Minimum Difference Btwn. Dates
Nov 2, 2006
Hi.
I have one table with dates (1) and object properties. Another table has dates (2) and other info. What I need is a query that selects the dates (1) closest to date (2) and lists the respective properties.
I figured all I needed to do is a WHERE MIN (dates(2)-dates(1)) query. The problem is that Access (2000) rejects this query b/c aggregate functions are not allowed in WHERE statements.
Does anyone have an idea of how to work around this? The structure of the data is such that there will only be one minimum date > 0.
Looking forward to your ideas. THANKS !!
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May 1, 2006
The database I'm working on is used for personnel budget projections. Because some employees are hired mid-year, I need to be able to use various dates in my projection calculations.
I have 3 different tables - one with the employee start date, the other with the fiscal year start date, and the last with the start date of certain special pay tables. In order for my projections to work correctly, I'll need to return in a query the minimum of these 3 dates. I know how to do a minimum value in a single field within a table, but don't know how to select a minimum from multiple values in multiple tables. Is this possible.:rolleyes:
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Jan 18, 2006
I have a Transactoin Table that holds the following fields:
TransID (*Primary Key Numerical Value)
OrderID (Non Unique Number Value, One Order can have multiple Transactions attributed to it.
Status (Numerical Value ranging from 0 to 32, each is a different phase in the life of a transaction such as 0 means Transation Created, 1 through 31 are various actions with 32 beign the transaction closing)
Date (The date in which a particular phase of a particular transaction happened.)
Reason (The Description of a phase. This is the only text field whose contents are relative to the Status field in the same table.)
I need to find the amount of time passed from the first Transaction to the last transaction of each individual order, which will be displayed in a report. Unfortunately not every order goes through all 32 phases, in fact most dont. The individual orders have a random amount of phases that they go through but each have a starting one (which ranges from 0 onwards) and an ending one (once again it is not necessarily 32). The dates correspond to the numbers in an individual order which means that if an order has the following phases:
1
2
4
6
Then the dates of each phase will be one after the other like the Status Number as shown above. Anybody knows how to do this? I need to find how much time passed from the first transaction to the last for each individual order qand display it in a report.
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Jun 27, 2005
In access in one field I have one date and in another field I have another date. I want to calculate the number of years.,months and days elapsed between these two date. e.g. suppose in one field I have 30.06.2005 and in other 20.04.2004 then it should show 1 year 2 months and 10 days.
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Jan 6, 2007
I have a table, and in the table I have an assesment date and date of receipt. I would like to have a field in this table which shows the difference between these 2 dates (in days). If this is possible?
Can anyone help me on this matter, I am pulling my hair out. Its most probably very simple for you mega experts.
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Nov 18, 2011
I currently have a table that has patient ID (unique record (SSN)) and a date of visit field. The SSN may have numerous rows with different dates of visits. What I am trying to do is a DateDiff function that will retrieve records that are 48 hours apart or 2 days apart. We are tracking patients that return within 48 hours of a previous visit.
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Aug 31, 2006
Hello to everybody.
I have a problem in calculating the difference between two dates and displaying the output into Years Months Weeks Days. My problem is that dividing the number of days by 30 and requesting an integer is not accurate enough. I have looked at Pat and Jons examples shown in these threads
http://www.access-programmers.co.uk/forums/showthread.php?t=67472
http://www.access-programmers.co.uk/forums/showthread.php?t=89051&highlight=calculating+number+months
which either method would suit me as the accurate answer is what I am after.
My problem is that not all of my records would have a start and end date. Therefore both examples would result in an error.
Can anyone please give a hint on how to perform the calculations on those fields which have dates recording the results but ignoring those fileds which do not have a start / end date.
I am having a bad day and I'm sure the answer is so easy that I am going to kick myself but having played around with the modules by limited knowledge is not enough.
