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From: David Rowley <[email protected]>
To: [email protected]
Cc: Ba Jinsheng <[email protected]>
Cc: Andrei Lepikhov <[email protected]>
Cc: [email protected]
Subject: Re: CTE Inline On TPC-DS Query 95
Date: Sat, 28 Dec 2024 00:40:54 +1300
Message-ID: <CAApHDvopLOxy+FSBmu3j6OaBivj7B-ycDQgUDVPfr__HVTsi=g@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <SEZPR06MB649446E1B2745EEF5B49BA238A2E2@SEZPR06MB6494.apcprd06.prod.outlook.com>
	<CAApHDvouVmVBA8KvHuQHjsBS4v3dg9a_hGDQecA2BPYZgNhseQ@mail.gmail.com>
	<[email protected]>

On Sat, 28 Dec 2024 at 00:34, <[email protected]> wrote:
> Sometimes one is better and sometimes the other is best.
> In Oracle, the choice is done by COST. This should be the same for PostgreSQL. In essence, it is the same thing for views: inlining or materializing...

I don't doubt you. However, I did already mention the cost part in the
final paragraph of my email and I also hinted on why it might be more
difficult than you might imagine to implement. I don't want to put
anyone off making improvements in this area. I only aim to highlight
that it's not trivial to do so.

David

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