Re: MVCC and index-only read

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От Scott Marlowe
Тема Re: MVCC and index-only read
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Msg-id dcc563d10811181207r65d90361p1f00c5ce405aac5b@mail.gmail.com
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Ответ на Re: MVCC and index-only read  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: MVCC and index-only read  ("Scott Marlowe" <scott.marlowe@gmail.com>)
Re: MVCC and index-only read  ("Jonah H. Harris" <jonah.harris@gmail.com>)
Список pgsql-general
On Tue, Nov 18, 2008 at 1:03 PM, Jonah H. Harris <jonah.harris@gmail.com> wrote:
> On Tue, Nov 18, 2008 at 2:57 PM, Scott Marlowe <scott.marlowe@gmail.com> wrote:
>> Sounds like they're borrowing the code from innodb that does much the
>> same thing.  In Innodb, if a field is indexed, it lives only as an
>> index, not in the table and an index at the same time.
>
> They aren't borrowing anything, Oracle has had this functionality
> since at least Oracle 8i (1999).

Whoa, calm down Francis.  I'm not suggesting they stole it or
something.  Just that they're using the same basic concepts.

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