Solved

MS ACCESS text datetime field compared with datereltoday in query

Posted on 2013-12-10
4
449 Views
Last Modified: 2013-12-10
I have a text field called CUSTOM_FIELD with date time data: 201312092304
And I'd like to do a where statement against this but will need to convert/format the data as a proper date in the process; something like this eventually once formated ((PHM_ENHANCED_CHGS.CUSTOM_FIELD)=DATERELTODAY(-1)))
0
Comment
Question by:ghettocounselor
  • 2
4 Comments
 
LVL 47

Expert Comment

by:Dale Fye (Access MVP)
ID: 39708784
I cannot imagine why someone would create a string to represent a date! Well, actually I can imagine it because I run into it all the time.  But I don't know why they would want to do so.

So, rather than try to create a complicated string of Lefts, mids, rights, ..., I would recommend you write a function to do the conversion for you, then call the function and pass it the value of your Custom_Field.  An example might look like:

Public Function ConvDate(DateStr As Variant) As Variant

    If IsNull(DateStr) Then
        ConvDate = Null
        Exit Function
    End If
    
    Dim lngYear As Long
    Dim intMonth As Integer
    Dim intDay As Integer
    Dim intHour As Integer
    Dim intMinute As Integer
    
    lngYear = Val(left(DateStr, 4))
    intMonth = Val(Mid(DateStr, 5, 2))
    intDay = Val(Mid(DateStr, 7, 2))
    intHour = Val(Mid(DateStr, 9, 2))
    intMinute = Val(Mid(DateStr, 11, 2))
    
    ConvDate = DateSerial(lngYear, intMonth, intDay) _
             + TimeSerial(intHour, intMinute, 0)
    
End Function

Open in new window

and your where clause might look like:

WHERE ConvDate(PHM_ENHANCED_CHGS.CUSTOM_FIELD)=DATERELTODAY(-1)
0
 
LVL 61

Accepted Solution

by:
mbizup earned 500 total points
ID: 39708797
You could take the reverse approach and format the DATERELTODAY:

LEFT(PHM_ENHANCED_CHGS.CUSTOM_FIELD,8) = Format(DATERELTODAY(-1),"YYYYMMDD")

Open in new window

(assuming that DATERELTODAY(-1) gives results in a date format)

Alternatively:


LEFT(PHM_ENHANCED_CHGS.CUSTOM_FIELD,8) = Format(Date() - 1,"YYYYMMDD")

Open in new window

0
 
LVL 47

Expert Comment

by:Dale Fye (Access MVP)
ID: 39708959
Yeah, that would work too Miriam.  Why do I always seem to look for the function when a simple formatting would work?  ;-)

Although the formatting of the [CUSTOM_FIELD] appears to include HHMM as well, so the OP might need to try:

PHM_ENHANCED_CHGS.CUSTOM_FIELD = Format(DATERELTODAY(-1),"YYYYMMDDHHNN")

if the hour and minute are critical.
0
 

Author Closing Comment

by:ghettocounselor
ID: 39710043
This worked as advertised.
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The Visual Basic for Applications (VBA) language is at the heart of every application that you write. It is your key to taking Access beyond the world of wizards into a world where anything is possible. This article introduces you to…
In a multiple monitor setup, if you don't want to use AutoCenter to position your popup forms, you have a problem: where will they appear?  Sometimes you may have an additional problem: where the devil did they go?  If you last had a popup form open…
With Microsoft Access, learn how to start a database in different ways and produce different start-up actions allowing you to use a single database to perform multiple tasks. Specify a start-up form through options: Specify an Autoexec macro: Us…
Polish reports in Access so they look terrific. Take yourself to another level. Equations, Back Color, Alternate Back Color. Write easy VBA Code. Tighten space to use less pages. Launch report from a menu, considering criteria only when it is filled…

821 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question