Re: backup

On Wed, Jun 10, 2009 at 10:38 AM, Jyoti Seth <jyotiseth2001(at)gmail(dot)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(at)postgresql(dot)org [mailto:
> pgsql-sql-owner(at)postgresql(dot)org]
> On Behalf Of Jasen Betts
> Sent: Tuesday, June 09, 2009 6:03 PM
> To: pgsql-sql(at)postgresql(dot)org
> Subject: Re: [SQL] backup
>
> On 2009-06-09, Jyoti Seth <jyotiseth2001(at)gmail(dot)com> wrote:
> > This is a multipart message in MIME format.
> >
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> >
> > 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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