Re: Object description at Client Window - Mailing list pgsql-sql

But I have get into another problem. While I execute the following command I
could get the result as U can see below

etgsuite=# SELECT a.attname,format_type(a.atttypid, a.atttypmod),
a.attnotnull, a.atthasd
ef, a.attnum
FROM pg_class c, pg_attribute a
WHERE c.relname = 'companies'
AND a.attnum > 0 AND a.attrelid = c.oid
ORDER BY a.attnum;     attname       |         format_type         | attnotnull | atthasdef |
attnum
--------------------+-----------------------------+------------+-----------+
--------company_id         | bigint                      | t          | t         |
1name               | character varying(100)      | f          | f         |
2website            | character varying(50)       | f          | f         |
3address1           | character varying(100)      | f          | f         |
4address2           | character varying(100)      | f          | f         |
5city               | character varying(50)       | f          | f         |
6state              | character varying(50)       | t          | f         |
7postal_code        | character varying(30)       | t          | f         |
8country            | character varying(50)       | t          | f         |
9account_manager_id | bigint                      | t          | f         |
10primary_contact_id | bigint                      | t          | f         |
11company_type_id    | bigint                      | t          | f         |
12status_flag        | bigint                      | f          | f         |
13lead_source        | bigint                      | f          | f         |
14lead_date          | timestamp without time zone | f          | f         |
15industry_type      | bigint                      | f          | f         |
16rec_modifier_id    | bigint                      | t          | f         |
17rec_created_date   | timestamp without time zone | t          | f         |  18rec_modified_date  | timestamp without
timezone | f          | f         |
 
19rec_deleted_flag   | character(1)                | t          | f         |
20
(20 rows)

So I tried to create a plpgsql function as follows to return these for all
the table name. So I have created a function like this

CREATE OR REPLACE FUNCTION public.desc_table(varchar) RETURNS refcursor AS
'DECLARE

ref                         REFCURSOR ;
p_tablename                 ALIAS FOR $1;

BEGIN
OPEN ref FORSELECT a.attname, format_type(a.atttypid, a.atttypmod), a.attnotnull, a.atthasdef, a.attnumFROM pg_class c,
pg_attributeaWHERE c.relname = p_tablenameAND a.attnum > 0AND a.attrelid = c.oidORDER BY a.attnum;
 

RETURN ref;
END;' LANGUAGE 'plpgsql' VOLATILE;


While trying to execute this
select desc_table('companies');

I got the following error.
WARNING:  Error occurred while executing PL/pgSQL function desc_table
WARNING:  line 7 at open

ERROR:  Unable to identify an operator '=' for types 'name' and 'character
varying'You will have to retype this query using an explicit cast

I have write many functions of the same structure and executed with out
problems. Where I am doing wrong here.

Please shed some light.

Regards
Kumar

----- Original Message ----- 
From: "Richard Huxton" <dev@archonet.com>
To: "Kumar" <sgnerd@yahoo.com.sg>; "Jordan S. Jones" <list@racistnames.com>
Cc: <pgsql-sql@postgresql.org>
Sent: Friday, October 17, 2003 2:54 PM
Subject: Re: [SQL] Object description at Client Window


> On Friday 17 October 2003 09:44, Kumar wrote:
> > Hi ,
> >
> > Jordan, thanks for ur reply. But I am not asking that.
> >
> > I want to get all the column names of any table at the PgAdmin3 SQL
Window.
> > To make it more clear, actually i wanted to send the table name as the
> > input parameter for a function and expecting the column names, data
types,
> > etc as the output.
> >
> > Is there any command or any system table from that I could query the
column
> > names of a table (other than \d table name at the command prompt).
>
> Try what the man said. Start psql with -E and issue \d mytable and it will
> show you the SQL it uses to produce the table's details.
>
> -- 
>   Richard Huxton
>   Archonet Ltd