Re: going crazy with serial type

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От Brian Avis
Тема Re: going crazy with serial type
Дата
Msg-id 3C59A301.7030209@searhc.org
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Ответ на going crazy with serial type  (Cindy <ctmoore@uci.edu>)
Список pgsql-general
I don't believe you have to enter the serial at all.

So instead of this.

insert into mytable ('', 1, 2);

Try this.

insert into mytable (a, b) VALUES (1, 2);

I think that will work the way you want. Although I am a beginner myself.

Good luck.


Cindy wrote:

>OK.  My background is in mysql, and I've been converting over to psql.  Just
>by way of background.
>
>I do !NOT! understand how the SERIAL type works.  I want something
>like I had in mysql that would generate new, unique numbers, each time
>I added a new record.  I want something that sits down, shuts up, and
>just GIVES me the number on demand.  (I also want a guarantee that the
>unique number is consecutive, and is never zero or negative.)  In short,
>I want the AUTO_INCREMENT behavior.
>
>But so far it's been one giant headache.  Tell me, how do I insert
>new records into a table *without* specifying an actual number?  In
>mysql it's just an empty field.  I have been unable to determine how
>to do this in psql other than to ascertain it certainly isn't through
>the same way.
>
>I've been through the documentation, but for some reason, no one seems
>to think a programmer would ever want functionality like mysql's
>AUTO_INCREMENT, so as far as I can tell, it's not even addressed.
>
>I'd appreciate any help.  I basically have a table:
>
>create table mytable (mytable_id serial, a int, b int);
>
>and
>
>insert into mytable ('', 1, 2); is accepted but then following
>insert into mytable ('', 5, 6); etc, is rejected due to "duplicate key"
>
>
>Thanks,
>--Cindy
>

--
Brian Avis
SEARHC Medical Clinic
Juneau, AK 99801
(907) 463-4049
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