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help / color / mirror / Atom feedFrom: Andrei Lepikhov <[email protected]>
To: Corey Huinker <[email protected]>
To: Tomas Vondra <[email protected]>
Cc: Ashutosh Bapat <[email protected]>
Cc: [email protected]
Subject: Re: Statistics Import and Export
Date: Fri, 15 Dec 2023 15:36:08 +0700
Message-ID: <[email protected]> (raw)
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On 13/12/2023 17:26, Corey Huinker wrote:> 4. I don't yet have a
complete vision for how these tools will be used
> by pg_upgrade and pg_dump/restore, the places where these will provide
> the biggest win for users.
Some issues here with docs:
func.sgml:28465: parser error : Opening and ending tag mismatch: sect1
line 26479 and sect2
</sect2>
^
Also, as I remember, we already had some attempts to invent dump/restore
statistics [1,2]. They were stopped with the problem of type
verification. What if the definition of the type has changed between the
dump and restore? As I see in the code, Importing statistics you just
check the column name and don't see into the type.
[1] Backup and recovery of pg_statistic
https://www.postgresql.org/message-id/flat/724322880.K8vzik8zPz%40abook
[2] Re: Ideas about a better API for postgres_fdw remote estimates
https://www.postgresql.org/message-id/7a40707d-1758-85a2-7bb1-6e5775518e64%40postgrespro.ru
--
regards,
Andrei Lepikhov
Postgres Professional
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