Re: Mysql -> Postgresql pitfalls

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От Chad N. Tindel
Тема Re: Mysql -> Postgresql pitfalls
Дата
Msg-id 20030804192948.GA48747@calma.pair.com
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Ответ на Re: Mysql -> Postgresql pitfalls  ("scott.marlowe" <scott.marlowe@ihs.com>)
Список pgsql-docs
> > > 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.
> >
> > Interesting... how do you import data from a dump with such columsn?
>
> Easy, after you import the last row, you
>
> select setval('seqname',lastvalue);
>
> on the sequence.  Like I said above, it's mostly just a different way of
> doing things in Postgresql, and often those different ways are less
> obvious, and quite often, being less obvious is actually safer even if
> it is a littler harder to learn up front.

But you just said that I can't actually include the id column in an insert
query.  So how would I import data from a dump and ensure that the id columns
are what I expect them to be?

Chad

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