Обсуждение: [HACKERS] Extracting GiST index structure stats?

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[HACKERS] Extracting GiST index structure stats?

От
Thomas Mercieca
Дата:

Hi all, I am interested in getting simple statistics of a GiST index structure. For example, height of tree


It seems that the other indexes have a metapage for this. I am still unsure but it looks to me like the GiST access method internal does not work exactly in this way so it is a bit more complicated to extract this data. Is this correct? If I wanted to extract this kind of stat (back to the height of tree example) what would be the right approach? Thanks a lot.


Regards,

Thomas

Re: [HACKERS] Extracting GiST index structure stats?

От
Arthur Zakirov
Дата:
Hello,

On 15.04.2017 20:38, Thomas Mercieca wrote:
> Hi all, I am interested in getting simple statistics of a GiST index 
> structure. For example, heightof tree.
> 
> 
> It seems that the other indexes have a metapage for this. I am still 
> unsure but it looks to me like the GiST access method internal does not 
> work exactly in this way so it is a bit more complicated to extract this 
> data. Is this correct? If I wanted to extract this kind of stat (back to 
> the height of tree example) what would be the right approach? Thanks a lot.
> 
> 

Have you tried the 'gevel' module? You can find it here:
http://www.sai.msu.su/~megera/wiki/Gevel

-- 
Arthur Zakirov
Postgres Professional: http://www.postgrespro.com
Russian Postgres Company