Re: pg_dump and schema names
I was under the impression that every command that references a relation makes use of the search path, regardless of what it is *doing*. Maybe this is different in older versions though?
I actually ran into this recently and had to remove all the xx. schema components using vi before I could run the dump to move to a different schema.
Just to be sure:
postgres=# create schema test;
CREATE SCHEMA
postgres=# set search_path to test;
SET
postgres=# create table test1(id serial);
NOTICE: CREATE TABLE will create implicit sequence "test1_id_seq" for serial column "test1.id"
CREATE TABLE
postgres=# alter table test1 owner to postgres;
ALTER TABLE
Cheers,
James Sewell
Solutions Architect
_____________________________________
On Fri, Aug 9, 2013 at 2:04 PM, Bruce Momjian <bruce@momjian.us> wrote:
pg_dump goes to great lengths not to hard-code the schema name into
commands like CREATE TABLE, instead setting the search_path before
creating the table; these commands:
CREATE SCHEMA xx;
CREATE TABLE xx.test(x int);
generates this output:
SET search_path = xx, pg_catalog;
CREATE TABLE test (
x integer
);
If you dump a schema and want to reload it into another schema, you
should only need to update that one search_path line. However, later in
the dump file, we hardcode the schema name for setting the object owner:
ALTER TABLE xx.test OWNER TO postgres;
Could we use search_path here to avoid the schema designation? I am not
sure this possible because while CREATE defaults to the first existing
schema in the search_path, I am not sure ALTER has the same behavior
because you are not _creating_ something with ALTER.
--
Bruce Momjian <bruce@momjian.us> http://momjian.us
EnterpriseDB http://enterprisedb.com
+ It's impossible for everything to be true. +
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