Re: dictionary?

From: Ray Stell <stellr(at)cns(dot)vt(dot)edu>
To: "Tomeh, Husam" <htomeh(at)firstam(dot)com>
Cc: pgsql-novice(at)postgresql(dot)org
Subject: Re: dictionary?
Date: 2006-09-22 19:49:29
Message-ID: 20060922194929.GE11163@cns.vt.edu
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cool:

template1=# Select tablename from pg_tables where tablename like '%features%';
tablename
--------------
sql_features
(1 row)

template1=# \d sql_features
Did not find any relation named "sql_features".

template1=# \dT+sql_features
List of data types
Schema | Name | Internal name | Size | Description
------------+-----------------------------+------------------+------+-------------------------------------------------------------------
pg_catalog | abstime | abstime | 4 | absolute, limited-range date and time (Unix system time)
pg_catalog | aclitem | aclitem | 12 | access control list
....

On Fri, Sep 22, 2006 at 12:40:35PM -0700, Tomeh, Husam wrote:
>
> You can query pg_tables, pg_indexes, etc.
>
> Select tablename from pg_tables where tablename like 'snapshot%' ;
>
> These views are based on the pg_class system table.
>
> To describe a table, just do \d tablename.
>
> --
> Husam
> http://firstdba.googlepages.com
>
>
> -----Original Message-----
> From: pgsql-novice-owner(at)postgresql(dot)org
> [mailto:pgsql-novice-owner(at)postgresql(dot)org] On Behalf Of Ray Stell
> Sent: Friday, September 22, 2006 12:16 PM
> To: pgsql-novice(at)postgresql(dot)org
> Subject: [NOVICE] dictionary?
>
> How do you accomplish this in pg?
>
> 1. Is there a table like the Oracle dictionary?
> 2. Is there a way to describe a table?
>
> I use these all the time in oracle. When I can't remember where
> some management metric is located in the system, I sort of grep for
> it based on a keyword. For example, if I need to find out about some
> snapshot (copy of a table from another db), I do this:
>
>
> select table_name from dictionary where table_name like '%SNAPSHOT%';
>
> TABLE_NAME
> ------------------------------
> ALL_REGISTERED_SNAPSHOTS
> ALL_SNAPSHOTS
> ...
>
>
> SQL> describe ALL_SNAPSHOTS
> Name Null? Type
> ----------------------------------------- --------
> ----------------------------
> OWNER NOT NULL VARCHAR2(30)
> NAME NOT NULL VARCHAR2(30)
> TABLE_NAME NOT NULL VARCHAR2(30)
> ...
>
>
> select name from ALL_SNAPSHOTS;
> ...
>
> TIA.
>
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