?
Solved

Format of date stored as text compared to date() => problem with month

Posted on 2014-01-29
4
Medium Priority
?
444 Views
Last Modified: 2014-01-29
I'm using format to arrange a date time stored as text:

Format(Mid([CUSTOM_FIELD],5,2) & "/" & Mid([CUSTOM_FIELD],7,2) & "/" & Left([CUSTOM_FIELD],4),"mm/dd/yyyy")

so that I can then use date() to work out data from yesterday date()-1

The trick is that my formating creates a month as 2 digits always and date() will return the month as a single digit creating a situation where 01/28/2014 and 1/28/2014 are not recognized as the same.

I'm wondering what I can do with this to correct for this:

WHERE (((Format(Mid([CUSTOM_FIELD],5,2) & "/" & Mid([CUSTOM_FIELD],7,2) & "/" & Left([CUSTOM_FIELD],4),"mm/dd/yyyy"))=Date()-1));
0
Comment
Question by:ghettocounselor
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 61

Accepted Solution

by:
mbizup earned 2000 total points
ID: 39817826
Try this (compares both sides using the same format):

WHERE (((Format(Mid([CUSTOM_FIELD],5,2) & "/" & Mid([CUSTOM_FIELD],7,2) & "/" & Left([CUSTOM_FIELD],4),"mm/dd/yyyy"))=Format(Date()-1),"mm/dd/yyyy)");

Open in new window



Or if your text field is a standard/valid date format:

WHERE CDate([CUSTOM_FIELD])  = dateadd("d", -1, Date())
0
 

Author Closing Comment

by:ghettocounselor
ID: 39817850
Sweet, thanks for quick response.
Notes:
Needed one more paren after format
Format((Date()-1),"mm/dd/yyyy")
0
 
LVL 32

Expert Comment

by:awking00
ID: 39817876
It appears that your "dates" are stored as text in a 'yyyymmdd' format, so it might be easier to convert date() - 1 to text to do the compare. This only works for that format since any comparison will be based on ascii values.
where custom_field = format(date() - 1,"yyyymmdd")

A good example why you should NEVER store dates as anything other than date/time datatypes if you need to perform any kind of data math.
0
 
LVL 32

Expert Comment

by:awking00
ID: 39817890
Be careful! ASCII comparisons can produce some unwanted results. For example,
01/15/2014 will come before 02/15/2013. The reason I said you can get away with yyyymmdd formats.
0

Featured Post

Get MongoDB database support online, now!

At Percona’s web store you can order your MongoDB database support needs in minutes. No hassles, no fuss, just pick and click. Pay online with a credit card. Handle your MongoDB database support now!

Question has a verified solution.

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

This article describes two methods for creating a combo box that can be used to add new items to the row source -- one for simple lookup tables, and one for a more complex row source where the new item needs data for several fields.
AutoNumbers should increment automatically, without duplicates.  But sometimes something goes wrong, and the next AutoNumber value is a duplicate.  This article shows how to recover from this problem.
What’s inside an Access Desktop Database. Will look at the basic interface, Navigation Pane (Database Container), Tables, Queries, Forms, Report, Macro’s, and VBA code.
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…

762 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