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gauton

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Increase numeric value by one for each day

I have a table:

ID            AutoNumber
Alpha         Text
BatchNumber   Number

Here is what I need to be able to do:

The BatchNumber needs to always start with 900 for each new day and as records are added the BatchNumber is increased by one.  

At the start of a new day, the BatchNumber needs to start again with 900.

Anyone got any suggestions?
ASKER CERTIFIED SOLUTION
Avatar of Jim Dettman (EE MVE)
Jim Dettman (EE MVE)
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Avatar of Paurths
Paurths

hi gauton,

here is an example:
(first, create a new field in your table --> "DateCreated" = Date field, default value = Date()  )
in this example the name of the table = tblYourTable (change that according to your real name)

Private Sub cmdNewRecord_Click()
DoCmd.GoToRecord , , acNewRec
CreateBatch
End Sub

Private Sub CreateBatch()
Dim varMax As Variant
Dim varMaxDate As Variant

    If DCount("ID", "tblYourTable") = 0 Then
        'This is the first Record in the table
        Me.Batchnumber = 900
    Else
       
        If Date > DMax("DateCreated", "tblyourTable") Then
            'New date
            Me.Batchnumber = 900
        Else
            'Find highest date
            varMaxDate = DMax("datecreated", "tblYourtable")
            'find highest number for this date
            Me.Batchnumber = DMax("batchnumber", "tblyourtable", "datecreated = #" & Format(varMaxDate, "dd m yyyy") & "#") + 1
        End If
       
    End If
End Sub


cheers
Ricky
btw, i used  

format(varmaxdate, "dd m yyyy")  b/c i am in europe

Me.Batchnumber = DMax ("batchnumber", "tblyourtable", "datecreated = #" & Format(varMaxDate, "dd m yyyy") & "#") + 1
       

if u are in the US, just use:

Me.Batchnumber = DMax "batchnumber", "tblyourtable", "datecreated = #" & varMaxDate & "#") + 1
       


djeez Jim, u type very very fast....  :-)

cheers
Ricky
Ricky,

  Not as fast as you think<g>.  And I really hate to poke a hole in your solution, but when using DMax, always remind people that it will not work in a multi-user situation.  It's possible for two (or more!) users to get the same key value.

Jim.
True Jim,

something i learned using Cobol,

retrieve data,
check data,
user adjusts data,
retrieve data, compare, if necessary adjust automatic or warning,
lock data,
write data


(or something in that fashion...)
;-)
cheers
Ricky
Avatar of gauton

ASKER

Jim,

The small sample MDB would be great.

Garland
Avatar of gauton

ASKER

Jim,

The small sample MDB would be great.

Garland
need an e-mail address.

Jim.
If you don't want to post it, send an e-mail to jimdettman@earthlink.net

Jim.