[aspyct]

I don't delete anything in those tables, however I do one update on 9/10 of the rows, at least.

I seem to remember there was a way to reorder rows in a table, maybe that could be useful.

[pramsey]

You can check if your data remain correlated after your updates. It's possible they do: SELECT correlation FROM pg_stats WHERE tablename = 'mytable' AND attname = 'mytimestamp';

[aspyct]

Oh nice! I had no idea, I'll try it, thanks :)