X-Original-To: pgsql-sql-postgresql.org@localhost.postgresql.org
Received: from localhost (av.hub.org [200.46.204.144])
	by postgresql.org (Postfix) with ESMTP id 6B6AF9DC81F
	for <pgsql-sql-postgresql.org@localhost.postgresql.org>;
	Tue, 14 Feb 2006 18:41:24 -0400 (AST)
Received: from postgresql.org ([200.46.204.71])
	by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024)
	with ESMTP id 87495-03
	for <pgsql-sql-postgresql.org@localhost.postgresql.org>;
	Tue, 14 Feb 2006 18:41:26 -0400 (AST)
X-Greylist: from auto-whitelisted by SQLgrey-
Received: from rwcrmhc12.comcast.net (rwcrmhc12.comcast.net [216.148.227.152])
	by postgresql.org (Postfix) with ESMTP id 4FF319DC804
	for <pgsql-sql@postgresql.org>; Tue, 14 Feb 2006 18:41:22 -0400 (AST)
Received: from [10.0.1.5] (c-24-20-199-254.hsd1.or.comcast.net[24.20.199.254])
	by comcast.net (rwcrmhc12) with SMTP
	id <20060214224124m1200qnl4pe>; Tue, 14 Feb 2006 22:41:24 +0000
Subject: Re: create table and data types
From: Ken Hill <ken@scottshill.com>
Reply-To: ken@scottshill.com
To: Maciej Piekielniak <piechcio@isb.com.pl>
Cc: pgsql-sql@postgresql.org
In-Reply-To: <1621743066.20060214230317@isb.com.pl>
References: <1827225102.20060214221218@isb.com.pl>
	<1139952634.3083.72.camel@localhost.localdomain>
	<1621743066.20060214230317@isb.com.pl>
Content-Type: multipart/alternative; boundary="=-wIx1BTKSPRiLZzoUCoY3"
Organization: Scotts Hill Associates, Inc.
Date: Tue, 14 Feb 2006 14:42:02 -0800
Message-Id: <1139956922.3083.79.camel@localhost.localdomain>
Mime-Version: 1.0
X-Mailer: Evolution 2.4.1 
X-Virus-Scanned: by amavisd-new at hub.org
X-Spam-Status: No, score=0.085 required=5 tests=[AWL=0.084,
 HTML_MESSAGE=0.001]
X-Spam-Score: 0.085
X-Spam-Level: 
X-Archive-Number: 200602/160
X-Sequence-Number: 24170


--=-wIx1BTKSPRiLZzoUCoY3
Content-Type: text/plain
Content-Transfer-Encoding: 7bit

On Tue, 2006-02-14 at 23:03 +0100, Maciej Piekielniak wrote:

> Hello Ken,
> 
> Tuesday, February 14, 2006, 10:30:34 PM, you wrote:
> KH> On Tue, 2006-02-14 at 22:12 +0100, Maciej Piekielniak wrote:
> 
> >> Hello pgsql-sql,
> >> 
> >>   Is anybody know how create field in a new table with data type accuiring from a field in other table?
> >>   For example:
> >> 
> >> create table new_table
> >> ( 
> >>  name other_table.name%TYPE
> >> ); 
> >> 
> 
> KH> Have you tried inheritance from one table to the new table?
> 
> KH> CREATE TABLE new_table (new_column)
> KH>      INHERITS (old_table)
> 
> KH> All columns in 'old_table' will be inclueded in 'new_table' plus the
> KH> column 'new_column'.
> 
> yes, but i don't need all colums, i need only the same data type for only
> some fields.
> 
> for example
> create table new table
> (
>  name other_table.name%TYPE,
>  mynewfield VARCHAR(100),
>  mynewfield2 VARCHAR(100)
> );
> 

Have you tried restructuring the table with CREATE TABLE AS...? Try
this:

CREATE TABLE new_table
     (id, mynewfield, mynewfield2)
     AS SELECT id FROM old_table);

This should create a new table ('new_table') with the data-type for
'old_table' for the id column.

--=-wIx1BTKSPRiLZzoUCoY3
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 7bit

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 TRANSITIONAL//EN">
<HTML>
<HEAD>
  <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=UTF-8">
  <META NAME="GENERATOR" CONTENT="GtkHTML/3.8.1">
</HEAD>
<BODY>
On Tue, 2006-02-14 at 23:03 +0100, Maciej Piekielniak wrote:
<BLOCKQUOTE TYPE=CITE>
<PRE>
<FONT COLOR="#000000">Hello Ken,</FONT>

<FONT COLOR="#000000">Tuesday, February 14, 2006, 10:30:34 PM, you wrote:</FONT>
<FONT COLOR="#000000">KH&gt; On Tue, 2006-02-14 at 22:12 +0100, Maciej Piekielniak wrote:</FONT>

<FONT COLOR="#000000">&gt;&gt; Hello pgsql-sql,</FONT>
<FONT COLOR="#000000">&gt;&gt; </FONT>
<FONT COLOR="#000000">&gt;&gt;   Is anybody know how create field in a new table with data type accuiring from a field in other table?</FONT>
<FONT COLOR="#000000">&gt;&gt;   For example:</FONT>
<FONT COLOR="#000000">&gt;&gt; </FONT>
<FONT COLOR="#000000">&gt;&gt; create table new_table</FONT>
<FONT COLOR="#000000">&gt;&gt; ( </FONT>
<FONT COLOR="#000000">&gt;&gt;  name other_table.name%TYPE</FONT>
<FONT COLOR="#000000">&gt;&gt; ); </FONT>
<FONT COLOR="#000000">&gt;&gt; </FONT>

<FONT COLOR="#000000">KH&gt; Have you tried inheritance from one table to the new table?</FONT>

<FONT COLOR="#000000">KH&gt; CREATE TABLE new_table (new_column)</FONT>
<FONT COLOR="#000000">KH&gt;      INHERITS (old_table)</FONT>

<FONT COLOR="#000000">KH&gt; All columns in 'old_table' will be inclueded in 'new_table' plus the</FONT>
<FONT COLOR="#000000">KH&gt; column 'new_column'.</FONT>

<FONT COLOR="#000000">yes, but i don't need all colums, i need only the same data type for only</FONT>
<FONT COLOR="#000000">some fields.</FONT>

<FONT COLOR="#000000">for example</FONT>
<FONT COLOR="#000000">create table new table</FONT>
<FONT COLOR="#000000">(</FONT>
<FONT COLOR="#000000"> name other_table.name%TYPE,</FONT>
<FONT COLOR="#000000"> mynewfield VARCHAR(100),</FONT>
<FONT COLOR="#000000"> mynewfield2 VARCHAR(100)</FONT>
<FONT COLOR="#000000">);</FONT>

</PRE>
</BLOCKQUOTE>
Have you tried restructuring the table with CREATE TABLE AS...? Try this:<BR>
<BR>
CREATE TABLE new_table<BR>
&nbsp;&nbsp;&nbsp;&nbsp; (id, mynewfield, mynewfield2)<BR>
&nbsp;&nbsp;&nbsp;&nbsp; AS SELECT id FROM old_table);<BR>
<BR>
This should create a new table ('new_table') with the data-type for 'old_table' for the id column.
</BODY>
</HTML>

--=-wIx1BTKSPRiLZzoUCoY3--