SPSS macro for removing duplicates
SPSS has a built in GUI function for removing duplicates however it is lacking some of the key options that I like to use (perform case insensitive dedupe, drop duplicates, drop the flag, etc).
I built my own macro which is very easy to use and has all the options I typically need.
The following video demonstrates them in use.
Removing duplicates in SPSS using a custom macro

Here are the SPSS macros
Use the following for a webpage post:
SPSS macro deduper


SPSS macro for removing duplicates