Обсуждение: search_path and current_schema
Hi,
I was trying out schema settings and related functions. PostgreSQL version is 9.3
[postgres@MyCentOS 9.3]$ psql
psql (9.3.0)
Type "help" for help.
postgres=# show search_path;
search_path
----------------
"$user",public
(1 row)
postgres=# select current_schemas(true);
current_schemas
---------------------
{pg_catalog,public}
(1 row)
postgres=# set search_path=mynewschema, "$user", public;
SET
postgres=# select current_schemas(true);
current_schemas
---------------------
{pg_catalog,public}
(1 row)
postgres=# show search_path;
search_path
------------------------------
mynewschema, "$user", public
(1 row)
Jayadevan M <maymala.jayadevan@gmail.com> writes:
> I thought current_schemas and search_path will return the same set of
> schemas (except that current_schema will show pg_catalog also, if we use
> true). Shouldn't mynewschema appear in the output of select
> current_schemas(true)?
Only if it actually exists (and you have usage privilege on it). See
the description of the search_path variable: nonexistent entries are
silently ignored.
Possibly this behavior should be documented under current_schemas()
as well as under the GUC variable.
regards, tom lane
OK. When I logged in as a user who had access to the schema, the output from current_schemas and search_path were matching.
Thanks.
Thanks.
On Sun, Oct 27, 2013 at 9:55 PM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
Jayadevan M <maymala.jayadevan@gmail.com> writes:Only if it actually exists (and you have usage privilege on it). See
> I thought current_schemas and search_path will return the same set of
> schemas (except that current_schema will show pg_catalog also, if we use
> true). Shouldn't mynewschema appear in the output of select
> current_schemas(true)?
the description of the search_path variable: nonexistent entries are
silently ignored.
Possibly this behavior should be documented under current_schemas()
as well as under the GUC variable.
regards, tom lane