Need Help With Datediff
May 14, 2007
Hi,
I am trying to calculate the number of days between 'today' and a 'date of birth' field. In the field properties Default Value I am using =(DateDiff('y',Date(),[dob]) where Date() gives today's date and [dob] is my 'date of birth' field. However, this is not working. I get an error "(The database engine does not recognize either the field 'dob' in a validation expression, or the default value in the table 'Table1')"
I have set the data type for both fields to 'Date/Time'. What am I doing wrong? Is there any alternate method?
Also, how can I calculate height in feet & inches (5'6" or 5.6 or 5-6) from a given height in meters?
Thanks
Raj
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Jun 16, 2006
Is there a way in a query to write a datediff that looks at all the possibilities month, day, year? I have 10 different fields that I need to do a date diff on. I would like to have the fields checked in one place rather than 10 day checks then 10 month checks and 10 year checks. I don't need to use the data any where but I need it to let me know if there is a difference between a calculated date and a date that was input by a user. If there is then I know the user input the wrong date, and it shows as an error.
Thanks
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Jan 2, 2008
I have heard of this datediff thing on access. How do you make it work? I also want to do a calculate between the date of birth and date of death? Bearing in mind they are all different. I am wanting if possible to list the age at death either as for example 70years and 85 days or 70.233 years
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Dec 2, 2005
I need to caculate the difference in days between to dates. I would like to include only Business days but would settle for any help at this point
Thanks in advance
-WM
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Jul 16, 2007
Hi there.
I'm using the following code in my Access aplication:
DateDiff("h", IncStart, txtrts)
My problem is i need the exactly time difference and if the difference is 2hours and 15 mins it will display only 2 hours. Is there any way to do that? I've tryed in min but it display 135 mins.
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Oct 3, 2007
hello all,
would really appreciate some extra help with this,
many thanks,, the story is as follows,,,,,,,
hello all,
i have a very simple databse with two table in it,, both table share a lot of common information, including a primary key called jobcard number,, i want to know if there is a simple query i can run that will find any differences in the start date fields that are found in both tables
any help would be much appreciated
cheers
wardy
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Look at DateDiff function in the help for the time differences.
Thus for example in a new column in your query you can type:
DifferenceInDays: DateDiff("d",[Table 1 Name].[DateField Name], [Table 2 Name].[DateField Name])
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thank you DrSnuggles,
could you explain in idiot proof instructions?
do i enter the diffdate code in the criteria row of the select query? also, what do i need in the field and table rows? is it the table and filed i'm comparing the data against?
once again
many thanks
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Apr 9, 2008
I have a call tracker database.
What I'm trying to create a query to view all my calls' time average (opened date and resolved date). Basically, how long it took to fix a call or problem... whatever...
I tried with datediff(), but had problems getting the Total Avg.
I would need the query to look like this...
Total Calls | Avg Call Time
100 | 5.33 (min.sec)
Thank you
Lucas
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Sep 20, 2004
I have a form that has a start time end time and total time. I am using date diff to calculate the total time and it is working fine, but i want the output to be placed into Total time field of a table. I am new to access and DB in general. Any help would be appriciated.
Greg
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Aug 30, 2005
I am trying to calculate the total number of days between a date (i.e, csdate) and todays date in a Query for a Report.
I have tried the DateDiff command in the query line and in an unbound box on the report but it is not returning the right values.
Can Someone tell me what I have done wrong. I have checked that the date is in long format and tried it in short format as well with the same results. Below is what I have tried.
csdays:=DateDiff("d", [csdate], Date()) I have tried the Now() command as well, but it is not right either.
Please help!
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Mar 21, 2006
My company recently switch us from Access 2000 to Access 2003. A query that previously worked, no longer works. I've searched the previous posts and Access help and updated the query based on the search results, but still receive the error message. "Undefined function 'Date' in expression."
Here's the query calculation:
AppOut: DateDiff("d",[AppMailed],Date())
Would someone please let me know where I am going wrong?
I've gotten it to work with this calcualtion, but the user has to manually enter today's date each time. But I know there has got to be an easier route.
AppOut: DateDiff("d",[AppMailed],[date])
Thanks =)
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May 12, 2006
I am using Expr1: DateDiff("d";Date();[Expiry Date])
I am having a problem , the date diff uses the date in this format " mm,dd,yyyy"
but in my program I enter the date dd,mm,yyyy, is there is way to change it, I know that in sql you can do it, ms access is abit different, any solutions to that.
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Jul 26, 2006
Have a table which has 4 fields PatientID FirstName,LastName,BalanceDue,Due Date
Trying to create a query that will show all fields of the accounts that have due dates that are under 30 days. I tried this Under30: DateDiff("d",[DueDate].Now())criteria >0 And <30. But can't put anything in the parameter dialog box which after clicking ok shows any data. If I can get this to work my hope is to have 3 more catagories. over 30 days, over 60 days and over 90 days. I'm new at access and could really use some help.
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Mar 28, 2007
Morning
Pretty new to all this, so forgive my ignorance but i'm having problems with DateDiff. I have a table with 2 dates in it, and I want to work out how many working days (or working hours if possible) are between the 2 dates
SELECT DateDiff("d",[Date Opened]+[Date Closed])
FROM Dashboard;
I want it to print it the number of working days/ hours in a new column in the Dashboard table if possible.
Any ideas?
