From: Jim C. Nasby <jim@nasby.net>
To: Indira Muthuswamy <indumuthu@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: [HACKERS] Bug?
Date: Wed, 18 Oct 2006 13:43:47 -0500
Message-ID: <20061018184346.GG85041@nasby.net> (raw)
In-Reply-To: <e1a645540610180623s2d3bf652k7fee992947a65903@mail.gmail.com>
References: <e1a645540610180623s2d3bf652k7fee992947a65903@mail.gmail.com>
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: jim@nasby.net, indumuthu@gmail.com
Subject: Re: [HACKERS] Bug?
In-Reply-To: <20061018184346.GG85041@nasby.net>
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