Re: Serial

From: "A(dot) Kretschmer" <andreas(dot)kretschmer(at)schollglas(dot)com>
To: pgsql-sql(at)postgresql(dot)org
Subject: Re: Serial
Date: 2007-04-03 10:40:12
Message-ID: 20070403104012.GD30108@a-kretschmer.de
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am Tue, dem 03.04.2007, um 12:29:37 +0200 mailte Shavonne Marietta Wijesinghe folgendes:
> I'm mixed up now. I was suppose to something but i did something else.
>
> OK so i have my FAMOUS table with the n_gen serial NOT NULL
> I got lost a bit. When and where do i use the setval() ??

Only to manipulate the current value of this sequence.

>
> For example i INSERT records via ASP. so i should put the setval() in the
> INSERT INTO of the ASP page??

No. You can define your table like:

create table foo (id serial, ...)

This creates implicit a own sequence and set the default for id to
nextval().

> And even when i do a SELECT i should use the setval()??

For a select? No.

12:39 < akretschmer> ??sequence
12:39 < rtfm_please> For information about sequence
12:39 < rtfm_please> see http://techdocs.postgresql.org/college/001_sequences/index.php
12:39 < rtfm_please> or http://www.postgresql.org/docs/current/interactive/sql-createsequence.html
12:39 < rtfm_please> or http://www.postgresql.org/docs/current/static/functions-sequence.html

Andreas
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Andreas Kretschmer
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  • Re: Serial at 2007-04-03 10:29:37 from Shavonne Marietta Wijesinghe

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