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To: 'Kyotaro Horiguchi' <[email protected]>
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Subject: RE: In-placre persistance change of a relation
Date: Fri, 13 Nov 2020 07:15:41 +0000
Message-ID: <OSBPR01MB48880392945A391332DDB65CEDE60@OSBPR01MB4888.jpnprd01.prod.outlook.com> (raw)
In-Reply-To: <TYAPR01MB2990D25E5CE77A095ADC90A3FEE60@TYAPR01MB2990.jpnprd01.prod.outlook.com>
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<TYAPR01MB2990D25E5CE77A095ADC90A3FEE60@TYAPR01MB2990.jpnprd01.prod.outlook.com>
Hello, Tsunakawa-San
> Do you know the reason why data copy was done before? And, it may be
> odd for me to ask this, but I think I saw someone referred to the past
> discussion that eliminating data copy is difficult due to some processing at
> commit. I can't find it.
I can share 2 sources why to eliminate the data copy is difficult in hackers thread.
Tom's remark and the context to copy relation's data.
https://www.postgresql.org/message-id/flat/31724.1394163360%40sss.pgh.pa.us#[email protected]...
Amit-San quoted this thread and mentioned that point in another thread.
https://www.postgresql.org/message-id/CAA4eK1%2BHDqS%2B1fhs5Jf9o4ZujQT%3DXBZ6sU0kOuEh2hqQAC%2Bt%3Dw%...
Best,
Takamichi Osumi
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Subject: RE: In-placre persistance change of a relation
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