Exporting data from view

google pg_dump

On 6/20/06, Worky Workerson <worky.workerson@gmail.com> wrote:

I read recently about the efforts underway to COPY from a view,
however I was wondering what the current best-practices are for being
able to copy out of a view and import that data into an actual table
elsewhere. I am currently doing psql -c "SELECT ..." and the using a
bit of perl to transform that into something copyable (i.e. CSV), but
is there a way to directly export the data in an easily importable
form?

Thanks!

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+--------------------------------------------
|  Aaron Koning
|  Information Technologist
|  Prince George, BC, Canada.
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On 6/20/06, Aaron Koning <aaronkoning@gmail.com> wrote:

google pg_dump

Really? What command do you use? I've tried the following:

pg_dump -t viewname dbname

and I get the view definition, whereas I would like the data. Is
there an option to pg_dump that I'm missing?

CREATE TABLE sometable AS SELECT * FROM someview;
pg_dump -t sometable dbname
DROP TABLE sometable

Que? Si!

On 6/20/06, Worky Workerson <worky.workerson@gmail.com> wrote:

On 6/20/06, Aaron Koning <aaronkoning@gmail.com> wrote:

google pg_dump

Really? What command do you use? I've tried the following:

pg_dump -t viewname dbname

and I get the view definition, whereas I would like the data. Is
there an option to pg_dump that I'm missing?

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-- 
+--------------------------------------------
|  Aaron Koning
|  Information Technologist
|  Prince George, BC, Canada.
+--------------------------------------------
|  http://datashare.gis.unbc.ca/fist/
|  http://datashare.gis.unbc.ca/gctp-js/
+--------------------------------------------

On Tue, Jun 20, 2006 at 10:29:21AM -0700, Aaron Koning wrote:

CREATE TABLE sometable AS SELECT * FROM someview;
pg_dump -t sometable dbname
DROP TABLE sometable

Que? Si!

Eh? If you're going to create the table anyway, I'd use psql:

psql -c "COPY table TO STDOUT"

If you put "CSV" there you can get the output in CSV. Far cleaner than
pg_dump.
--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/

copyable, importable... into Excel or another postgres db?

On 6/20/06, Martijn van Oosterhout <kleptog@svana.org> wrote:

On Tue, Jun 20, 2006 at 10:29:21AM -0700, Aaron Koning wrote:

CREATE TABLE sometable AS SELECT * FROM someview;
pg_dump -t sometable dbname
DROP TABLE sometable

Que? Si!

Eh? If you're going to create the table anyway, I'd use psql:

psql -c "COPY table TO STDOUT"

If you put "CSV" there you can get the output in CSV. Far cleaner than
pg_dump.
--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/

From each according to his ability. To each according to his ability to

litigate.

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-- 
+--------------------------------------------
|  Aaron Koning
|  Information Technologist
|  Prince George, BC, Canada.
+--------------------------------------------
|  http://datashare.gis.unbc.ca/fist/
|  http://datashare.gis.unbc.ca/gctp-js/
+--------------------------------------------

On Tue, Jun 20, 2006 at 12:44:24PM -0700, Aaron Koning wrote:

copyable, importable... into Excel or another postgres db?

Ofcourse. It doesn't have the table definition ofcourse, just the data.
The CSV format was added specifically for importing into Excel and
similar programs...

--
Martijn van Oosterhout <kleptog@svana.org> http://svana.org/kleptog/

I read recently about the efforts underway to COPY from a view,
however I was wondering what the current best-practices are for being
able to copy out of a view and import that data into an actual table
elsewhere. I am currently doing psql -c "SELECT ..." and the using a
bit of perl to transform that into something copyable (i.e. CSV), but
is there a way to directly export the data in an easily importable
form?

psql -A -t -c "select * from <view>";

You can use -F to set the delimiter
-o to specify an output file name (or just redirect stdout)

etc.

Try man psql

To redirect it into a table,

"insert into table ....
select .... ;"

between databases/systems

psql -d <DB> -p <port> -A -t -c "select * from <view>"; | psql ... "copy
from stdin...;"

can work, as the psql extract can be written to generate the same format
as copy from.

Brent Wood