Returning Maximum Value For Max Date
Dec 14, 2005
I need to create a query that will return for the latest document, the greatest document number. If I do select max(doc_date), max(doc_nbr), I end up getting the max doc_nbr, but it has an earlier doc date. How would I structure the query to do this?
An example is for these values:
1/30 1
1/30 3
1/30 5
2/28 2
2/28 4
The result should be:
2/28 4
I will then need to see if this returned value is different than the value that was returned the day before, but I am pretty sure I know how to do that.
Thanks,
David
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Sep 27, 2006
Can someone help me out on this:
I have a table 'articles'
ID --- date --- authorID
1 --- 20060901 --- 1
2 --- 20060902 --- 1
3 --- 20060903 --- 3
4 --- 20060904 --- 3
5 --- 20060905 --- 2
I need a query that will produce the records that have maximum date for each author (distinct authors), ordered by date descending.
For example, output should be in this case:
5 --- 20060905 --- 2
4 --- 20060904 --- 3
2 --- 20060902 --- 1
Hope that you understand what I mean...
Please help!
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Feb 24, 2008
hi all,
I've got one question regarding dates.
I've already make the form to show the count of records by using query according to the start and end date selected by the user.
What I want is when I open the form, it should show the results of count between the minimum and maximum dates inside the data table. It means I want to show the count result without date specification that is the total count from all records of the whole table .
Can anyone help me how can I make it?
thanks a lot in advance.
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Jan 11, 2013
I would like to know if it is possible to pull the max and min start date and end date. Basically i have an option where by the user selects the desired date range that they would like.
Now I would like to know how to get the earliest and latest date range should they not select a date range. My date range is being displayed at the top of my report.
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Apr 21, 2007
Hi All,
I have been working on this problem for hours, but I keep hitting a brick wall!
Basically, whatever date is entered in [field1], I want [field2] to return a date of the 15th of the following month. For example:-
01-02-2007 = 15-03-2007
31-08-2007 = 15-09-2007
23-12-2007 = 15-01-2008
Thanks in advance,
Paul.
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Feb 13, 2006
I was wondering if there was a function in access which allows the user to type in a date, and instead of showing just the date, it shows the actual day of the week as well, in a seperate field. Is this possible?
Thanks
Adrian
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May 26, 2005
I am tring to add a number of years to a dob. I'm doing this by adding my
date+years*365.26 I get a string of numbers. I then convert the number in
the next column to actual date again. I'm getting the correct date. I've tried unsuccesfully to use the dateadd function.Now I want my criteria on that column to allow me to return only date in a given to from period of my choosing. I want to determine the date range each time I run the query.
An example would be:
DOB age date I need to follow up
5/15/1935 + 75 = 5/15/2005
Then I request dates between 4/1/05 and 5/30/05 and this date is returned.
I've tried the between_and functions but nothing is returned. I'm guessing it's because the column is still a calculation and not a true date.
I've tried: Adding a column to my query to convert the number string back to
date format (criteria failed to return a result). Adding a second column
that ='s my converted number to date column (criteria failed to return a
result)
And I've tried the make table query and then run another query from the new table. I can't seemto make this happen. I think it's not recognizing my data as a date because it isn't returning any data.
Is ther an easier way to: Add a number of years to a date and have it return
a date and not the number string?
If not is there a better way to convert the string to a date?
Is there a way to get my criteria to recognize the date and return date
between my begin and end dates?
Thanks
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Oct 6, 2014
I have a query which pulls up results based on the value of a text box. All works well except one field has a DOB (date) and if I search say for " /1976" I get no results, however search /76 and all the people with that year of birth show then show up. The date is stored in the dd/mm/yyyy format.
I'm using the like [forms]![clients]![searchfield] in the criteria of the query to bring up results.