Many thanks in advance
Ian
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Sep 14, 2014
I have the attached database which calculate the Difference between dates.I have also two problems like i shown in the image
Code:
Option Compare Database
Option Explicit
Sub Recalculate()
Dim rst As DAO.Recordset
Dim dff As Long
[code]...
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Oct 25, 2013
I have a list of client activity - client name, loan ID and loan date. I would like to create a new field that shows the number of days between one loan and the next. If I was doing it in excel, I would need to sort the data by client name and loan date and then calculate the number of days between the loan date of one loan and the loan date of the loan immediately prior to this.
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Sep 20, 2014
Basically, I am trying to calculate a integer number difference from two dates (TAT = Due-Date - Result_Date). The number is calculated and excludes weekends and ideally holidays (for that I have a tblHoliday but not sure how to use it). The function below seems to calculate a number but doesn't exclude weekends.
For example, if Due_Date is 9/26/2014 and Result_Date is 9/30/2014, then TAT is calculated to be 5 (should be 2).Since 9/26/2014 is a Friday only Friday and Monday are used in the calculation.
Code:
Option Compare Database
Public Function WorkingDays(StartDate As Date, EndDate As Date) As Long
Dim intCount As Long
intCount = 0
[code]...
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Jun 8, 2015
How can I calculate the difference between two dates but I only want to count the work days? So if was today and I wanted to go until 6/15/2015 the difference would be 5 and not 7 because I do not want to count Saturday or Sunday. Is there a special %datediff function where I would only count work days?
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Jan 24, 2008
Hi, I am a longtime Excel user, and am now migrating some work to Access.
I have 2 fields dealing with dates in the format mm/dd/yyyy hh:mm, OPEN and CLOSE
I'd like to get the difference between the two in hours, but I have no idea how or where to do this in Access. I'm assuming it is put into the queries, but it would be easier if I could just put it in the table.
Here is an example
1/1/2008 1:00 1/2/2008 2:00
I want the result to be "25"
Thanks in advance!
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Apr 22, 2013
I am trying to calculate the difference in dates between two fields. How do I find the difference in days between field one which contains the date 04/12/2011 and field two which contains the date 04/12/2013? I have tried to use the datediff function, but it keeps telling me it doesn't recognize the field name, even though the spellings correct.
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Jul 3, 2015
I am using Access 2013.I am trying to create a query that will count the days difference between two dates. The dates are in the same field. I want to group by Region.So:
tblRegion = RegionID
tblStatus = StatusDate
I know how to use the DateDiff when it is two different fields, but I can't figure out how to do it from the same field.
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May 6, 2014
I am wanting to get an expression that will return the difference in years and months between 2 dates. Specifically, I want to know peoples ages in years and months based on a person's D.O.B and todays date. I have managed to do it in years:
Expr1: DateDiff("yyyy",[TBL_EmployeeDetails]![D_O_B],Date())
and in months but I would like to know how to return the difference in years and months.
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Jan 28, 2005
Hello,
I have a table which has repeated IDs, I want to find the start of the ID then mark it as Y in the next field, the remaining repeated IDs should have blanks in the next field, how do I do this, thanks for any help
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Aug 9, 2007
hi
i try to build an access form .
i have "big" table that fill in the name of the product , the quantity , and a minimum quantity.
the field : min quantity give us the quantity that is the minimum of the product.
i have a "minimum" table that has the list of the product and the minimum quantity.
i want to see the minimum quantity of a product , when i type the product (in the form if it possiable , if not - in a report)
eran
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Jul 8, 2005
I have a counter on my form which will increase or decrease depending on weather a number of tick boxes report true or false. Is it possible to set a minimum aloud value on a box regardless of other criteria. At present I can depending on certail criteria, finish up with a - number which for other reasons, I dont want.
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Mar 6, 2006
Hi All,
I have a main form and 5 tabs within that mainform that are subforms. They are linked by an EventID.
The subforms are continuous forms, but only one record is "required". What kind of code do I need to make sure that the data entry person enters at least one record in each subform.
Also, is there a way that when I am tabbing through my subform and get to the second record and leave it blank, that when I press tab it will take me to the first record of the next tab subform.
