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Gin Implementation Page
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* Gin Implementation Page
@ 2020-08-14 01:24 PG Doc comments form <noreply@postgresql.org>
  2020-08-14 13:29 ` Re: Gin Implementation Page Pavel Borisov <pashkin.elfe@gmail.com>
  0 siblings, 1 reply; 2+ messages in thread

From: PG Doc comments form @ 2020-08-14 01:24 UTC (permalink / raw)
  To: pgsql-docs@lists.postgresql.org; +Cc: lajospolya94@gmail.com

The following documentation comment has been logged on the website:

Page: https://www.postgresql.org/docs/12/gin-implementation.html
Description:

In the part 'when the list is small enough to fit into a single index
"tuple" along with the key value' should the word "tuple" be replaced by the
word "page"?


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* Re: Gin Implementation Page
  2020-08-14 01:24 Gin Implementation Page PG Doc comments form <noreply@postgresql.org>
@ 2020-08-14 13:29 ` Pavel Borisov <pashkin.elfe@gmail.com>
  0 siblings, 0 replies; 2+ messages in thread

From: Pavel Borisov @ 2020-08-14 13:29 UTC (permalink / raw)
  To: lajospolya94@gmail.com; pgsql-docs@lists.postgresql.org

If I'm not mistaken GIN will replace posting list to posting tree (and so
shift it to another page) when on a current page there is not enough space.
But this does not necessarily mean that page is not enough to accommodate
current tuple(1). This rather means space left on a page is not necessary
due to occupation by neighbouring tuples. (2)

If we just replace tuple -> page we'll get meaning (1) which is not
precisely so.
I think existing description is accurate and doesn't need change basically.

Thanks for your question anyway!

-- 
Best regards,
Pavel Borisov

Postgres Professional: http://postgrespro.com <http://www.postgrespro.com;

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