Thread: moving content of a table to another table

moving content of a table to another table

From

"roy simkes"

Date:

31 August 2006, 13:05:36

Hi,

I'm curious if there is a way to move content of a table to another table? I do not like to create lot's of insert commands and then delete them. I'm sure there is an easy way to do this. But I would also like to know if there can be any problem with a coloumn type of serial. While moving the tables pgsql will change the serial to the next value of the sequence or will it leave as it is, and when I reach hat number I will have a problem about duplicate entry

Thanks.

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Re: moving content of a table to another table

From

"A. Kretschmer"

Date:

31 August 2006, 14:21:38

am  Thu, dem 31.08.2006, um 13:05:10 +0000 mailte roy simkes folgendes:
>
>
> Hi,
>
> I'm curious if there is a way to move content of a table to another table? I do
> not like to create lot's of insert commands and then delete them. I'm sure
> there is an easy way to do this. But I would also like to know if there can be
> any problem with a coloumn type of serial. While moving the tables pgsql will
> change the serial to the next value of the sequence or will it leave as it is,
> and when I reach hat number I will have a problem about duplicate entry

You can do something like this:

test=# create table tab1 (id serial, name text);
NOTICE:  CREATE TABLE will create implicit sequence "tab1_id_seq" for serial column "tab1.id"
CREATE TABLE
test=*# insert into tab1 values(default, 'andreas');
INSERT 0 1
test=*# insert into tab1 values(default, 'anja');
INSERT 0 1
test=*# create table tab2(id serial, name text);
NOTICE:  CREATE TABLE will create implicit sequence "tab2_id_seq" for serial column "tab2.id"
CREATE TABLE
test=*# insert into tab2 (name) select name from tab1;
INSERT 0 2


HTH, Andreas
--
Andreas Kretschmer
Kontakt:  Heynitz: 035242/47215,   D1: 0160/7141639 (mehr: -> Header)
GnuPG-ID:   0x3FFF606C, privat 0x7F4584DA   http://wwwkeys.de.pgp.net

Re: moving content of a table to another table

From

"Phillip Smith"

Date:

31 August 2006, 23:42:25

The way I usually do it is:

COPY old_table TO ‘/tmp/old_table.sql’ ;

COPY new_table FROM ‘/tmp/old_table.sql’ ;

Not sure how this would handle your serial columns…

Cheers,

-p

-----Original Message-----
From: pgsql-novice-owner@postgresql.org [mailto:pgsql-novice-owner@postgresql.org] On Behalf Of roy simkes
Sent: Thursday, 31 August 2006 23:05
To: pgsql-novice@postgresql.org
Subject: [NOVICE] moving content of a table to another table

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