Column propagation to other rows?
Hi,
I have customn column read:yes/no, where I manually track if I read some book.
I'd like to create virtual library which would consist only of authors with books I haven't read yet, but I read at least one of their books.
I thought I could do that by some kind of custom column which would be set to true if there is any book by the same author marked as read:yes.
Is this possible?
Thanks,
J.
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