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Re: current_schemas()

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Halley Pacheco de Oliveira <halleypo(at)yahoo(dot)com(dot)br>
Cc: pgsql-docs(at)postgresql(dot)org
Subject: Re: current_schemas()
Date: 2005-07-30 02:30:13
Message-ID: 200507300230.j6U2UDS27599@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-docs
Why not just use pg_catalog.current_schemas()?

---------------------------------------------------------------------------

Halley Pacheco de Oliveira wrote:
> I would like to know how to use current_schemas(), since SELECT current_schemas(); didn't work in
> PostgreSQL 7.4 and 8.0 psql.
> 
> Halley
> 
> PostgreSQL 8.0.3 Documentation
> Chapter 16. Server Run-time Environment
> 16.4. Run-time Configuration
> 
> The current effective value of the search path can be examined via the SQL function
> current_schemas(). This is not quite the same as examining the value of search_path, since
> current_schemas() shows how the requests appearing in search_path were resolved.
> 
> teste=# \dn
> ********* QUERY **********
> SELECT n.nspname AS "Name",
>        u.usename AS "Owner"
> FROM pg_catalog.pg_namespace n LEFT JOIN pg_catalog.pg_user u
>        ON n.nspowner=u.usesysid
> WHERE   (n.nspname NOT LIKE 'pg\\_temp\\_%' OR
>                  n.nspname = (pg_catalog.current_schemas(true))[1])
> ORDER BY 1;
> **************************
> 
>         List of schemas
>         Name        |  Owner
> --------------------+----------
>  information_schema | postgres
>  pg_catalog         | postgres
>  pg_toast           | postgres
>  public             | postgres
> (4 rows)
> 
> teste=# SELECT current_schema();
>  current_schema
> ----------------
>  public
> (1 row)
> 
> teste=# SELECT current_schemas();
> ERROR:  function current_schemas() does not exist
> HINT:  No function matches the given name and argument types. You may need to add explicit type
> casts.
> 
> 
> 
> 
> 	
> 	
> 		
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-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 359-1001
  +  If your life is a hard drive,     |  13 Roberts Road
  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073

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Next:From: Alvaro HerreraDate: 2005-07-30 03:21:15
Subject: Re: current_schemas()
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Subject: Re: PostgreSQL 8.0.3 Documentation - Chapter 23. Monitoring Database Activity

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