Jump to content
View in the app

A better way to browse. Learn more.
FMForums.com

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

Using a Self Join Relationship to List Single Incidence Of Duplicate Value

Len
in Relationships

Featured Replies

  • Newbies

Could anyone explain how I can make a list using a self-join relationship of unique (most recent based on descending Date and Time) incidence of a duplicate value? I am a chiropractor and want to generate a list of the most recent visit for all patients within a date range. patients each have a unique ID and the daily visits are identified via a text counter serial number field. I appreciate any help... Thanks!

The self join in your visits table should be keyed on the PatientID key. The relationship can be sorted on the child side descending order based on the date. Now you can reference that related child date field on the parent's layout and it will display the latest date.

Create an account or sign in to comment

https://fmforums.com/topic/63098-using-a-self-join-relationship-to-list-single-incidence-of-duplicate-value/
Go to topic listing

Important Information

By using this site, you agree to our Terms of Use.

I accept

Configure browser push notifications
Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.