Calculate Fields Between Dates
Aug 10, 2015
I have a database that I need to calculate a query that is based on 3 dates. For example...I have an admission date and a discharge date in my database.
If there is no date in the discharge date then I need it to calculate the number of days between the admission date and "today's date." If there is a discharge date then I need to calculate the difference between admission date and discharge date.
Basically i need a length of stay figure. I can figure the formula in excel but cannot get it to work in access. Here is my formula in excel
=If(ISBLANK(DischargeDate),Sum(today()),sum(Discha rgeDate-AdmissionDate)
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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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Jun 27, 2013
In my table I have the following 4 fields with the associated date field:
Bronze: 11/1/2013
Silver: 5/1/2014
Gold: 11/1/2014
Platinum: 5/1/2015
I am trying to calculate a value based on comparing the current date to the dates in these fields. I am using the below formula. However, using 6/27/2013 as the current date, my formula keeps resulting in "Bronze" when it should result in "Standard" Am I doing something wrong?
=IIf(Date()<[Bronze],"Standard",IIf((Date()>=[Bronze]) And (Date()<[Silver]),"Bronze",IIf(Date()>=[Silver] And Date()<[Gold],"Silver",IIf(Date()>=[Gold] And Date()<[Platinum],"Gold","Platinum"))))
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Aug 28, 2013
I have built a query to calculate the expiry dates of training courses but I am trying to input a criteria so that only dates within 90 days of todays date show. I am using Date()<90 but it doesn't return the correct information. What the criteria should be for this?
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Feb 2, 2006
Help Help Help - I have a database which I need to calculate a date 3 years from now, then report on it 6 months before the 3 years expires...
Hope that makes sense
Fay1136:confused:
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Mar 25, 2008
:confused: DateDiff gives me the number of days between 2 dates but how do I count only WORKING days between 2 dates?
I hope someone can help?
Cheers
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Jul 17, 2014
I would like to create an Access Database that calculate due date based on 2 tables, one with invoices and supplier details. The other one with Supplier name et payment terms.
Input:
Table with the following details:
- Supplier Name
- Invoice Date
- Currency
- Amount
Output:
Table same as input but with a column that shows for each record the Due Date. The due date would be calculated by adding payment terms in days from another table to the Invoice date.
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Oct 6, 2005
I am woking on a project full of nightmares. My latest, and the one I am currently unable to solve, involves trying to calculate the number of days between Billing Dates.
I have a table named "Date" - I didn't design this!
It contains a field named "Date"
If I query for just that Field I get the following:
Date
9/8/2005
8/8/2005
7/8/2005
6/8/2005
5/9/2005
...
I need to figure out a way to determine the number of days between the bills so I can calculate the average cost per day.
It seems like it should be an easy thing using like the datediff function or something, but since they are in separate records (rows), I can't figure it out. I have tried and tried and tried.
Any suggestions would be VERY much appreciated.
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Dec 9, 2007
I have a database with 10-12 fields containing dates certain things were completed. There is also a field for the 3 different locations we have and a program year 2006, 2007, or 2008. What they would like to do is click a button and get a list to choose the first date they which to compare, then a list to choose the second date, calculate the number of days between the two dates, select the program year from a list, and a location from a list. Can anyone help me with how to do this if it's possible?
The fields look something like this:
Prog Year Location DateA Date B DateC DateE
2006 G date date date date
2006 G date date date date
2006 P date date date date
2008 D date date date date
2007 P date date date date
For Example, I might want 2006 Program Year, Location P, calculating days between DateA and DateB, except that the next time I might want to choose a different set of criteria.
Any ideas?
THANK YOU!
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Aug 17, 2015
I'm trying to create a sub to count how many days between 2 dates excluding Holiday and weekend. Using the DateDiff() function is not allowing me to exclude certain days.
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Oct 6, 2013
The below function returns correct time difference between workdays. However, it is excluding Saturday as per the code.
It is calculating 06:30 am to 22:00 pm time for weekdays but I also want it to calculate the time from 10:00 to 13:30 on a Saturday.
I am trying to use the NetworkMinutes function to achieve this. However, there is a problem getting the time for Saturday.
Code:
Option Compare Database
Option Explicit
'---------------------------------------------------------------------------------------
' Procedure : NetWorkMinutes
' Author : Rod
' Date : 13/12/2012
' Purpose : Returns the number of work minutes between two date-time arguments.
[code]...
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Oct 26, 2006
I have searched the forum for this answer but no luck. :(
I'm trying to calculate the amount of WORKING time between two dates in an Access database. At the moment i am just subtracting one date from another but this gives me all of the time in between including weekends and evenings.
I need this time to be calculated in hours.
In Excel i know there is a NETWORKINGDAYS function which does something similar but with days rather than hours.
At least if i could get the working days i could then convert it into hours.
Please help!
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Jun 14, 2007
Hello,
Was wondering if it is possible to create a query or another method that would calculate future dates based on inputted info ?
For example a person inputs on a form a date completed (06/14/07) and then also selects a frequency of when this has to be revisited....monthly, quarterly, semi-annually.
So based on the date completed that the person inputs I'm trying to get the date if they select monthly of 7/14/07 (using above date example).
Any help would be greatly appreciated.
