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help / color / mirror / Atom feedFrom: Corey Huinker <[email protected]>
To: David Rowley <[email protected]>
Cc: Ryohei Takahashi (Fujitsu) <[email protected]>
Cc: [email protected] <[email protected]>
Subject: Re: Can we use Statistics Import and Export feature to perforamance testing?
Date: Sat, 12 Apr 2025 14:44:34 -0400
Message-ID: <CADkLM=fGKmy71O3X97DZVH2DdZi3oPtmL2AYcsCZb=SGkv9Ymw@mail.gmail.com> (raw)
In-Reply-To: <CAApHDvoKmg-otMDDWeGgHzsVF+TWc4-8+s9XxiXjMv6ZfvMFOA@mail.gmail.com>
References: <TY3PR01MB118914FCCBBDC126C34AA287382B52@TY3PR01MB11891.jpnprd01.prod.outlook.com>
<CAApHDvozyyTc19zhnWSqMhvW_dqYJCCkdh5mo3DA65zEFPu8fg@mail.gmail.com>
<CADkLM=fV95NKw4x9pBtaXHtQP4=21nmjDBuv2XJm3ZiNgc0AKw@mail.gmail.com>
<CAApHDvoKmg-otMDDWeGgHzsVF+TWc4-8+s9XxiXjMv6ZfvMFOA@mail.gmail.com>
>
> You might be getting confused because the code does look at the
> pg_class fields, but that's only to estimate the tuple density. When
> pg_class has those estimates, they're used to calculate the estimated
> density by doing reltuples / relpages, but that average rows per page
>
>
Thanks for the clarification.
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Subject: Re: Can we use Statistics Import and Export feature to perforamance testing?
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