From: Indira Muthuswamy <indumuthu@gmail.com>
To: Jim C. Nasby <jim@nasby.net>
Cc: pgsql-sql@postgresql.org
Subject: Re: [HACKERS] Bug?
Date: Thu, 19 Oct 2006 12:28:58 +0530
Message-ID: <e1a645540610182358n3468d7bv9f152a49c7e650@mail.gmail.com> (raw)
In-Reply-To: <20061018184346.GG85041@nasby.net>
References: <e1a645540610180623s2d3bf652k7fee992947a65903@mail.gmail.com>
<20061018184346.GG85041@nasby.net>
Then how do we clear the values of a serial column(is it done only by
dropping the column?)?
Regards,
M.Indira
On 10/19/06, Jim C. Nasby <jim@nasby.net> wrote:
>
> Moving to -sql.
>
> On Wed, Oct 18, 2006 at 06:53:46PM +0530, Indira Muthuswamy wrote:
> > Hai,
> >
> > I have encountered a problem with PostgreSQL.I have created a table
> > 'tab1' with a column 'a' with serial type.I entered 20 records into the
> > table.So the query
> > select max(a) from tab1;
> > returned 20.When I tried the same query after the command
> > truncate table tab1;
> > I found that the output of the first query as
> >
> > max
> > -----
> >
> > (1 row)
> > When I tried to insert a new row into the table tab1 I found that the
> > value at column a incremented to the value 21.
> > But I heard from my friends that the value of the serial column gets
> > decremented whenever we issue the 'truncate table' command (in MS SQL
> > SERVER).Is the concept same with PostgreSQL or not?Can anyone clarify me
> on
> > this?
>
> Your friends are mistaken. TRUNCATE does nothing to affect sequences.
> --
> Jim Nasby jim@nasby.net
> EnterpriseDB http://enterprisedb.com 512.569.9461 (cell)
>
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To: pgsql-sql@postgresql.org
Cc: indumuthu@gmail.com, jim@nasby.net
Subject: Re: [HACKERS] Bug?
In-Reply-To: <e1a645540610182358n3468d7bv9f152a49c7e650@mail.gmail.com>
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