Re: number of distinct values in tsearch2 gist index

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От Teodor Sigaev
Тема Re: number of distinct values in tsearch2 gist index
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Msg-id 44CDD443.7020700@sigaev.ru
обсуждение исходный текст
Ответ на number of distinct values in tsearch2 gist index  (Kevin Murphy <murphy@genome.chop.edu>)
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vacuum;

Kevin Murphy wrote:
> In the output of gist_stat() in the gevel contrib module, is the number
> of tuples the number of distinct values stored in the index?  Is the
> number (6M) so large because the positions are part of the values?  I'm
> guessing I can't determine the number of distinct lexemes from the
> output of gist_stat() ....
>
> select gist_stat('idxfti_idex');
>          gist_stat
> ------------------------------
> Number of levels:          5
> Number of pages:           244881
> Number of leaf pages:      234515
> Number of tuples:          6017003
> Number of invalid tuples:  0
> Number of leaf tuples:     5772123
> Total size of tuples:      1846434636 bytes
> Total size of leaf tuples: 1779845516 bytes
> Total size of index:       2006065152 bytes
>
> (1 row)
>
> Time: 193023.012 ms
>
> Thanks,
> Kevin Murphy
>
>
> ---------------------------(end of broadcast)---------------------------
> TIP 5: don't forget to increase your free space map settings

--
Teodor Sigaev                                   E-mail: teodor@sigaev.ru
                                                    WWW: http://www.sigaev.ru/

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