Assuming no duplicates, the only case that would make sense would be if all but a single byte was different (sequentially across all records). Even then you’d end up with more than the number of bytes we’re talking about, even excluding the size of the index (which would be non-trivial).

Why don’t you just read what the guy said by following the links in the forum? Surely, you can find more explanation there that will answer some of your questions? Hahaha! :)

His thing has collisions, so it answers none of the questions.

Also they already did follow the link. That's why they said "they don’t actually store the keys, so the quote is misleading", which you responded to with a laugh and nothing else. And that happened many hours before you made this new comment.

Heh, yeah. "Store" can have multiple meanings.

I'm not sure that guy really understood what was going on. If he'd followed the links he would've found the code. Or at least a technical description. So why need to play dumb and ask here, while trying to control the discussion?

I don't like that kind of thing. If you're okay with it, alright. But that's not me.