one record has 'Vegetable' while the other has 'Perishable').
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Mar 2, 2015
I have two tables.descriptions I'd like to relate and use to find/replace in bulk.
[Checking].[Description] (with the source data)
[Rename].[NewDescription] (with the correct data)
I'd like the values in [Checking].[Description] to be replaced with the values in [Rename].[NewDescription], including those that are "Like".
Examples:
[Checking].[Description] = Geico 12345
[Rename].[NewDescription] = Geico
[Checking].[Description] = Geic
[Rename].[NewDescription] = Geico
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Feb 19, 2007
I have a table with 2 coloums with nuberin them. I would like to add those 2 number together and display them in a 3rd coloum. I need to automatically change the 3rd coloums value should any others change. Is this possible?
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Jan 19, 2007
age: DateDiff("yyyy",[DOB],Now())+Int(Format(Now(),"mmdd")<Format([DOB],"mmdd"))Dob is stored yyyyddmmI thought this above function looks ok. When I run it, I get a data type mismatch in criteria expression.What am I missing?Any help would be appreciated.Thanks
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