Calculating Field Specific Averages From Records In Separate Tables
Apr 28, 2014
Let's say I have a table sort of like this one: [URL] .... (Table 1)
What I want to do is make another table that references the first table: [URL] ... (Table 2)
I want the cells in the Average field in Table 2 to calculate an average of all the values for records in Table 1 with Color fields that correspond to the Color field in Table 2 (this makes a little more sense if you look at the pictures). I could do this in Excel, but then problems would arise whenever I would add a new entry to the database, or re-alphabetized the data, since Excel math is depends entirely on the positions of cells, and I want these averages to be continually calculated correctly and to change whenever I add related records to the database.
I have a database containing values in 16 fields. the fields are filled in over a period of three years. I would like to be able to calculate the average of the last four values entered, regardless of when in the cycle the value is required. I have tryed to use quereies but connot find away to assign the four fields to the expression so that it is the last four values and if four don't exist, avearage what values there are.
Im in need of some help with a query that i am trying to set up. I have a table with data shown roughly below. And need to extract the average [call length] for each heading of [Call type] on a given date.
Ie. The query will be run and the date can be inputted. It would the display each category only once and the average of that category.
Is there a way to calculate three different rolling averages in one query?
I just inherited a database where someone is using three queries to capture the same information only with different time frames. They were calculating a rolling three month average, six month average, and twelve month average. I would like to combine these queries into one to reduce time spent running reports from the database. All three queries are based on one table. One of the columns in that table is called "Month Start Date". That field shows the first day of the month when a call was entered. I can get the query to tell me the first month in the three month period and the first month in the six month period, but I can't get it to calculate the averages of the calls that fall in those time frames. Here is the SQL for the query I have now. When I try to run this, I get the error message that my formula is not part of an aggregate function.
Code: SELECT DISTINCT DateAdd('m','-2',(Max([Month Start Date]))) AS ThreeMonthStartDate, DateAdd('m','-5',(Max([Month Start Date]))) AS SixMonthStartDate, Max([Month Start Date]) AS MaxStartDate, IIf([Month Start Date] Between [ThreeMonthStartDate] And [MaxStartDate],Avg([All Call Rate]),' ') AS ThreeMonthAverageCallRate, LIST_WITH_TNC.Device, LIST_WITH_TNC.Model, LIST_WITH_TNC.[Item Num] FROM LIST_WITH_TNC;
I wan't to calculate the price totals but for each instance of Uvoz ID separately. I've sucessfully used Dsum function but I managed only to calculate all price totals for all instances of Uvoz ID. Is it possible to do it for each number of Uvoz ID separately? How do I do it?
So I currently have a table that tracks medication activity for patients called tblMedRanges. The Fields are the ID, StartMedication, EndMedication, Med ID/Medication Name.
In the End of Medication, some patients are not currently active so they have a set date/time field property. What I have for right now is the default value is set to
Code: =date()
So that when staff adds a new medication it is set to the current date. These patients are supposed to be active, but it doesn't update the default value. I want it to continue to update to the current date every time the database is open.
I have three options that I know of(or think I know of) to update but can't commit to one in particular :
1)I want these individual records in the field to update the current time for today and was considering using some kind of data macro code using before update.
2)The other idea I had was splitting up the field into an EndOfMedication field that would display a value only if their inactive, and an Active field (text, value list active/inactive choices) that would be used in a query to generate the current date as med field. This would take some crafty query work with comparisons later on to generate list of drugs that they were on for each visit.
3) set to text field and convert the field to date field for comparison in queries.
I am new to Microsoft Access. I have built two entry forms for product release information. I have a drop box under the label customer for each specific customer. I would like for this form to send the data entered in the form to the customer specific table from the customer names in the drop box. I have tried to research and execute this myself thus have been very unsuccessful.
The interface being used is a main form with various tabs and a subform on each of these tabs.
