METHOD_OPT => SIZE AUTO Quiz (Automatic For The People)

OK, a nice, easy, simple one today. No tricks, honest You have a table with 3 columns and lets say 1M rows. Column 1 is effectively unique, so it has 1M distinct values. Let’s say 1 – 1000000, not that it really matters. Column 2 has 254 distinct values, all evenly distributed so it has [...]