[mattashii]

I'm also concerned about these (tested!) errors:

> https://github.com/lanterndata/lantern/blob/040f24253e5a2651...

> Operator <-> can only be used inside of an index

Isn't the use of the distance operator in scan+sort critical for generating the expected/correct result that's needed for validating the recall of an ANN-only index?

[diqi]

Ah, thank you for noticing! We actually have typo in the error message. It actually should be the operator <?> instead of <->.

There's some context on the operator <?> here: https://github.com/lanterndata/lantern?tab=readme-ov-file#a-...