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From: Abbas <abbas.dba@gmail.com>
To: Jyoti Seth <jyotiseth2001@gmail.com>
Cc: Jasen Betts <jasen@xnet.co.nz>
Cc: pgsql-sql@postgresql.org
Subject: Re: backup
Date: Wed, 10 Jun 2009 11:32:51 +0530
Message-ID: <bb2cdf790906092302l162db47dm4f60d4e9bf50f9d5@mail.gmail.com> (raw)
In-Reply-To: <001b01c9e989$821d7610$86586230$@com>
References: <003b01c9e8e8$29f09860$7dd1c920$@com>
	<h0lkq8$90o$7@reversiblemaps.ath.cx>
	<001b01c9e989$821d7610$86586230$@com>

On Wed, Jun 10, 2009 at 10:38 AM, Jyoti Seth <jyotiseth2001@gmail.com>wrote:

> I tried using /copy command. It is not giving any error but also not
> creating any file.


> Thanks
> Jyoti


        Use copy command as follows if the OS is Linux,

postgres=# copy (select * from test where setid>20) to '/var/tmp/t2.dmp';
COPY 3
postgres=# \q
-bash-3.1$ cat /var/tmp/t2.dmp
1234    22      1       2009-01-08 00:00:00     dup1-2
9876    21      1       2009-01-10 00:00:00     dup2-1
1       21      1       2009-01-10 00:00:00     dup2-1

If it is Windows, use can use as,

postgres=# copy (select *from test where a<6) to 'C:/Program
Files/PostgreSQL/8.3/data/samp.sql';
COPY 9



Thanks,
Abbas
EnterpriseDB



>
> -----Original Message-----
> From: pgsql-sql-owner@postgresql.org [mailto:
> pgsql-sql-owner@postgresql.org]
> On Behalf Of Jasen Betts
> Sent: Tuesday, June 09, 2009 6:03 PM
> To: pgsql-sql@postgresql.org
> Subject: Re: [SQL] backup
>
> On 2009-06-09, Jyoti Seth <jyotiseth2001@gmail.com> wrote:
> > This is a multipart message in MIME format.
> >
> > ------=_NextPart_000_003C_01C9E916.43A8D460
> > Content-Type: text/plain;
> >       charset="us-ascii"
> > Content-Transfer-Encoding: 7bit
> >
> > Hi all,
> >
> >
> >
> > Can we take backup of specific data of a table (using where clause)?
>
> in psql:
>
> /copy (select * from table WHERE condition ) to 'FILENAME'
>
> requires postgres version >= 8.2 IIRC.
>
> you can use any query.
>
> --
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