Re: [GENERAL] \copy combine with SELECT

[jia ding]

Thanks Martijn.

\d test
   Table "public.test"
 Column |  Type   | Modifiers
 id | integer |
 score| integer |

I tried \copy test (score) to test.txt. It works well.

But, suppose I want to select rows  with score > 20 (just an example).
Then,\copy table [ ( column_list ) ] { from | to } filename  doesn't
help much.


Have a nice weekend!

N



On 3/17/06, Martijn van Oosterhout  wrote:
> On Fri, Mar 17, 2006 at 10:45:16AM +1100, Chris wrote:
> > Doesn't look like \copy lets you specify which fields to include though.
>
> Ofcourse it does, you just need to use parenthesis. From the manpage:
>
> \copy table [ ( column_list ) ] { from | to } filename | stdin | stdout
> [ with ] [ oids ] [ delimiter [as]  'character' ] [ null [as]  'string' ]
>
> Have a nice day,
> --
> Martijn van Oosterhout  http://svana.org/kleptog/
> > Patent. n. Genius is 5% inspiration and 95% perspiration. A patent is a
> > tool for doing 5% of the work and then sitting around waiting for someone
> > else to do the other 95% so you can sue them.
>
>
> -BEGIN PGP SIGNATURE-
> Version: GnuPG v1.4.1 (GNU/Linux)
>
> iD8DBQFEGt++IB7bNG8LQkwRAvRlAJ9b3KJX82JviBnhTmexPa6nJlP2iACcD6gl
> 5jLonNJA7sZpl1jxY+LQQ1E=
> =eepY
> -END PGP SIGNATURE-
>
>
>

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Re: [GENERAL] \copy combine with SELECT

[jia ding]

yes, of couse COPYbut,=> copy test to 'test.txt';ERROR:  must be superuser to COPY to or from a fileHINT:  Anyone can COPY to stdout or from stdin. psql's \copy command also works for anyone.
On 3/16/06, Chris <[EMAIL PROTECTED]> wrote:
jia ding wrote:> Hi all,>> I tried:> select id, name  into table2   from table1;>  \copy table2 to filename.txt> in order to export 2 columns from table1 to a file.>> But, I am thinking, if there is a command can combine these two command
> together?> Maybe, something like: \copy select id,name  from table  to filename.txtClose.copy tablename field1, field2 to 'filename';
http://www.postgresql.org/docs/8.1/static/sql-copy.html--Postgresql & php tutorialshttp://www.designmagick.com/

[GENERAL] \copy combine with SELECT

[jia ding]

Hi all,I tried: select id, name  into table2   from table1; \copy table2 to filename.txt in order to export 2 columns from table1 to a file.But, I am thinking, if there is a command can combine these two command together?
Maybe, something like: \copy select id,name  from table  to filename.txt ?Nina