There is one field ('max power density') in my database that is calculated using 'Max Rated Power' and 'Cylinder Capacity' however these are in different tables and subforms. The 'max power density' and 'max rated power' are in table and subform 1 but 'cylinder capacity' is in table and subform 2. Is it possible to keep them in separate tables/subforms and still calculate the field?
I want to extract the date to append to a date field in a "Calls" table and the comment into a text field in the "Calls" table. Is there a way I can do this via query or code?
- Assets - Shifts - Machine Offline Date - Machine Offline Time - Machine Online Date - Machine Online Time
In the Asset Table I have recorded on each asset the number of shifts it operates for as well as starting / finishing time of those shift. e.g. 2 shift asset will start at 7:00AM finish at 11:00PM or 3 shifts asset will start at 7:00AM finish at 6:59AM
Now I have 82 assets in the factory and 20% of those machines run 3 shifts. Each shift is 8 hrs.
What I have already done is allocate shifts per asset e.g.
when I pick Asset (a) in the Asset combo box, in the shift box it will automatically generate 2 or 3 dependant on what I have set.
If an asset runs for 2 shifts, it would mean that, that asset is operational/running from 0700 - 2300 or 7:00am - 11:PM
also if an asset runs for 3 shifts it would mean that, that asset is operational/running from 0700 - 0700 or 7:00AM - 7:00AM
These are the scenarios that is entered through a "Form"
Scenario A: Machine (a) breaks down at 1700/5:00PM on the 10/7/15 and was back online at 12:30 on 11/7/15, This machine runs for 3 shifts which would mean in the "Breakdown Downtime" the result should be 19.5 hrs
Scenario B: Machine (b) breaks down at 1900/7:00PM on the 10/7/15 and was back online at 10:00AM on 12/7/15, this machine runs for 2 shifts which would mean in the "Breakdown Downtime" the result would be 23 hrs.
I would like to make this an automatic calculation, Is this possible?
Please note I am not after a "Query", I need this calculation in the main Database table named "Tbl_MaintenanceDATA".
I understand this is not the norm and many have suggested against this, however for the purpose of what I need, it needs to be in the main table with all the other data.
ID - File Type - Source - Delivery - Return 1 - X - LB - ROY - LB via Roy 2 - Y - USA - Smith - USA via Smith 3 - Z - LB - -
my question is how can i make the last column (Return) to fill like the data above..what i mean if (Delivery) not null So the return will be filled like the above if the (Delivery) is null the return will be null too
-the user will fill only the columns (File Type - Source - Delivery) -the column (Return) will be filled automatically if (Delivery) not null
I am creating a task tracker where the user will enter a task which is working. If he is complete the task at that moment he will submit the task and everything is done for that task. However, if there is some issue or if the user need any information, then the user will enter a comment and will hit hold. My queryis once the user hits hold button, the table "Main" will capture the hold date and time. I need a second table, may be by name "Inbox" which will only show records kept on hold.
Secondly there should be hyperlink for "ID" of Hold records in table "Inbox" and when the user click on the the "ID" to resume the task, it should take the user to "Main" form and display that particular record (record which the user had clicked). Also, the date and time should be recorded when the user click on the hyperlink in Resume_Date and Resume_Time fields for that record.
Is there any way other than through coding/controls I can lock specific records in a table.
I have a reference table with less than 200 records on it. 5 and only 5 records need to be locked so that they primarily can not be deleted but also so they can't be edited.
I've read about locking it at form level but that, to me, means some sort of coding.
Hope someone can help me out on this one. Searched the forum but can’t find anything to help me out.
I have two tables: tblCustomers that contains unique customer records (names addresses etc.) and tblComments that contains comment data for the customers
Tables are joined one to many tblCustomers -> tblComments on account_ref
tblComments can contain several records per customer, all are datestamped.
I want just the latest datestamped comment record per customer, just can’t seem to work the logic on this one. Must be so simple but can’t fathom it.:confused:
Ideally, I’m producing a report of Customer data (Name, address, contacts etc) + the last comment record for each customer. Have started with a simple query, but have hit an impasse. Have tried sorting, group by, top 1, distinct etc, but don’t seem to be getting anywhere.:mad:
If someone can point me in the right direction, and give me a starter for 10 I’d be much appreciated.
