Re: Mysql -> Postgresql pitfalls

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От Josh Berkus
Тема Re: Mysql -> Postgresql pitfalls
Дата
Msg-id 200308040949.01128.josh@agliodbs.com
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Ответ на Re: Mysql -> Postgresql pitfalls  ("scott.marlowe" <scott.marlowe@ihs.com>)
Ответы Re: Mysql -> Postgresql pitfalls  ("Chad N. Tindel" <chad@tindel.net>)
Список pgsql-docs
Chad, Scott:

> > Yes.  The documentation very clearly states using sequences instead of
> > auto-increment, but it doesn't make it clear that inserting the id's into
> > data by hand doesn't cause the sequence to be auto-matically incremented.
> >  It'd be nice of postgres had a way to trigger an update of the sequence
> > value after every insert containing an id clumn.

Um, how would this be a bennefit?   If you're inserting rows 101-259, how does
it benefit you to have the system automatically increment the sequence from
601-759?

FWIW, in 7.5 we're likely to implement SQL3 IDENTITY columns ... basically
just a SERIAL column where you don't have the option of inserting your own
value, you have to take what it gives you.

--
Josh Berkus
Aglio Database Solutions
San Francisco

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