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May 19, 2014
I have two class variables (both arrays) among about 10 other class variables, that are not returning any values but "" for the string or #12:00:00AM" for a date. Here are my class variables:
Code:
'UPSData Class Module
Private p_LetterArray() As String
Private p_date() As Date
Private p_LetterArraySize As Integer
My Properties
Code:
'Properties
Public Property Get LetterArray(index As Integer) As String
LetterArray(index) = p_LetterArray(index)
End Property
Public Property Let LetterArray(index As Integer, NewValue As String)
[Code] ....
As I said, tLet and tDate result in "" and #12:00:00AM# respectively. When I step through the code, the values for tmp.LetterArray(0) is assigned "src" and tmp.UPSDate(0) stores "12/25/2013" correctly.
When I assign tLet and TDate, the same thing happens when stepping through the code. I'll use the LetterArray property to describe what happens:
Get LetterArray is called. p_LetterArray(0) does equal "src"
Let LetterArray is called. NewValue is "src" and p_LetterArray is "src" when End Property is highlighted in the debugger
Scope returns to Get LetterArray with End Property highlighted. In checking the values, LetterArray(0) = ""
Same steps happen with the same results ("12:00:00AM" vice "")
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Dec 11, 2013
I want to be able to display the result of a difference between Date/Time values in "HH.MM" format (i.e. yes I want the result in decimals and I don't want Access to round up or down just because it feels like doing it!). I have used the following:
Example 1:
Dim ActualManHours as Long
ActualManHours = (txtEndTime.Value - txtStartTime.Value) * 86400
txtActualManHours.Value = ActualManHours
Example 2:
Dim ActualManHours as Long
ActualManHours = DateDiff("h",txtStartTime.Value, txtEndTime.Value) & "." & Format(DateDiff("n",txtStartTime.value,txtEndTime. value) Mod 60, "00")
Example 3:
Dim StartTime as Double
Dim EndTime as Double
Dim ActualManHours as Long
StartTime = CDbl(txtStartTime.Value)
EndTime = CDbl(txtEndTime.Value)
ActualManHours = EndTime - StartTime
txtActualManHours.Value = ActualManHours
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Feb 20, 2013
I have what I think is a simple query returning the names of students that have been dismissed since September 2012 using a "WithdrawnDate" field. The query pulls a lot of information from other related tables (about 6 different ones), and has two expressions.
When the criteria is set to either "Is Not Null" or a date range (which is all I need), it does not return the complete set of records based on the data that fits the criteria in the main table?
Could there be some sort of join preventing all records from being returned?
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Jun 5, 2005
I have a Table where the are several entries all with Fields A, B and C
the same, and varying values for Field D.
There are several different values of A, B and C.
I want have a query, pick out each combination of A, B and C and just the
Max value of D for that combination.
It looks as if it should be simple but I can't figure out how to do it?
Anybody able to help?
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Jul 10, 2005
Hi to all;
I am not familiar with access function, in Excel its very easy to find the max value at row level, what's the formula in access query to get the max of this example
Co1co2 co3….co60max(co1:co60)
200150300 500 ?
212542321 222 ?
thanks in advance for respond
Majed
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Jul 17, 2007
Hi all
I have an expression in a query which is checking a list box on a form. If the list box is empty (is null), then I would like the query to search on the highest (maximum) value in the specified field (CourseFK), otherwise it will look for the value in the list box.
Expr1: IIf([Forms]![frmEditDeleteStudentDetails]![lstEditCourseFK] Is Null,[CourseFK]=Max([CourseFK]),[CourseFK]=[Forms]![frmEditDeleteStudentDetails]![lstEditCourseFK])
However it seems Access will not allow me to do this - I get an error about an aggregate function in a where clause.
Can someone please suggest to me how to get around this? Eg, is there an alternative way to search for the maximum (still needs to be determined dependant on the list box).
Thanks
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Dec 10, 2007
Hi,
Can some1 tell me how to create a query that shows me the ProcessID for max time and date (date and time are in separate fields) for every PersonID. I need to run a query once in 5 minutes to check the job that every person is doing. They are entering the processID every time they get a new work to do.
