Derived Fields (SQL)
Dec 4, 2005
Having a bit of trouble with a project, here...
I have a table that includes Employee's Names, Salaries, and Departments
(I also have a Department table, listing each Department)
I need to have a query that will return a listing of each department, the highest salary within the department, and the number of employees working in the department.
The only thing I've been able to do so far is construct a query that prompts the user for the department number, then returns the max salary or the # of employees. I'd like to have all that data in one output when the query is run, without prompting the user to input any values.
Thank you for any advice you might have for me!
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Apr 7, 2005
I'm new to Access and I'm trying to create a table to store students' information.
There is a "Birthday" field and an "Age" field in the table "Student".
I want to derive the "Age" value from the "Birthday" value. So that each time I just need to input the value of "Birthday" and then the "Age" value can be generated automatically.
However, I tried hard but couldn't find a solution.
Can anybody help me with this problem?
Thank you.
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May 5, 2013
I need to come up with a way to derive field X (see below) in a query.
For each change in field A, Set X=1
For each change in field B, X=X+1
The below table shows what the query results should look like.
A
X
B
[code]....
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Nov 2, 2004
I want to create an attribute called "order_line_price", which is basically the quantity field * the cost per product.
I have written the following SQL query which works fine:
SELECT Order_line.order_number, Order_line.product_number, product_name, quantity, (quantity*price) AS [Order line price]
FROM (Order_line INNER JOIN Product ON Order_line.product_number=Product.product_number) INNER JOIN Price_band ON Product.price_band=Price_band.price_band;
I can create a table from this query, and all is ok. However, I want to store the value of each order_line_price next in its appropriate row in my Order_line table. I cant do this no matter what I try. I know that what im trying to do is store a derived coloumn, however I need to do it, because I have an attribute elsewhere which is the SUM(order_line_price), which I want to limit by specifying the order_number for which to add the order_line_prices up for.
So basically, how can I store a derived column like that? I guess I need to set something up in the default value property and lock the coloumn or something?
Ive posted here before, and havent had replys. So if your reading this and dont know the answer, but do know the link to a forum or chat room with speedier replies, please post the link.
Thanks.
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Sep 9, 2004
I have an issue with some displaying from a query. I have tables as follows:
#1Clients
Col1: Autonumber
Col2: LastName
Col3: FirstName
#2Accounts
Col1: Autonumber
Col2: Drop down to select a concatenation of Lastname & FirstName. These fields are numbers from table #1 that display the corresponding names.
Col3: ...
My query code below does work. However, it displays 1 - 1 - Account Name. I would like the actual "contact name" and actual "account type", not their corresponding unique numbers.
Code:SELECT Accounts.[Account ID], Accounts.[Contact Name] & " - " & Accounts.[Account Type ID] & " - " & Accounts.[Account Name] AS [Account Details]FROM AccountsORDER BY Accounts.[Contact Name];
Any hints?
Thanks
C
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Nov 26, 2007
I don't have any database experience whatsoever so please go easy.
I'm guessing this kind of this is extremely simple for all of you.
I'm constructing a database of network resources and devices and I'd like to automatically update the values in one field based on the values of a field in another table.
The first table is called "IP" and the fields are called "Address", "IP Type" and "Device".
The second table is called "Devices" and contains the fields "Name", "Description", "Asset Number" and "IP".
Here's an example of the tables: (ignore the "code" tag. i've only used it to align my columns properly)
DEVICES:
NameDescriptionAssetIP
XserveFile Server107203.30.144.75
ProliantXDHCP119203.30.144.15
IP:
AddressIP TypeDevice
203.30.144.75Static
203.30.144.15Static
What I want is for the Device field in the IP table to automatically update it's values based on the values found in the Devices table. In this case, the values that should appear in the Device field in the IP table are "Xserve" and "ProliantX".
I've searched through but haven't found a complete solution, just little pieces which I'm too inexperienced to put together myself.
thank you
-Tim
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Apr 13, 2008
I created a form in Access that retrieves data from a table. Inside the form, I am able to access/populate data fields with data from the table. I also have data fields, inside the form, that requires key-in data. I have some how lost the ability send all data field information to a second table and clear existing data fields for new entry.
Questions: What settings, code or buttons can I use to send/store data field information to a new table? What settings, code or buttons can I use to automatically clear all data fields from my form once data has been sent to the new table?
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May 17, 2007
I have main form and that has one sub-form , this Main form governs/determines the data in the sub form.
This Sub form ( DataSheet Mode) has approximately 130 columns and based on the Main form criteria only ~ 20 columns has to be filled.
What I want to do is based on the main forms criteria I want to show only the columns that are applicable to main form criteria.
