Victor Mariano Leite

Andrea R. thanks a lot for the tip! I was using a numeric, but you gave me an idea, when the fileId's are generated sequentially, I think it's approximally a "random" sample in my case getting only the one's that fileId % 10 == 0, since there in my case there is (i hope haaha) no bias in being the 10th item, it helped a lot 🙂

Andrea R. Hmm, i'm thinking how i could do that, because I wanted to make """kind""" of a stratified sampling, there are 3 fields i've wanted to get: For example: fileId, pageId, pagemetadataId And I wanted to sample X fileId's, and get all of their pages and pages metadata. I don't know if there is a way to filter fileId if I want to sample it previously. I was going to sample it first in a subquery, then use the fileId's returned as a constraint for the outside query. Does it make sense? hahaha