Re: Statistics Import and Export

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From: Robert Treat <[email protected]>
To: Corey Huinker <[email protected]>
Cc: Jeff Davis <[email protected]>
Cc: Robert Haas <[email protected]>
Cc: Andres Freund <[email protected]>
Cc: Nathan Bossart <[email protected]>
Cc: Tom Lane <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: jian he <[email protected]>
Cc: Bruce Momjian <[email protected]>
Cc: Matthias van de Meent <[email protected]>
Cc: Magnus Hagander <[email protected]>
Cc: Stephen Frost <[email protected]>
Cc: Ashutosh Bapat <[email protected]>
Cc: Peter Smith <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: [email protected]
Subject: Re: Statistics Import and Export
Date: Sat, 8 Mar 2025 10:56:20 -0500
Message-ID: <CAJSLCQ10++5GLeoRwNMQMKuaVrikEp2X6feBv=kYDtWmsVy-Pw@mail.gmail.com> (raw)
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On Fri, Mar 7, 2025 at 10:40 PM Corey Huinker <[email protected]>
wrote:

>
>> if you want everything --include=schema,data,statistics (presumably
>> redundant with the default behavior)
>> if you want schema only --include=schema
>> if you want "everything except schema" --include=data,statistics
>>
>
> Until we add a fourth option, and then it becomes completely ambiguous as
> to whether you wanted data+statstics, or you not-wanted schema.
>
>
except it is perfectly clear that you *asked for* data and statistics, so
you get what you asked for. however the user conjures in their heads what
they are looking for, the logic is simple, you get what you asked for.


>
>
> And if someday, for example, there is ever agreement on including role
>> information with normal pg_dump, you add "roles" as an option to be
>> parsed via --include without having to create any new flags.
>>
>
> This is pushing a burden onto our customers for a parsing convenience.
>
>
In the UX world, the general pattern is people start to get overwhelmed
once you get over a 1/2 dozen options (I think that's based on Miller's
law, but might be mis-remembering); we are already at 9 for this use case.
So really it is quite the opposite, we'd be reducing the burden on
customers by simplifying the interface rather than just throwing out every
possible combination and saying "you figure it out".


Robert Treat
https://xzilla.net

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