If I use Columnar or Tabular single form for the Sub Form I am able to hide the fields that are not required BUT IT LEAVES A SPACE/GAP on form ( for the hidden fields that are not required)
Private Sub Form_Load()
If Forms!frmShowPIforActiveAndCanAddNewPI!FrmSubFrmFi lterProductInformationPerFMT!CASETIF = True Then
Me.CASETIF.Visible = True
Else
Me.CASETIF.Visible = False
End If
End Sub
And If I use DataSheet and hide ( visible = no) a particular filed it still shows up in Sub Form
Is there a way to Auto-Re Arrange all the fields in the sub form so that the hidden ( visible = no) fields no not leave gap
Or is there a way by VBA program to select fields ( Columns) from a table to be displayed on a sub form based on a criteria
Thanks
Rahul
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Jan 29, 2014
I have a totalquery that runs fine and give me the sum for both fields I'm looking for but I can't get the outputs to fill the fields on the form. I have tried the Dcount query in the control source but that just returns an error and locks up access.
Code:
SELECT [Tble-wcDelays].Causedby, Sum([Tble-wcDelays].HoursDelay) AS SumOfHoursDelay
FROM [Tble-wcDelays]
GROUP BY [Tble-wcDelays].Causedby, [Tble-wcDelays].LinkingID
HAVING ((([Tble-wcDelays].LinkingID)=[Forms]![Frm-ePlusCent]![cleanID]));
That is the query.
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Jun 28, 2015
I have a query that creates counts of fields based on the data in other fields, basically it tells me that in a table there are two entries with value ABC????? and three of DEF????? , the query works perfectly.
When I create a form to display this data and base the form on the Query I keep getting a message box asking for the ID (key field) from the base table.
If I type * in the box (to denote all values) and press enter I get the results expected.
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Nov 18, 2013
Basically in my order details table i have the following fields
Product
Unit
Size
At the moment i have the Product field with a dropdown that gives me all the products from my ProductT. But once i choose the correct product in the unit field it gives me all the possibilities of every product not just the units associated with that product. ie
ProductT
Grasshopper Box1000 Adult
Grasshopper Box1000 Subadult
Worm 10pz Big
When I select the grasshopper product and move on to the unit field i also get "10pz" option but this is not a product available.
How do i set up validation of the fields Unit and size based on another fields data?
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Aug 27, 2013
I have a database that will register the emails coming in and what time, also the time, date out and person.
I have a form with the fields to be filled in and a submit button. There are some fields that are automatically filled in and others need manually fill in.
below that part is a sheet (subform in the form of sheet) that should be filled in with the above data. Once it is there, it should empty the fields so they are ready to be filled in again. If I fill new data and press the submit button, it should go to the next available row.
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Aug 21, 2013
I have a copy of the back-end that gets a search key error 3709 on two records. In other words, I can duplicate the problem.
The interesting part is that I can update any other field on both these records and save the record, but when I try to change two specific fields, I get a Search Key Error and have to ESC out to continue (basically UNDO the change). Both fields are text fields with lengths of 7 characters and 255 characters, and both are COMBO Boxes on the form.
I tried to focus on the form think there was an issue in the code. I can definitely TRAP the 3709 error on the ON ERROR event on the form using "if dataerr = 3709", but then I tried something even simplier.
I went directly to the table and to each of the records. Again I can update any other field in the record but these two specific fields. When I try to change either of them and move to another record, you get a Search Key Error 3709.
By going to the table record directly I'm as low level as I can get. There are no validation rules on either field at the database level. If it was truly CORRUPT would it let me update any of the other fields on either of these records? One is an empid (not a primary key but is indexed with duplicates okay and not required), and one is status code (not a primary key but is indexed with duplicates okay and not required) so they're no critical fields, but something is keeping them from CHANGING.
Just tried something else; deleted the INDEXES on both the fields. Now it works! I am completely confused now because it really wasn't a corrupt record, but the indexes are causing the problem. Do I need to update the indexes somehow when the users selects a new empid or status code?
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Apr 22, 2015
I have a product table that includes the name of the product, the quantity ordered, and the unit price. This is a summary table for the whole year showing all of the orders. The Primary Key is [ID] from the [tblOrders] table. I attached a screen shot of my query. I don't know if you can see it. I want to generate a report where each product is listed once, the unit price for that product is listed, the total number of that item that was ordered throughout the year, and finally, the total amount spent for each item during the year.
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Nov 2, 2005
How can I get some mainform fields' data to be the first entry in a subform? From the mainform, I would like the Head of Household name and date of birth to be carried over to the first entry in the HouseholdMembers subform.
The two forms are tied to separate tables. For each household member I need to be able to enter full legal name, date of birth and some additional pieces of information such as income and source of income.
What I'd like to avoid is making the users enter the Head of Household's name and date of birth twice. Is there a way to carry that information over to the subform?
