Components All New MacOS Windows Linux iOS
Examples Mac & Win Server Client Guides Statistic FMM Blog Deprecated Old


Checks if list has duplicates.

Component Version macOS Windows Linux Server iOS SDK
List 7.5 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "QuickList.HasDuplicateItems"; ListRef { ; CaseInsensitive } )   More


Parameter Description Example Flags
ListRef The reference to the list returned from QuickList.New function. $List
CaseInsensitive Available in MBS FileMaker Plugin 14.0 or newer.
Whether to perform comparison case insensitve.
By default we do case sensitive operations, which are faster.
Pass 1 for insensitve or 0 for sensitive.
0 Optional


Returns 1, 0 or error.


Checks if list has duplicates.
Returns 1 if duplicate lines are found or 0 if not.

See also

Release notes

Blog Entries

This function checks for a license.

Created 21st October 2017, last changed 10th December 2023

QuickList.GetValue - QuickList.HasValue