I Have a table that contains the fields: CAT, CHAPTER, ID, someSrting and Completed
CAT, CHAPTER, ID are numbers and Completed is true/false. If I mark a certain entry as Complted (true), I want all the records with the same (CAT, CHAPTER, ID) as the one I marked to be updated to Completed.
For example, If I marked the entry cat:1 chapter:1 id:1 as completed (true), I want all the entrys that have cat:1 chapter:1 id:1 to be marked as completed (true)
the code I wrote is:
Code: Private Pub Completed_check_AfterUpdate() Dim myCC Dim myCat Dim myChap Dim myID myCC = Me.Completed_check myCat = Me.CAT myChap = Me.CHAPTER myID = Me.ID CurrentDb.Execute "Update [my Table] " _ & "SET Completed = (" & myCC & ") " _ & "WHERE CAT = (" & myCat & ") And CHAPTER = (" & myChap & ") And ID = (" & myID & ") ;" End Sub
I'm running the code (my clicking the "check box") and nothing happens, I was thinking that maybe I defined the after "WHERE" statement wrong, and there are 0 entrys changed..
UPDATE: after removing the
Code:
"& "WHERE..."
row, the code does update the entire table, so I have a problem with the syntax of the sql..
I'm building a forum from the scrath. It is already working, but I want to have in each topic the number of replies it has. there are 2 tables, one for the topics and other to the replies. in the replies table there is a field called id_post that has the id of the post witch it belongs.
I solve the problem by inserting a query inside the loop of the posts:
<% While Not rs.EOF %> <% Set rs2 = Server.CreateObject("ADODB.Recordset") sql = "SELECT COUNT(*) as cont FROM replies where id_post= " & rs("id") & " " rs2.Open sql,Conn,1,2 %>
post: <%=rs("post")%> replies:<%=rs2("cont")%>
<% rs.MoveNext wend rs.close%>
but someone told that this would make the page slower, so I want to know if I can do the same thing without having the query inside the loop.
I don't know if I made myself clear, sorry for that.
I need to devide the number of Yes responses for Name1 by the total number of responses. I tried doing it like this =(([Name1]=Yes)/sum([Name1])), but that isn't working.
I have a query that records a status update, and the date it was made by an employee etc. The table has a secondary key related to ... lets say a project table.
E.g. Status Id; EmployeeID;ProjectsID;Status;Date
I want to calculate the average amount of days it takes for a status change occur.
I'm having an issue with pound signs in my table for specific items. I've create a DB that when you click a command button it opens a form and in the form it has a notes field. In the notes field once where i had data is now pound signs.
The DB is setup so when you click another command button to close out, it saves the record. It works 98% of the time but the i'm concern about the other 2% of the time.
I would like the "DateOfConfirmation" to populate with today's date when "SSurvDiagThisYear" is Confirmed.
The DateRecordCreated is a simple =Date() that populates when the record is entered into the table.
SSurvDiagThis Year is the case outcome - Pending, Probable, or Confirmed. It is possible that the case could be confirmed on the same day it was entered into the table but that is RARE.
I am hoping for the The DateOfConfirmation to capture the date the case is confirmed so that I can gather some duration between the case being opened to confirmed.
I am using calculated field as a data type in access 2010.
They are working fine.
However, I added a new field and now the final calc won't work.
I have Subtotal adding loads of fields together. Works fine.
Then I have a VATunit field which is a double integer, so enter 20 and my next field is VATTotal calculates the SubTotal + the VATunit by doing (Subtotal/100)*VATunit. This calculation is fine and gives me the correct amount.
The next field is a Total field. Which adds Subtotal and the VATTotal together. Howver, the Total is the same as Subtotal. It is not adding the VATTotal to it?
