"contains" on a list - frontend vs backend

Imagine you have :

User's List of Favourite Books each item's Author contains This Book's Author

i.e. if this author wrote one of the user’s fave books.

All is good (ignore books that have two authors!)

But it thows an error if you put exactly this is the back end. You need to do a :

User's List of Favourite Books each item's Author intersects with This Book's Author : count > 0

I can’t for the life of me understand why :man_shrugging:

This topic was automatically closed after 70 days. New replies are no longer allowed.