Please Note: This article is written for users of the following Microsoft Word versions: 97, 2000, 2002, and 2003. If you are using a later version (Word 2007 or later), this tip may not work for you. For a version of this tip written specifically for later versions of Word, click here: Proper Comparisons for Dates in Merge Fields.

Proper Comparisons for Dates in Merge Fields

by Allen Wyatt
(last updated June 10, 2017)

2

Volker is having a problem comparing dates in a merge field. His database contains a Birthdate field, which (obviously) contains a birth date for each person in the database. As he merges each record, he wants to compare the Birthdate field to a reference date, and then take some action based on the result. The logic he is attempting to use looks like this:

{IF {MERGEFIELD Birthdate} > "02/26/1981" "Under 30" "Over 30"}

The problem is that the comparison doesn't work properly; it doesn't return consistent results. One possible solution is to use a format switch in the merge field, in the following manner:

{IF {MERGEFIELD Birthdate\@"MM/DD/YYYY"} > "02/26/1981" "Under 30" "Over 30"}

This puts the incoming information into a comparable format. The results you get from this approach may depend, however, on characteristics of the data source, independent of Word. You could also try putting the dates into a year-first format, such as the following:

{IF {MERGEFIELD Birthdate\@"YYYY/MM/DD"} > "2011/02/26" "Under 30" "Over 30"}

If the comparison still yields inconsistent results, then the only solution may be to do a mathematical conversion on the date (actually, on both Birthdate and the reference date) so that you have an actual numeric comparison. You can do this by converting the date into a Julian value, which requires a very complex merge field, like the one shown here:

{IF {QUOTE {SET a{=INT((14-{MERGEFIELD BIRTHDATE \@ M})/12)}}
{SET b{={MERGEFIELD BIRTHDATE \@ yyyy}+4800-a}}
{SET c{={MERGEFIELD BIRTHDATE \@ M}+12*a-3}}
{SET d{MERGEFIELD BIRTHDATE \@ d}}
{SET jd{=d+INT((153*c+2)/5)+365*b+INT(b/4)-INT(b/100)+INT(b/400)-32045}}
{jd \#,0}} > 2,443,056 "over 30" "under30"}

Such an approach may look intimidating, but is just the brute-force method necessary for some instances.

WordTips is your source for cost-effective Microsoft Word training. (Microsoft Word is the most popular word processing software in the world.) This tip (356) applies to Microsoft Word 97, 2000, 2002, and 2003. You can find a version of this tip for the ribbon interface of Word (Word 2007 and later) here: Proper Comparisons for Dates in Merge Fields.

Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He is president of Sharon Parq Associates, a computer and publishing services company. ...

MORE FROM ALLEN

Ignoring the Spelling of Proper Nouns

Proper nouns (such as the names of people) are routinely marked as incorrect by Word's spell checker. If you are tired of ...

Discover More

Ranges on Multiple Worksheets

Referring to a range of cells on the current worksheet is easy. But what if you want to refer to a range on a number of ...

Discover More

Relative References when Recording Macros

When you record a macro, make sure that you know how Excel is recording your cell movements. This tip explains the ...

Discover More

Comprehensive VBA Guide Visual Basic for Applications (VBA) is the language used for writing macros in all Office programs. This complete guide shows both professionals and novices how to master VBA in order to customize the entire Office suite for their needs. Check out Mastering VBA for Office 2010 today!

More WordTips (menu)

Using Unique Document Serial Numbers

If you need to include serial numbers in your printed matter (labels, letters, documents, etc.), the best way is through ...

Discover More

Merging Only a Date from Access

When you are merging data from an Access database, you may get more information than you want, especially when it comes ...

Discover More

Checking Your Data File

When you get ready to merge a document with a data source, you'll want to make sure that everything is "as expected" ...

Discover More
Subscribe

FREE SERVICE: Get tips like this every week in WordTips, a free productivity newsletter. Enter your address and click "Subscribe."

View most recent newsletter.

Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] in your comment text. You’ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is 5 + 2?

2019-03-21 13:07:58

Alvaro Hernandez

After thinking for no more than 20 minutes, I came up with a simpler solution (that seems to work for my specific case , but I haven´t either thought carefully about it or tested it at length).
I do know I´m oversimplifying leap years and months that don´t have exactly 30 days.
It's like this:

{IF {QUOTE {SET a{={MERGEFIELD DATE \@ yyyy}*365+{MERGEFIELD DATE \@ MM}*30+{MERGEFIELD DATE \@ d} {a \# 0}} > 736866 "a" "b"}

The comparison should be done with the desired date, e.g., 09/26/2018 (2018*365+09*30+26 = 736866).
Any thoughts?
Thanks.


2019-03-21 08:06:57

Alvaro Hernandez

Dear Mr. Wyatt,
Thank you for your tips. They are really helpful.
However, as far as this tip goes, I´d like to suggest another review because it seems to me (and let me point out I´m not a proficient VBA programmer) that it may be in error. For instance, the year of the comparison date in the example changes from 1981 to 2011. Which is the correct one? In addition, can you please clarify whether the basis date for comparison (2,443,056) was obtained using the formulas you used for jd (cause I was not able to reproduce such result using either year). And last, but not the least, I tried using your tip and it did not work for me (assuming I've implemented it correctly).
Thank you for your time and great tips (which I often come across).


This Site

Got a version of Word that uses the menu interface (Word 97, Word 2000, Word 2002, or Word 2003)? This site is for you! If you use a later version of Word, visit our WordTips site focusing on the ribbon interface.

Newest Tips
Subscribe

FREE SERVICE: Get tips like this every week in WordTips, a free productivity newsletter. Enter your address and click "Subscribe."

(Your e-mail address is not shared with anyone, ever.)

View the most recent newsletter.