Thanks
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Jan 18, 2008
Hello,
I am trying to create a query that subtracts "TimeOUT" from "TimeIN" fields to calculate the total time worked.
The "TotalTime" is a new field that is not in the table, only in the query.
I am attempting to use the DateDiff function to calculate this, but I need to return both hours and minutes.
Currently, it looks like this:
Total Time: DateDiff("h",[Time IN],[Time OUT])
It works this way to return the total time in hours only.
The DateDiff function works to return either hours (h) or minutes (n) but I cannot figure out how to get both!
Perhaps someone has an answer or possibly a better way to get the results in hour:minute format for me??!!
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Jan 24, 2008
Hello,
I create query that subtract “schedule date” (mm/dd/yyyy) and “deliver date” (mm/dd/yyyy) to calculate difference deliveries days. I used function DateDiff different ways but query doesn’t work.
Expr1: DateDiff("mm/dd/yyyy","SCHEDULE DATE","DELIVERY DATE »")
And I have error: “data type mismatch in criteria expression” or doesn't work.
Thanks for helping.
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Mar 11, 2008
hey guys i have a query where i want to return all values with a difference greater than a value entered in the user.
Now DateDiff is working fine for this but the only problem i am having is if i set it to > FormTextBox nothing is being selected but if i actually put in a number e.g > 10 in the where clause it works fine. Any ideas?
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Jul 31, 2005
:) I'm having problems with a simple piece of code using datadiff. all i want is to know how days from today is 3/10/2006, which obivously will countdown as everyday gets closer.
joe
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Sep 16, 2005
I'm trying to add a txtfield that the control source is 65 years prior the current date.
So the control source should come up with "1940". I've tried the datediff function, but not having any luck...any suggestions?
Thanks.
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Feb 28, 2008
Does anyone know if it is possible to round down a datediff functions calculation?
Thanks.
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May 9, 2007
Hello,
I would like to ask if I would like to count the number of days between two date, but EXCLUDE Fridays, Saturdays, Sundays since the workers ONLY work Monday thru Thursday. I am using the function DateDiff as follow:
DateDiff("d",[Date1],[Date2]) with Date 2 is later than Date 1.
However, the results count calendar days. HOW do I exclude Fridays thru Sundays fall within Date 1 AND Date 2?
Please help!
Thanks so much,
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Nov 26, 2007
I've been able to use DateDiff to calculate the number of days between 2 date fields. The result is actual days. I'm looking for the result to just be business (Monday thru Friday) days. Can anyone help?
Thanks!!
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Apr 24, 2006
Hi:
I need to translate this VBA DateDiff into SAS and am not familiar with the "1>9,9"
I know "/" means divide but have never seen ""
Thanks for your help.
Steve
*Mth_1st_PNC: IIf(IsNull(DateDiff("d",DateDiff("d",[gest_age_days],[infantdob]),[calc_begin_pnc])/301),9, IIf(DateDiff("d",DateDiff("d",[gest_age_days],[infantdob]),[calc_begin_pnc])/301>9,9, IIf(DateDiff("d",DateDiff("d",[gest_age_days],[infantdob]),[calc_begin_pnc])/301<1,1,
DateDiff("d",DateDiff("d",[gest_age_days],[infantdob]),[calc_begin_pnc])/301)));
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Aug 28, 2006
I need to (accurately) calculate a rental period to fractions of a month.
ie) 1/1/2006 to 2/14/2006 would equal 1.5 months.
DateDiff("m",[Start],[End]) returns whole months.
DateDiff("d",[Start],[End])/30 is very close , but not precise.
Is there a way to accurately calculate fractions of a month?
Thanks,
Sup
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Mar 12, 2008
I have the following code in an expression.
I don't know why this isn't working! I feel like i've tried everything :(
I have an unbound text box on a form called "Aging".
I want it to show the number of days since the record was created.
=DateDiff("d",[txtDateAdded],Date())
I've also tried VB with no luck...
Dim TheDate As Date
TheDate = Me![txtDateAdded].Value
DateDiff("d", Now, TheDate)
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Jul 13, 2005
HI All,
I'm using
Between DMax("DateFieldName","TableName")-10 And DMax("DateFieldName","TableName") expression
in query to find time interval 10 days prior the last record puting this into Date field in my query Criteria. It's working fine.
But I want to find time interval a Month and an Year prior the last record.
I'm thinking to use DateDiff func to calculate properly intervals.
Between DMax("DateFieladName","TableName")-DateDiff ("m",1-2-100,1-1-100) And DMax("DateFieldName","TableName") --> for a month
That function also work but I'm not sure if it calculate correct result
Any better ideas? Thanks!
:cool:
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Dec 11, 2005
I have been using the following code in a query to calculate age. It has worked fine in my Office 2k system with service pack 3. I have installed the database on other office 2k machines and had to upgrade to service pack 3 or else I received Undefined function "format" in expression errors. I was getting a "missing" on MS windows common controls 26.0 (SP4). I found if I copied mscomct2.ocx from my machine to theirs it worked.
I have now installed the program on a new Office 2003 Laptop with latest SP upgrade and mscomct2.ocx installed (by me). But the "undefined" error still comes up. I have checked all the Object Libraries and they are there except on the new computer they are all (11.0) where on mine they are (9.0).
age: DateDiff("yyyy",[dateofbirth],Now())+Int(Format(Now(),"mmdd")<Format([dateofbirth],"mmdd"))
Has anyone any suggestions please?
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