Thank you
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Jun 25, 2013
My database includes two separate dates related to a vehicle purchase and default payments resulting in repossession. I need to find out how many weeks passed between those dates.
Example:
03/14/12 Date of automobile purchase
06/06/13 Date of last payment before default
How many weeks in between? And then I need to average all of those figures so my company can see the usual week-term time frame that our customers are defaulting and getting repossessed.
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Feb 11, 2015
What I have is two fields, one is a simple date and the other is slightly more complex as it holds a date but in a different structure (a dated case number).
The case numbers are for example, 150211551223 the date being the first 6 numbers and equaling to 11/02/2015. so the code will need to grab this data, spin it around and convert it.
The formula will then be:
simpledate - convertedcasenumberdate = days between.
(simpledate will always be the latest date of the two).
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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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Nov 11, 2012
We are collecting data from client files that have multiple dates (start_date, event1_date, event2_date, end_date.) For client protection purposes, we are absolutely not allowed to leave the facility with the actual dates. However, we want to know how many days have passed between each event. I thought about having the data collectors enter each date, have a calculated field store the time between dates, and then have the actual dates cleared when the record is saved or when the person moves to the next record.
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Jul 18, 2013
I have a form with date fields I need to calculate review dates for employees. Example 45 day 60 day 90 day what would be the best option to do this?
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Jun 14, 2005
Hello,
I am trying to create a listbox that shows "calculated" dates for a two week payroll. I have a field in a table that is set to a start date (05.31.05) and another field that specifies the number of days between dates (14). I would like set a listboxes recordsource to show the start date and then calculate the next 4 dates using the first date (05.31.05) and the range (14) without actually storing any dates in the table. I can figure out how to do it if the values are stored, but I just want to know if this is possible to get the results another way.This may sound crazy and unecessary, but I want to know if this is possible without storing values in the table.
Listbox values:
05.31.05 - (first date from table)
06.14.05 - (first date + 14)
06.28.05 - (first date + 2*14)
07.12.05 - (first date + 3*14)
07.18.05 - (first date + 4*14)
Is this possible? HTMS. Thanks.
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Apr 20, 2015
I am making a basic hospital management system in Access 2013.I have two tables named "Bed" and "Receipt". Bed(BedID,AssignedDate,PatientID,DischargeDate,Bed Charges) Reciept(ReceiptID,PatientID,BedCharges) I want to calculate "BedCharges" by calculating the number of days using "AssignedDate" and "DischargeDate" and then multiplying with a constant amount of charges per day. Also the BedCharges calculated in "Bed" Table also needs to be in the "Receipt" table. How can I count the number of days and then calculate the "BedCharges" in both the tables?
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Jul 1, 2015
I am trying to create an attendance database, our company introducing the point system attendance,
Called Off (CO) 2 points
Left Early (LE) 1 Point
Tardy (Tar) 1 point
Employee can reduce point if they have perfect attendance for 90 days from the last day of violation. For example, an employee absent on 01/01/2015, he will received 2 points, the credit will giving on 04/01/2015, if there is no violation, but if he absent again on 03/31/2015 not only he will received 2 more points his 90 days will start from 03/31/2015, now he will eligible to get credit on 06/29/2015 and so on.So far I have created 3 tables and 1 query.
Tables
Employees: Id, Last Name, First Name
Points: Id, Description Points
Attendance:Id, Date, Employee ID, Points ID
Query
Date
Employee ID
Last Name
First Name
Point Description
Points
how and which formula to use which calculate the points based on above example.
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Jan 16, 2015
I've been trying to solve this problem for the past month and at the verge of destroying my PC! I've trawled through numerous web sites but just cant seem to figure this one out.I'm trying to get access to tell me what the next service moth is based on the start date, end date, and the frequency of service.
For example:
Start date: 01/01/2014
End date: 31/12/2015
service frequency: Every 4 months
Using the above information the service months are:
1 - April 2014
2 - August 2014
3 - December 2014
4 - April 2015
5 - August 2015
6 - December 2015
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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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Nov 21, 2014
I'm trying to calculate the number of days between two dates using the iif statement
Fields:
[LDW] "Last Day Worked"
[ReturnedDate]
DESCRIPTION: If ReturnedDate is null, then calculate the datediff "d" between LDW with Now(), if not, then calculate the datediff "d" between LDW with ReturnDate.
I tried this but it didn't work at all.
Days Absent: Iif(isnull([ReturnedDate],(DateDiff("d",[LDW],Now())),(DateDiff("d",[LDW],[ReturnedDate])))
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Jun 15, 2015
I'm trying to build a query with an iif statement to calculate expiration dates within a query. For some reason what i'm trying to do is not working as expected.
Here's the situation. Every employees with an exception of two employees in the company has an expiration 2 years after the class took place. The two exceptions are the certified instructors who's training certification is good for three years.
I've created a query with the employeeid, training subject, and maxoftraining date.
I'm trying to write an if statement to give me the expiration date based on the above information. Here's what I have so far; however its not calculating based on the criteria.
Expiration: IIf([tblemployee]![EmpID]=1 Or 2,DateAdd("yyyy",3,[maxoftrainingdate]),DateAdd("yyyy",2,[maxoftrainingdate]))
At this point in time, all "expiration" dates are showing + 3 years rather than just the Employee ID's 1 and 2 and the rest +2 years.
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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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