MS-Access find closest date

Hello experts, I have a tricky problem with trying to find the closest date that I need some help with.

When a user enters a date in a text box, I would like to find the nearest date in a table, the closest future date if available otherwise the closest past date

e.g if the text box value is 29-Feb-2012 then I would like to return the value 02-Mar-2012 from the table [TBL_Dates].[Upload_Date] below.


[TBL_Dates].[Upload_Date]
17-Feb-2012
24-Feb-2012
02-Mar-2012
09-Mar-2012


Thanks for any help
lancegallagher_expertsexchangeAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

mbizupCommented:
You can use a VBA function -- this assumes that your table is populated (not empty):

Dim varNextHigher as Variant
Dim varNextLower as Variant

varNextHigher = DMin("Upload_Date", "tbl_Dates", "Upload_Date > #" & txtDate & "#")
varNextLower = DMin("Upload_Date", "tbl_Dates", "Upload_Date < #" & txtDate & "#")

msgbox "Closest Date = " & Nz(varNextHigher,NextLower)
0
Rey Obrero (Capricorn1)Commented:
for the nextlower use dmax instead of dmin


varNextLower = DMax("Upload_Date", "tbl_Dates", "Upload_Date < #" & txtDate & "#")
0
mbizupCommented:
Yup - that was a copy/paste mistake in my post.
0
10 Tips to Protect Your Business from Ransomware

Did you know that ransomware is the most widespread, destructive malware in the world today? It accounts for 39% of all security breaches, with ransomware gangsters projected to make $11.5B in profits from online extortion by 2019.

lancegallagher_expertsexchangeAuthor Commented:
Hi, having trouble getting it to work for me

I find that I have to enter the date in American date format

e.g if I enter 08/03/2012 and run the procedure I get closest date =

however if I enter 03/08/2012 and run the procedure I get closest date = 09/03/2012
0
mbizupCommented:
Try this:

Dim varNextHigher as Variant
Dim varNextLower as Variant

varNextHigher = DMin("Upload_Date", "tbl_Dates", "Upload_Date > #" & cDate(txtDate) & "#")
varNextLower = DMax("Upload_Date", "tbl_Dates", "Upload_Date < #" & CDate(txtDate) & "#")

msgbox "Closest Date = " & Nz(varNextHigher,NextLower)
0
lancegallagher_expertsexchangeAuthor Commented:
Hi, still the same problem when using

varNextHigher = DMin("Upload_Date", "tbl_Dates", "Upload_Date > #" & cDate(txtDate) & "#")
varNextLower = DMax("Upload_Date", "tbl_Dates", "Upload_Date < #" & CDate(txtDate) & "#")

what do you think I should try next?
0
mbizupCommented:
Is this a true Date field, or is it text?

And what format do the values appear in the table itself?
0
mbizupCommented:
You can also try formatting the dates identically:

varNextHigher = DMin("Upload_Date", "tbl_Dates", "Format('yyyy-mm-dd', Upload_Date) > '" & Format("yyyy-mm-dd", (txtDate) & "'")
varNextLower = DMax("Upload_Date", "tbl_Dates", "Format('yyyy-mm-dd', Upload_Date) < '" & Format("yyyy-mm-dd", (txtDate) & "'")

Open in new window

0
lancegallagher_expertsexchangeAuthor Commented:
Hi,

The text box txtDate is format as short date . The format of Upload_Date is short date too.
0
mbizupCommented:
Sorry- I've got the dates and format strings backwards;

varNextHigher = DMin("Upload_Date", "tbl_Dates", "Format(Upload_Date, 'yyyy-mm-dd') > '" & Format((txtDate) ,"yyyy-mm-dd") & "'")
varNextLower = DMax("Upload_Date", "tbl_Dates", "Format(Upload_Date, 'yyyy-mm-dd') < '" & Format((txtDate) ,"yyyy-mm-dd") & "'")

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
lancegallagher_expertsexchangeAuthor Commented:
Great, that works a treat. Thanks very much for your help and quick response.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Access

From novice to tech pro — start learning today.