Taking N-samples from each group in PostgreSQL
I have a table containing data that has a column named id that looks like below: id value 1 value 2 value 3 1 244 550 1000 1 251 551 700 1 540 60 1200 ... ... ... ... 2…
I have a table containing data that has a column named id that looks like below: id value 1 value 2 value 3 1 244 550 1000 1 251 551 700 1 540 60 1200 ... ... ... ... 2…