Thank you, Charlotte
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Jun 20, 2006
Hey Everyone,
I am stuck trying to figure out this problem. I have a main form "frm_tirelog_600" which has 4 combo boxes "cboleg",
"cbocar", "cbopos", "cboserial" on it. The first 3 combo boxes are used as criteria on 1 of 3 subforms that I have.
The fourth combo box "cboserial" is used for the criteria in a query on another subform that I have called "frm_mount_600_subform",
which is independant from the main form, I hope I have explained that clearly enough. What I need to be able to do is
have the subform fill in 3 of the fields on it "leg", "car", "pos" with the value from the 3 combo boxes on my main form. I
can get it to show in the fields but not write to the table. I have searched the forum and have not been able to locate anything
that would work and really need any assistance with this. Im not real strong in the coding department which is where I
beleive this could be done.
I have attached a copy of my DB which I hope will better explain it. Any help would be greatly appreciated
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Aug 30, 2004
I have a combo box linked to a look-up table. There are 8 fields in the look-up table but only if one of three is chosen do I want additional combo boxes to become visible. Do I put the code in the "after update" or "on change" event of the combo box and how do I express the code-
If TechniqueCombo="caudal" or "spinal" or "epidural" then
TextNeedleType.Visible=True
(am I close??)
Thanks
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Aug 28, 2006
Hey,
The database I am working on, I split a while ago to give it some security. Now i'm updating a related form, and i'm finding that if I delete and add fields in the BE, the FE fields (being the fields that I need to insert into the form so the data entered propogates to the DB) are not updated.
How do I update the FE?
Thanks.
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Aug 15, 2013
I reached the limit of 255 fields in a table. I just need to add one more field so I deleted several fields I no longer needed thinking I would then be able to add one more new field. However, I am still unable to add one more field. How to free up fields that are no longer needed?
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Aug 4, 2005
I have two tables - Hours and Employees. Employees table has these fields:
EmpID, and First, and Last name.
Hours table has these fields:
EmpID, Hours, Funding Source, Nature of Work, Pay Period
I need to produce a report or a query that will display these results:
A column with a list of all the employees and all the Nature of Work categories going across with the sum of hours for each Nature of Work. I'm attaching an Excel spreadsheet that shows kind of what I need. Also, these reports need to be produced for each Funding Source and
Pay Period, so something like [Enter Funding Source] and [Enter Pay Period]
My question is that I don't know how to make a report that will just list a column with all the names and count the sum of hours for each Nature of Work.
Hope this is not too confusing, and any help would be greatly appreciated. thank you!
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Jun 6, 2007
Hi,
I am creating a small database to house results of certain tests. Is there a function in access that allows me to add fields if a result is out of the specification required. In other words I still need to record the out of spec results but I also need more fields to appear for the next lot of results to be entered, for example.
When cooking a batch of product I need to test the pH at the 30 minute mark if the pH is too low I will continue cooking the product for another 30 minutes and then test the product again. The cook time is not a constant so I never know how many samples are required, therefore I don't know how many fields i would need in advanced.
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Nov 30, 2004
Hi,
I hava a small dbase in which we store address information. Now you have a visit address, a mailing address and billing adress.
I want to use some buttons which trigger macro's to fill in these "Secondairy" addresses FROM the visit adress.
So a buttun that says: copy billing address from visit address. and then the street, Number, PO box en city will be copied from the visit address to the billing address.
It's probably possible through a macro but I'm having a hard time coming up with the syntax. Or it there an easier way? :confused:
I hope you guys can help me out. THANKS!!
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Jun 28, 2006
Hello all,
First post :) found some great tips on here. Anyway here is my story and question.
I am new to Access development. I know what I want to do, I just can not find a way of doing it :( .
1) I would like my form to only be editable when an edit button is clicked. I am not sure if I can do this on a form level or if I have to change each individual part. Any ideas?
2) I capture some clients details, title, first name and last name. I then need to merge the above 3 fields into one to create a 'policies in the name of' field. Is this posisble? I have tried using the initial value expression but am having no luck. Any ideas?
Thanks all :)
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Sep 25, 2006
Ohh Stress. Need Help....I have a mainform that contained two subforms in it. MainForm called "Employee", the two subform called "vac", and "Prevac". There is a field in my mainform called "Hours", that I'd like to use to Add with a field in Vac subform called "VacA" and a field in Prevac called "FHours". I'd like to display the total (sum of all three field on the same mainform. Is there anyone have any idea? Thanks in advance...
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May 29, 2015
I am working on MS Access program where i import data from Excel and i would like to generate a report in MS Access where the fields are empty. Like the MS Access generate a table of errors when we import data and shows information like field name and row number along with Type Conversion label. Can i generate similar table from an MS Access table where fields are null.
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Jun 26, 2012
Is there a way to populate fields in Access from fields in Excel in Office 2010? If so, what do I need to do?
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