I appreciate your responses.
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Dec 18, 2006
I have a field in a report that is calculated to generate a dollar amount. Well the people who need this have some strange rules about how they get their dollar amounts. Mostly they just round up to the nearest dollar, which is no problem. But they also want a minimum charge of $2.00. So my problem is if the calculation works out to be 0.01 to 1.00, it will say 1.00 and it is going to be wrong because they will want it to be 2.00. So is there a way to set a minimum value for this field, or where should I go to try this?
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Aug 18, 2005
Hi
I have a table (tbl1) with three fields/columns (Primary key, NameID, Number). E.g.:
NameID ... Number
Mike ........ 2
Mike ........ 3
Mike ........ 19
Ronald ...... 1
Ronald ...... 2
Greg ........ 7
...
I would like to make a query that lists each NameID only ONCE, with corresponding MINIMUN Number. So the result from the upper example would be:
NameID ... Number
Mike ......... 2
Ronald ....... 1
Greg ........ 7
How do I do it???
Thank you in advance
m.
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Oct 26, 2005
I wondered if anyone new how to return the following
Table of Data
ID|ID2|Date
----------------
1 | 1 | 20/01/05
2 | 1 | 21/01/05
3 | 1 | 19/01/05
4 | 2 | 20/01/05
5 | 2 | 25/01/05
I want to return the minimum date grouped by ID2, but with the corresponding ID i.e.
ID|ID2|Date
----------------
3 | 1 | 19/01/05
4 | 2 | 20/01/05
cheers for your help...
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Sep 7, 2007
How do I create a query to return just one record, a minimum value for one of the fields, per group within a group that contains an ID field?
This is what my query is returning:
ID, UPC, MinOfAverage Unit Cost
19161, 026851003663, $1.15
15927, 026851003663, $1.11
4459, 026851003663, $1.18
19598, 029695215513, $39.73
15993, 029695215513, $39.29
11694, 029695215513, $48.81
This is what I need:
ID, UPC, MinOfAverage Unit Cost
15927, 026851003663, $1.11
15993, 029695215513, $39.29
I would be *extremely* grateful for an answer. I am new to this list, but I have plenty it MS Access help karma to my name, so I'm hoping to cash some of that that in.
Fingers crossed.
-Tom
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May 17, 2013
I have a query that is working, but I am looking to make it faster. We import 13 csv files daily into 13 Access tables. The files have an ItemID and price. We need to get the minimum of the raw data across the 13 tables & then manipulate the prices some (in the query) and get the lowest of the manipulated prices again for the 13 tables for each ItemID - some might be blank. We are using a MinOfList function in the query to get the minimum of the 13 numbers. But this is very time consuming since we have to run the Min function twice (with 13 input parameters) for each ItemID - about 15,000 records. It takes about 1 minute to run the query.
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Oct 29, 2012
What I am doing is trying to have access identify and label various lanes of transit.
So, for example. I have the below...
Origin Destination Via Transit Time
Hong Kong New York East Coast 38
Hong Kong New York West Coast 32
China New York East Coast 34
China New York West Coast 29
Is there a way in Access to have it identify that Hong Kong to NY via West Coast is the "DEFAULT" where HKG to NY via East Coast would be "ALTERNATE" ?? And then do the same for the next origin? The table I have now has over 71 different origins but I need it look at each origin independently.
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Jun 1, 2007
Does anyone have a good technique for enforcing a minimum number of records in a table?
I am attempting to ensure that in a table of Roles, there be a minimum of two Roles defined as Technicians. The field which identifies a Role as Technician is a Boolean.
I wrote a Function which does a domain lookup to count the number of Roles defined as Technician and am calling it from the BeforeUpdate event.
However, if there are 2 Technician Roles, and I mark a third Role as Technician, change my mind and try to unmark it...of course the Function can still see just the 2 existing.
I realize I can Undo the edit, but a user may not.
Thanks for any help.
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