> May I ask how it got so fast? Can you give a bit more detail on this

one?

>
> Specifically, how did the containing phrase got so fast?

The code was "refactored".

> Are you creating a word-by-word index on a text field, and use it when
> users use "containing"? Or, did you just fix a bug or something?

First, the changes were done by Nickolay Samofatov, not myself.

Second, the changes did not involve any new indexing schemes, just
"simple" code optimization.


Sean