Hi there, in my app, I have a sheet with movies. One of the columns is a user-specific “Like” column.
Now I’d like to filter the movie list to get only the intersection between what the current user liked, and what another user of the app liked.
Ex:
- I liked “Jurassic Park”, “E.T” and “2001 Space Odyssey”
- The other user liked “Indiana Jones”, “Jurassic Park” and “Jaws”
- The app returns “Jurassic Park” only
Do you have any idea if and how this is achievable?
User-specific data, at the moment, can’t be accessed that way. You have to record the “like” in your data as independent rows for this to happen.
Damn. Does that means I have to use the sheet like a relational database? That for each like, I have to create one new row in a “likes” sheet, with a reference key to the corresponding movie?
Yes that’s true. Rollups over user-specific data, or accessing data the way you want is tricky and hasn’t been rolled out yet even in staging mode.
Yeah, that was my feeling as well since I couldn’t find a way to query data from a different sheet 
There may be a way to mashup data in a new sheet using relations only though… I’ll have to think about it…
Thanks!
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