Re: really thanks,Teodor Sigaev. HOW ts2 implment that

> I know the LUCENE " inverted index " is just like follows:
>
>
>
> keyword doc_id[frequence] location
> guangzhou 1[2] 3，6
> he 2[1] 1
> i 1[1] 4
> live 1[2],2[1] 2，5，2
> shanghai 2[1] 3

Yes

> so ,before I thought that A node In GiST tree is very like the above :
>
> In the tree's node , it has several value for storing its's
>
> turple_id[frequence] location ,and that is why I thoutht the "
> BUT now , I'm lost again ,how does Gist tree store lexem and how to find
> his correspoding tuples in database( including frequence location)?

Tsearch2 use "direct" index: each leaf tuple in tree represent document,
internal tuples represents union of documents.

--
Teodor Sigaev E-mail: teodor(at)sigaev(dot)ru
WWW: http://www.sigaev.ru/