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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Andrey Rachitskiy <pl0h0yp1@gmail.com>
cc: feasiblechart@gmail.com, pgsql-bugs@lists.postgresql.org
Subject: Re: BUG #19615: COVAR_POP / COVAR_SAMP / REGR_SXY return 0.0 instead
 of NaN
In-reply-to: <2395189.1786463799@sss.pgh.pa.us>
References: <19615-c7e390593416f6b6@postgresql.org>
 <CAB8bMiu6BYW2TfQPaVs759e+Sf6UpZ_Ag60TfuDi57npfcY-yg@mail.gmail.com>
 <2395189.1786463799@sss.pgh.pa.us>
Comments: In-reply-to Tom Lane <tgl@sss.pgh.pa.us>
	message dated "Tue, 11 Aug 2026 11:56:39 -0400"
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Date: Wed, 12 Aug 2026 12:50:09 -0400
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I wrote:
> Yeah, I just arrived at pretty much the same conclusion.  We get
> Inf/NaN handling right for Sxx and Syy, but not for the cross-product
> Sxy.

Pushed after some fooling with the comment and test cases.

			regards, tom lane