Compare two libraries to find exclusive items

Gurdas_Sandhu

Does anyone have a script to compare two libraries and list items existing in one but missing in other?I want to compare one of my group libraries to My Library.The group libraries has a half-dozen more items than My Library and I would like to know which items are in my Group library but missing in My Library.I probably deleted these items from My Library and would like to delete them from the Group Library, too.

adamsmith

Export to CSV and sort by title (or read into R and remove all duplicates)?

Gurdas_Sandhu

Thanks.In the absence of a better solution, I can use this approach.There might be instances where I fixed the formatting or an error in the title and that might cause the title match to be somewhat less accurate.There are a couple thousand articles.

@danstillmanprovided a script in a different post that identified items that had a one-to-many relationship, and that helped a lot.
188BET靠谱吗https://forums.zotero.org/discussion/82450/drag-drop-from-my-library-to-group-fails-for-some-items

I was wondering if that script or a similar script can find instances of one-to-none relationship (that is, an item in a group that has no counterpart in My Library)?Important point: all the items in the group are created by drag-drop from My Library.