Looking for a good date for Query/400?

Query/400 has many useful date functions. Unfortunately, they do not work with the 7 or 8 digit numeric fields often used to store dates in files. Luckily, Query/400 also includes two functions that can be used to transform these reluctant dates into something Query/400 will dance with.

First, define an intermediate field (called DT in this example) using the DIGITS function on the numeric date field:

DT DIGITS(numeric date field)

DT will be a character representation of the numeric date field.

Next, use the SUBSTR function to change the intermediate field into the job date format (in this example MDY from a 7 digit number CYYMMDD):

DATEMDY  SUBSTR(DT,4,2) || '/' || 
         SUBSTR(DT,6,2) || '/' ||

The field DATEMDY will now be correctly interpreted by Query/400 as a date field. If DATEMDY contained someone's hire date, the following expression will return the number of years worked:



The Best Web Links: tips, tutorials and more.

Ask your programming questions--or help out your peers by answering them--in our live discussion forums.

Ask the Experts yourself: Our application development gurus are waiting to answer your programming questions.

This was first published in September 2001

There are Comments. Add yours.

TIP: Want to include a code block in your comment? Use <pre> or <code> tags around the desired text. Ex: <code>insert code</code>

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
Sort by: OldestNewest

Forgot Password?

No problem! Submit your e-mail address below. We'll send you an email containing your password.

Your password has been sent to:

Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.