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Apr 21, 2008
How do you find the maximum of four fields in each record of a query. Say (for example) you have daily records of the rainfall across four cities, where the cities are the fields in the query. how do you write an extra calculated field to the query that shows the max. rainfall across the fields on a paticular day.
Many thanks if you can help
Nifty
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Jul 12, 2007
I am a beginner and have a very basic query. I would like to create a field which returns the maximum value across a number of fields for each record. Is there a function that would do this?
To explain in more detail, each record is a customer and the fields are their purchases by month. I would like to get the maximum monthly purchase amount for each customer over the past year.
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May 4, 2005
Hi,
we use access for localisation in our application. The business object which accessess the access uses DAO connectivity and we often land to
"Too many client tasks" problem.
is it wise to change the DAO to ADO? if so the above problem will go off?
what are the chances that the problem still persists?
is that access has any limits on the number of connections? like 64, 255? or is that ADO/DAO has any limitaions on the number of concurrent connections to access DB?
Pls help, your help will be highly appreciated.
Thanks,
Venkat.
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Sep 26, 2005
How many users can an access database support? I'm setting up an app accross 3 workstations but each has multiple users. There may be as many as 1000 records a day entered. Can an access database handle this or do I need to switch to sql server?
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May 3, 2006
hi all,
This is general question only. How many number of records that Access can handle as a maximum records?
Or it only depend on size limit (4GB)???
thanks
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Oct 3, 2006
We have a database in Access 97 which is 0.8GB.
Can anyone tell me:
a) The maximum storage capacity.
b) What will happen when it reaches that size!
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Aug 17, 2007
I understand that the maximum file size for an Access db is 2GB but can you essentially have as many fields as you like as long as you do not exceed the 2GB threshold?
I am doing some planning for creating a database with ~90 fields and want to know before I start it whether it will be able to handle that many.
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Jun 3, 2005
My issue:
Does anyone know the maximum number of (one to one) relationships with cascading deletes a table can have?
Background:
I have a split database peer-to-peer application with ten simultaneous users, 250+ linked tables running on A2K, AXP and A03. MSDE and SQL Server are presently not viable options.
I'm unable to manually or programmatically relate one table to 73 others with referential cascade deletes; some of the 73 are related to still other tables. The one table is used as a recordsource on a subform on each of 73 different main forms, each of the latter having a different recordsource.
In other words, I want to delete a record in any of 73 different main forms, each with a unique table recordsource, and then cascade delete a subform record (which has the same table recordsource, regardless of the main form).
If I combined the 73 into a single table, I'd have a monster record with 500+ fields, assuming the latter is even possible, and in which event perfomance would suffer from excessive network traffic.
What I've tried:
I haven't worked this issue for some time and have forgotten the number of relationships for a single table I've been able to create. As I recall, it's on the order of 20 relationships maximum for one table.
Of course, I can do it programmatically delete the subform record on the OnDelete event of the main form, but, for elegance, I'd like to use a cascade delete.
Peer-to-peer network performance is not presently a problem.
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Feb 11, 2008
I would like to know if there is a maximum nb of columns to use in a table or at least a prefered max nb. For example i have a table "customers" and inside i have "name" "last name" "age" "gender"..and so on is there a limit?
By the way i'm using access 2007
Thx for the explanation in advance.
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Sep 20, 2005
My quiery is supposed to search through a table of names, and find the latest timesheet entry date for each name, as follows:
ID: 1
Name: John
Timesheetdate: 1/1/2005
ID is specific to each name.
I want the result to be a single row for each ID/name, and to return ONLY the latest timesheetdate (this could either be the maximum value or the latest entry).
I have a feeling that this is a simple problem, but i just dont have the knowledge to do it, any help would be greatly appreciated!
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Sep 29, 2005
Can someone tell me what the maximum amount of fields that you can have in a query is please?
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